mirror of
https://github.com/avast/ioc
synced 2024-06-28 17:51:17 +00:00
747 lines
28 KiB
Plaintext
747 lines
28 KiB
Plaintext
rule cobaltstrike_raw_payload_dns_stager_x86
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop
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$h01 = { FC E8 89 00 00 00 60 89 E5 31 D2 64 8B 52 30 8B 52 0C 8B 52 14 8B 72 28 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x00a3 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x00bd | 0x0726774c | kernel32.dll_LoadLibraryA
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0x012f | 0xc99cc96a | dnsapi.dll_DnsQuery_A
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0x0198 | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x01a4 | 0xe035f044 | kernel32.dll_Sleep
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0x01e4 | 0xcc8e00f4 | kernel32.dll_lstrlenA
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*/
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uint32(@h01+0x00a3) == 0xe553a458 and
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uint32(@h01+0x00bd) == 0x0726774c and
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uint32(@h01+0x012f) == 0xc99cc96a and
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uint32(@h01+0x0198) == 0x56a2b5f0 and
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uint32(@h01+0x01a4) == 0xe035f044 and
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uint32(@h01+0x01e4) == 0xcc8e00f4
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}
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rule cobaltstrike_raw_payload_smb_stager_x86
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop
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$h01 = { FC E8 89 00 00 00 60 89 E5 31 D2 64 8B 52 30 8B 52 0C 8B 52 14 8B 72 28 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x00a1 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x00c4 | 0xd4df7045 | kernel32.dll_CreateNamedPipeA
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0x00d2 | 0xe27d6f28 | kernel32.dll_ConnectNamedPipe
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0x00f8 | 0xbb5f9ead | kernel32.dll_ReadFile
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0x010d | 0xbb5f9ead | kernel32.dll_ReadFile
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0x0131 | 0xfcddfac0 | kernel32.dll_DisconnectNamedPipe
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0x0139 | 0x528796c6 | kernel32.dll_CloseHandle
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0x014b | 0x56a2b5f0 | kernel32.dll_ExitProcess
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*/
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uint32(@h01+0x00a1) == 0xe553a458 and
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uint32(@h01+0x00c4) == 0xd4df7045 and
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uint32(@h01+0x00d2) == 0xe27d6f28 and
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uint32(@h01+0x00f8) == 0xbb5f9ead and
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uint32(@h01+0x010d) == 0xbb5f9ead and
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uint32(@h01+0x0131) == 0xfcddfac0 and
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uint32(@h01+0x0139) == 0x528796c6 and
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uint32(@h01+0x014b) == 0x56a2b5f0
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}
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rule cobaltstrike_raw_payload_tcp_bind_x86
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop
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$h01 = { FC E8 89 00 00 00 60 89 E5 31 D2 64 8B 52 30 8B 52 0C 8B 52 14 8B 72 28 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x009c | 0x0726774c | kernel32.dll_LoadLibraryA
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0x00ac | 0x006b8029 | ws2_32.dll_WSAStartup
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0x00bb | 0xe0df0fea | ws2_32.dll_WSASocketA
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0x00d5 | 0x6737dbc2 | ws2_32.dll_bind
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0x00de | 0xff38e9b7 | ws2_32.dll_listen
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0x00e8 | 0xe13bec74 | ws2_32.dll_accept
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0x00f1 | 0x614d6e75 | ws2_32.dll_closesocket
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0x00fa | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x0107 | 0x5fc8d902 | ws2_32.dll_recv
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0x011a | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x0128 | 0x5fc8d902 | ws2_32.dll_recv
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0x013d | 0x614d6e75 | ws2_32.dll_closesocket
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*/
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uint32(@h01+0x009c) == 0x0726774c and
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uint32(@h01+0x00ac) == 0x006b8029 and
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uint32(@h01+0x00bb) == 0xe0df0fea and
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uint32(@h01+0x00d5) == 0x6737dbc2 and
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uint32(@h01+0x00de) == 0xff38e9b7 and
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uint32(@h01+0x00e8) == 0xe13bec74 and
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uint32(@h01+0x00f1) == 0x614d6e75 and
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uint32(@h01+0x00fa) == 0x56a2b5f0 and
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uint32(@h01+0x0107) == 0x5fc8d902 and
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uint32(@h01+0x011a) == 0xe553a458 and
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uint32(@h01+0x0128) == 0x5fc8d902 and
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uint32(@h01+0x013d) == 0x614d6e75
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}
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rule cobaltstrike_raw_payload_tcp_bind_x64
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x64 default eop
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$h01 = { FC 48 83 E4 F0 E8 C8 00 00 00 41 51 41 50 52 51 56 48 31 D2 65 48 8B 52 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x0100 | 0x0726774c | kernel32.dll_LoadLibraryA
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0x0111 | 0x006b8029 | ws2_32.dll_WSAStartup
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0x012d | 0xe0df0fea | ws2_32.dll_WSASocketA
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0x0142 | 0x6737dbc2 | ws2_32.dll_bind
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0x0150 | 0xff38e9b7 | ws2_32.dll_listen
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0x0161 | 0xe13bec74 | ws2_32.dll_accept
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0x016f | 0x614d6e75 | ws2_32.dll_closesocket
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0x0198 | 0x5fc8d902 | ws2_32.dll_recv
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0x01b8 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x01d2 | 0x5fc8d902 | ws2_32.dll_recv
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0x01ee | 0x614d6e75 | ws2_32.dll_closesocket
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*/
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uint32(@h01+0x0100) == 0x0726774c and
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uint32(@h01+0x0111) == 0x006b8029 and
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uint32(@h01+0x012d) == 0xe0df0fea and
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uint32(@h01+0x0142) == 0x6737dbc2 and
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uint32(@h01+0x0150) == 0xff38e9b7 and
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uint32(@h01+0x0161) == 0xe13bec74 and
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uint32(@h01+0x016f) == 0x614d6e75 and
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uint32(@h01+0x0198) == 0x5fc8d902 and
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uint32(@h01+0x01b8) == 0xe553a458 and
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uint32(@h01+0x01d2) == 0x5fc8d902 and
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uint32(@h01+0x01ee) == 0x614d6e75
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}
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rule cobaltstrike_raw_payload_tcp_reverse_x86
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop
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$h01 = { FC E8 89 00 00 00 60 89 E5 31 D2 64 8B 52 30 8B 52 0C 8B 52 14 8B 72 28 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x009c | 0x0726774c | kernel32.dll_LoadLibraryA
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0x00ac | 0x006b8029 | ws2_32.dll_WSAStartup
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0x00bb | 0xe0df0fea | ws2_32.dll_WSASocketA
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0x00d5 | 0x6174a599 | ws2_32.dll_connect
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0x00e5 | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x00f2 | 0x5fc8d902 | ws2_32.dll_recv
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0x0105 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x0113 | 0x5fc8d902 | ws2_32.dll_recv
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*/
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uint32(@h01+0x009c) == 0x0726774c and
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uint32(@h01+0x00ac) == 0x006b8029 and
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uint32(@h01+0x00bb) == 0xe0df0fea and
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uint32(@h01+0x00d5) == 0x6174a599 and
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uint32(@h01+0x00e5) == 0x56a2b5f0 and
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uint32(@h01+0x00f2) == 0x5fc8d902 and
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uint32(@h01+0x0105) == 0xe553a458 and
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uint32(@h01+0x0113) == 0x5fc8d902
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}
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rule cobaltstrike_raw_payload_tcp_reverse_x64
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x64 default eop
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$h01 = { FC 48 83 E4 F0 E8 C8 00 00 00 41 51 41 50 52 51 56 48 31 D2 65 48 8B 52 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x0100 | 0x0726774c | kernel32.dll_LoadLibraryA
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0x0111 | 0x006b8029 | ws2_32.dll_WSAStartup
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0x012d | 0xe0df0fea | ws2_32.dll_WSASocketA
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0x0142 | 0x6174a599 | ws2_32.dll_connect
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0x016b | 0x5fc8d902 | ws2_32.dll_recv
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0x018b | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x01a5 | 0x5fc8d902 | ws2_32.dll_recv
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0x01c1 | 0x614d6e75 | ws2_32.dll_closesocket
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*/
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uint32(@h01+0x0100) == 0x0726774c and
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uint32(@h01+0x0111) == 0x006b8029 and
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uint32(@h01+0x012d) == 0xe0df0fea and
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uint32(@h01+0x0142) == 0x6174a599 and
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uint32(@h01+0x016b) == 0x5fc8d902 and
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uint32(@h01+0x018b) == 0xe553a458 and
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uint32(@h01+0x01a5) == 0x5fc8d902 and
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uint32(@h01+0x01c1) == 0x614d6e75
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}
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rule cobaltstrike_raw_payload_http_stager_x86
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop
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$h01 = { FC E8 89 00 00 00 60 89 E5 31 D2 64 8B 52 30 8B 52 0C 8B 52 14 8B 72 28 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x009c | 0x0726774c | kernel32.dll_LoadLibraryA
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0x00aa | 0xa779563a | wininet.dll_InternetOpenA
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0x00c6 | 0xc69f8957 | wininet.dll_InternetConnectA
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0x00de | 0x3b2e55eb | wininet.dll_HttpOpenRequestA
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0x00f2 | 0x7b18062d | wininet.dll_HttpSendRequestA
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0x010b | 0x5de2c5aa | kernel32.dll_GetLastError
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0x0114 | 0x315e2145 | user32.dll_GetDesktopWindow
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0x0123 | 0x0be057b7 | wininet.dll_InternetErrorDlg
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0x02c4 | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x02d8 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x02f3 | 0xe2899612 | wininet.dll_InternetReadFile
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*/
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uint32(@h01+0x009c) == 0x0726774c and
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uint32(@h01+0x00aa) == 0xa779563a and
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uint32(@h01+0x00c6) == 0xc69f8957 and
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uint32(@h01+0x00de) == 0x3b2e55eb and
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uint32(@h01+0x00f2) == 0x7b18062d and
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uint32(@h01+0x010b) == 0x5de2c5aa and
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uint32(@h01+0x0114) == 0x315e2145 and
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uint32(@h01+0x0123) == 0x0be057b7 and
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uint32(@h01+0x02c4) == 0x56a2b5f0 and
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uint32(@h01+0x02d8) == 0xe553a458 and
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uint32(@h01+0x02f3) == 0xe2899612
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}
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rule cobaltstrike_raw_payload_http_stager_x64
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x64 default eop
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$h01 = { FC 48 83 E4 F0 E8 C8 00 00 00 41 51 41 50 52 51 56 48 31 D2 65 48 8B 52 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x00e9 | 0x0726774c | kernel32.dll_LoadLibraryA
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0x0101 | 0xa779563a | wininet.dll_InternetOpenA
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0x0120 | 0xc69f8957 | wininet.dll_InternetConnectA
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0x013f | 0x3b2e55eb | wininet.dll_HttpOpenRequestA
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0x0163 | 0x7b18062d | wininet.dll_HttpSendRequestA
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0x0308 | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x0324 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x0342 | 0xe2899612 | wininet.dll_InternetReadFile
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*/
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uint32(@h01+0x00e9) == 0x0726774c and
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uint32(@h01+0x0101) == 0xa779563a and
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uint32(@h01+0x0120) == 0xc69f8957 and
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uint32(@h01+0x013f) == 0x3b2e55eb and
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uint32(@h01+0x0163) == 0x7b18062d and
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uint32(@h01+0x0308) == 0x56a2b5f0 and
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uint32(@h01+0x0324) == 0xe553a458 and
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uint32(@h01+0x0342) == 0xe2899612
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}
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rule cobaltstrike_raw_payload_https_stager_x86
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop
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$h01 = { FC E8 89 00 00 00 60 89 E5 31 D2 64 8B 52 30 8B 52 0C 8B 52 14 8B 72 28 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x009c | 0x0726774c | kernel32.dll_LoadLibraryA
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0x00af | 0xa779563a | wininet.dll_InternetOpenA
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0x00cb | 0xc69f8957 | wininet.dll_InternetConnectA
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0x00e7 | 0x3b2e55eb | wininet.dll_HttpOpenRequestA
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0x0100 | 0x869e4675 | wininet.dll_InternetSetOptionA
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0x0110 | 0x7b18062d | wininet.dll_HttpSendRequestA
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0x0129 | 0x5de2c5aa | kernel32.dll_GetLastError
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0x0132 | 0x315e2145 | user32.dll_GetDesktopWindow
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0x0141 | 0x0be057b7 | wininet.dll_InternetErrorDlg
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0x02e9 | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x02fd | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x0318 | 0xe2899612 | wininet.dll_InternetReadFile
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*/
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uint32(@h01+0x009c) == 0x0726774c and
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uint32(@h01+0x00af) == 0xa779563a and
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uint32(@h01+0x00cb) == 0xc69f8957 and
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uint32(@h01+0x00e7) == 0x3b2e55eb and
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uint32(@h01+0x0100) == 0x869e4675 and
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uint32(@h01+0x0110) == 0x7b18062d and
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uint32(@h01+0x0129) == 0x5de2c5aa and
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uint32(@h01+0x0132) == 0x315e2145 and
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uint32(@h01+0x0141) == 0x0be057b7 and
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uint32(@h01+0x02e9) == 0x56a2b5f0 and
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uint32(@h01+0x02fd) == 0xe553a458 and
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uint32(@h01+0x0318) == 0xe2899612
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}
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rule cobaltstrike_raw_payload_https_stager_x64
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x64 default eop
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$h01 = { FC 48 83 E4 F0 E8 C8 00 00 00 41 51 41 50 52 51 56 48 31 D2 65 48 8B 52 }
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condition:
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/*
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Payload API list:
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Offset | Hash value | API name
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0x00e9 | 0x0726774c | kernel32.dll_LoadLibraryA
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0x0101 | 0xa779563a | wininet.dll_InternetOpenA
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0x0123 | 0xc69f8957 | wininet.dll_InternetConnectA
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0x0142 | 0x3b2e55eb | wininet.dll_HttpOpenRequestA
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0x016c | 0x869e4675 | wininet.dll_InternetSetOptionA
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0x0186 | 0x7b18062d | wininet.dll_HttpSendRequestA
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0x032b | 0x56a2b5f0 | kernel32.dll_ExitProcess
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0x0347 | 0xe553a458 | kernel32.dll_VirtualAlloc
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0x0365 | 0xe2899612 | wininet.dll_InternetReadFile
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*/
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uint32(@h01+0x00e9) == 0x0726774c and
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uint32(@h01+0x0101) == 0xa779563a and
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uint32(@h01+0x0123) == 0xc69f8957 and
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uint32(@h01+0x0142) == 0x3b2e55eb and
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uint32(@h01+0x016c) == 0x869e4675 and
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uint32(@h01+0x0186) == 0x7b18062d and
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uint32(@h01+0x032b) == 0x56a2b5f0 and
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uint32(@h01+0x0347) == 0xe553a458 and
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uint32(@h01+0x0365) == 0xe2899612
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}
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rule cobaltstrike_raw_payload_dns_stager_x86_utf16
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{
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meta:
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author = "Avast Threat Intel Team"
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source = "https://github.com/avast/ioc"
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strings:
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// x86 default eop utf-16
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$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
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condition:
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uint32(@h01+0x0149) == 0xe5005300 and
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uint32(@h01+0x017d) == 0x07002600 and
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uint32(@h01+0x0261) == 0xc9009c00 and
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uint32(@h01+0x0333) == 0x5600a200 and
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uint32(@h01+0x034b) == 0xe0003500 and
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uint32(@h01+0x03cb) == 0xcc008e00
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}
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rule cobaltstrike_raw_payload_smb_stager_x86_utf16
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{
|
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meta:
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|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
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strings:
|
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// x86 default eop utf-16
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$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
|
|
condition:
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uint32(@h01+0x0145) == 0xe5005300 and
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uint32(@h01+0x018b) == 0xd400df00 and
|
|
uint32(@h01+0x01a7) == 0xe2007d00 and
|
|
uint32(@h01+0x01f3) == 0xbb005f00 and
|
|
uint32(@h01+0x021d) == 0xbb005f00 and
|
|
uint32(@h01+0x0265) == 0xfc00dd00 and
|
|
uint32(@h01+0x0275) == 0x52008700 and
|
|
uint32(@h01+0x0299) == 0x5600a200
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_tcp_bind_x86_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 default eop utf-16
|
|
$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
|
|
condition:
|
|
uint32(@h01+0x013b) == 0x07002600 and
|
|
uint32(@h01+0x015b) == 0x00006b00 and
|
|
uint32(@h01+0x0179) == 0xe000df00 and
|
|
uint32(@h01+0x01ad) == 0x67003700 and
|
|
uint32(@h01+0x01bf) == 0xff003800 and
|
|
uint32(@h01+0x01d3) == 0xe1003b00 and
|
|
uint32(@h01+0x01e5) == 0x61004d00 and
|
|
uint32(@h01+0x01f7) == 0x5600a200 and
|
|
uint32(@h01+0x0211) == 0x5f00c800 and
|
|
uint32(@h01+0x0237) == 0xe5005300 and
|
|
uint32(@h01+0x0253) == 0x5f00c800 and
|
|
uint32(@h01+0x027d) == 0x61004d00
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_tcp_bind_x64_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x64 default eop utf16
|
|
$h01 = { FC 00 48 00 83 00 E4 00 F0 00 E8 00 C8 00 00 00 00 00 00 00 41 00 51 00 41 00 50 00 52 00 51 00 56 00 48 00 31 00 D2 00 65 00 48 00 8B 00 52 }
|
|
condition:
|
|
uint32(@h01+0x0203) == 0x07002600 and
|
|
uint32(@h01+0x0225) == 0x00006b00 and
|
|
uint32(@h01+0x025d) == 0xe000df00 and
|
|
uint32(@h01+0x0287) == 0x67003700 and
|
|
uint32(@h01+0x02a3) == 0xff003800 and
|
|
uint32(@h01+0x02c5) == 0xe1003b00 and
|
|
uint32(@h01+0x02e1) == 0x61004d00 and
|
|
uint32(@h01+0x0333) == 0x5f00c800 and
|
|
uint32(@h01+0x0373) == 0xe5005300 and
|
|
uint32(@h01+0x03a7) == 0x5f00c800 and
|
|
uint32(@h01+0x03df) == 0x61004d00
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_tcp_reverse_x86_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 default eop utf-16
|
|
$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
|
|
condition:
|
|
uint32(@h01+0x013b) == 0x07002600 and
|
|
uint32(@h01+0x015b) == 0x00006b00 and
|
|
uint32(@h01+0x0179) == 0xe000df00 and
|
|
uint32(@h01+0x01ad) == 0x61007400 and
|
|
uint32(@h01+0x01cd) == 0x5600a200 and
|
|
uint32(@h01+0x01e7) == 0x5f00c800 and
|
|
uint32(@h01+0x020d) == 0xe5005300 and
|
|
uint32(@h01+0x0229) == 0x5f00c800
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_tcp_reverse_x64_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x64 default eop utf16
|
|
$h01 = { FC 00 48 00 83 00 E4 00 F0 00 E8 00 C8 00 00 00 00 00 00 00 41 00 51 00 41 00 50 00 52 00 51 00 56 00 48 00 31 00 D2 00 65 00 48 00 8B 00 52 }
|
|
condition:
|
|
uint32(@h01+0x0203) == 0x07002600 and
|
|
uint32(@h01+0x0225) == 0x00006b00 and
|
|
uint32(@h01+0x025d) == 0xe000df00 and
|
|
uint32(@h01+0x0287) == 0x61007400 and
|
|
uint32(@h01+0x02d9) == 0x5f00c800 and
|
|
uint32(@h01+0x0319) == 0xe5005300 and
|
|
uint32(@h01+0x034d) == 0x5f00c800 and
|
|
uint32(@h01+0x0385) == 0x61004d00
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_http_stager_x86_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 default eop utf-16
|
|
$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
|
|
condition:
|
|
uint32(@h01+0x013b) == 0x07002600 and
|
|
uint32(@h01+0x0157) == 0xa7007900 and
|
|
uint32(@h01+0x018f) == 0xc6009f00 and
|
|
uint32(@h01+0x01bf) == 0x3b002e00 and
|
|
uint32(@h01+0x01e7) == 0x7b001800 and
|
|
uint32(@h01+0x0219) == 0x5d00e200 and
|
|
uint32(@h01+0x022b) == 0x31005e00 and
|
|
uint32(@h01+0x0249) == 0x0b00e000 and
|
|
uint32(@h01+0x058b) == 0x5600a200 and
|
|
uint32(@h01+0x05b3) == 0xe5005300 and
|
|
uint32(@h01+0x05e9) == 0xe2008900
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_http_stager_x64_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x64 default eop utf16
|
|
$h01 = { FC 00 48 00 83 00 E4 00 F0 00 E8 00 C8 00 00 00 00 00 00 00 41 00 51 00 41 00 50 00 52 00 51 00 56 00 48 00 31 00 D2 00 65 00 48 00 8B 00 52 }
|
|
condition:
|
|
uint32(@h01+0x01d5) == 0x07002600 and
|
|
uint32(@h01+0x0205) == 0xa7007900 and
|
|
uint32(@h01+0x0243) == 0xc6009f00 and
|
|
uint32(@h01+0x0281) == 0x3b002e00 and
|
|
uint32(@h01+0x02c9) == 0x7b001800 and
|
|
uint32(@h01+0x0613) == 0x5600a200 and
|
|
uint32(@h01+0x064b) == 0xe5005300 and
|
|
uint32(@h01+0x0687) == 0xe2008900
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_https_stager_x86_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 default eop utf-16
|
|
$h01 = { FC 00 E8 00 89 00 00 00 00 00 00 00 60 00 89 00 E5 00 31 00 D2 00 64 00 8B 00 52 00 30 00 8B 00 52 00 0C 00 8B 00 52 00 14 00 8B 00 72 00 28 }
|
|
condition:
|
|
uint32(@h01+0x013b) == 0x07002600 and
|
|
uint32(@h01+0x0161) == 0xa7007900 and
|
|
uint32(@h01+0x0199) == 0xc6009f00 and
|
|
uint32(@h01+0x01d1) == 0x3b002e00 and
|
|
uint32(@h01+0x0203) == 0x86009e00 and
|
|
uint32(@h01+0x0223) == 0x7b001800 and
|
|
uint32(@h01+0x0255) == 0x5d00e200 and
|
|
uint32(@h01+0x0267) == 0x31005e00 and
|
|
uint32(@h01+0x0285) == 0x0b00e000 and
|
|
uint32(@h01+0x05d5) == 0x5600a200 and
|
|
uint32(@h01+0x05fd) == 0xe5005300 and
|
|
uint32(@h01+0x0633) == 0xe2008900
|
|
}
|
|
|
|
rule cobaltstrike_raw_payload_https_stager_x64_utf16
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x64 default eop utf-16
|
|
$h01 = { FC 00 48 00 83 00 E4 00 F0 00 E8 00 C8 00 00 00 00 00 00 00 41 00 51 00 41 00 50 00 52 00 51 00 56 00 48 00 31 00 D2 00 65 00 48 00 8B 00 52 }
|
|
condition:
|
|
uint32(@h01+0x01d5) == 0x07002600 and
|
|
uint32(@h01+0x0205) == 0xa7007900 and
|
|
uint32(@h01+0x0249) == 0xc6009f00 and
|
|
uint32(@h01+0x0287) == 0x3b002e00 and
|
|
uint32(@h01+0x02db) == 0x86009e00 and
|
|
uint32(@h01+0x030f) == 0x7b001800 and
|
|
uint32(@h01+0x0659) == 0x5600a200 and
|
|
uint32(@h01+0x0691) == 0xe5005300 and
|
|
uint32(@h01+0x06cd) == 0xe2008900
|
|
}
|
|
|
|
rule cobaltstrike_payload_encoded
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 array
|
|
$s01 = "0xfc, 0xe8, 0x89, 0x00, 0x00, 0x00, 0x60, 0x89, 0xe5, 0x31, 0xd2, 0x64, 0x8b, 0x52, 0x30, 0x8b" ascii wide nocase
|
|
$s02 = "0xfc,0xe8,0x89,0x00,0x00,0x00,0x60,0x89,0xe5,0x31,0xd2,0x64,0x8b,0x52,0x30,0x8b" ascii wide nocase
|
|
// x64 array
|
|
$s03 = "0xfc, 0x48, 0x83, 0xe4, 0xf0, 0xe8, 0xc8, 0x00, 0x00, 0x00, 0x41, 0x51, 0x41, 0x50, 0x52, 0x51" ascii wide nocase
|
|
$s04 = "0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xc8,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,0x51" ascii wide nocase
|
|
// x86 hex
|
|
$s05 = "fce8890000006089e531d2648b52308b" ascii wide nocase
|
|
$s06 = "fc e8 89 00 00 00 60 89 e5 31 d2 64 8b 52 30 8b" ascii wide nocase
|
|
// x64 hex
|
|
$s07 = "fc4883e4f0e8c8000000415141505251" ascii wide nocase
|
|
$s08 = "fc 48 83 e4 f0 e8 c8 00 00 00 41 51 41 50 52 51" ascii wide nocase
|
|
// x86 base64
|
|
$s09 = "/OiJAAAAYInlMdJki1Iwi1IMi1IUi3IoD7dKJjH/McCsPGF8Aiwgwc8NAcfi8FJX" ascii wide
|
|
// x64 base64
|
|
$s10 = "/EiD5PDoyAAAAEFRQVBSUVZIMdJlSItSYEiLUhhIi1IgSItyUEgPt0pKTTHJSDHA" ascii wide
|
|
// x86 base64 + xor 0x23
|
|
$s11 = "38uqIyMjQ6rGEvFHqHETqHEvqHE3qFELLJRpBRLcEuOPH0JfIQ8D4uwuIuTB03F0" ascii wide
|
|
// x64 base64 + xor 0x23
|
|
$s12 = "32ugx9PL6yMjI2JyYnNxcnVrEvFGa6hxQ2uocTtrqHEDa6hRc2sslGlpbhLqaxLj" ascii wide
|
|
// x86 base64 utf16
|
|
$s13 = "/ADoAIkAAAAAAAAAYACJAOUAMQDSAGQAiwBSADAAiwBSAAwAiwBSABQAiwByACg" ascii wide
|
|
// x64 base64 utf16
|
|
$s14 = "/ABIAIMA5ADwAOgAyAAAAAAAAABBAFEAQQBQAFIAUQBWAEgAMQDSAGUASACLAFI" ascii wide
|
|
// x86 base64 + xor 0x23 utf16
|
|
$s15 = "3yPLI6ojIyMjIyMjQyOqI8YjEiPxI0cjqCNxIxMjqCNxIy8jqCNxIzcjqCNRIwsj" ascii wide
|
|
// x64 base64 + xor 0x23 utf16
|
|
$s16 = "3yNrI6AjxyPTI8sj6yMjIyMjIyNiI3IjYiNzI3EjciN1I2sjEiPxI0YjayOoI3Ej" ascii wide
|
|
// x86 vba
|
|
$s17 = "Array(-4,-24,-119,0,0,0,96,-119,-27,49,-46,100,-117,82,48,-117" ascii wide
|
|
$s18 = "Array(-4, -24, -119, 0, 0, 0, 96, -119, -27, 49, -46, 100, -117, 82, 48, -117" ascii wide
|
|
// x64 vba
|
|
$s19 = "Array(-4,72,-125,-28,-16,-24,-56,0,0,0,65,81,65,80,82,81" ascii wide
|
|
$s20 = "Array(-4, 72, -125, -28, -16, -24, -56, 0, 0, 0, 65, 81, 65, 80, 82, 81" ascii wide
|
|
// x86 vbs
|
|
$s21 = "Chr(-4)&Chr(-24)&Chr(-119)&Chr(0)&Chr(0)&Chr(0)&Chr(96)&Chr(-119)&Chr(-27)&\"1\"&Chr(-46)&\"d\"&Chr(-117)&\"R0\"&Chr(-117)" ascii wide
|
|
// x64 vbs
|
|
$s22 = "Chr(-4)&\"H\"&Chr(-125)&Chr(-28)&Chr(-16)&Chr(-24)&Chr(-56)&Chr(0)&Chr(0)&Chr(0)&\"AQAPRQVH" ascii wide
|
|
// x86 veil
|
|
$s23 = "\\xfc\\xe8\\x89\\x00\\x00\\x00\\x60\\x89\\xe5\\x31\\xd2\\x64\\x8b\\x52\\x30\\x8b" ascii wide nocase
|
|
// x64 veil
|
|
$s24 = "\\xfc\\x48\\x83\\xe4\\xf0\\xe8\\xc8\\x00\\x00\\x00\\x41\\x51\\x41\\x50\\x52\\x51" ascii wide nocase
|
|
|
|
condition:
|
|
any of them
|
|
}
|
|
|
|
rule cobaltstrike_strike_payload_xored
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
$h01 = { 10 ?? 00 00 ?? ?? ?? 00 ?? ?? ?? ?? 61 61 61 61 }
|
|
condition:
|
|
//x86 payload
|
|
uint32be(@h01+8) ^ uint32be(@h01+16) == 0xFCE88900 or
|
|
//x64 payload
|
|
uint32be(@h01+8) ^ uint32be(@h01+16) == 0xFC4883E4 or
|
|
//x86 beacon
|
|
uint32be(@h01+8) ^ uint32be(@h01+16) == 0x4D5AE800 or
|
|
//x64 beacon
|
|
uint32be(@h01+8) ^ uint32be(@h01+16) == 0x4D5A4152 or
|
|
//NOP slide
|
|
uint32be(@h01+8) ^ uint32be(@h01+16) == 0x90909090
|
|
}
|
|
|
|
rule cobaltstrike_beacon_x86
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 default MZ header
|
|
$h01 = { 4D 5A E8 00 00 00 00 5B 89 DF 52 45 55 89 E5 81 C3 ?? ?? ?? ?? FF D3 68 }
|
|
// decoded config blob
|
|
$h11 = { 00 01 00 01 00 02 ?? ?? 00 02 00 01 00 02 ?? ?? 00 }
|
|
// xored config blob v3
|
|
$h12 = { 69 68 69 68 69 6B ?? ?? 69 6B 69 68 69 6B ?? ?? 69 }
|
|
// xored config blob v4
|
|
$h13 = { 2E 2F 2E 2F 2E 2C ?? ?? 2E 2C 2E 2F 2E 2C ?? ?? 2E }
|
|
condition:
|
|
$h01 and
|
|
any of ($h1*)
|
|
}
|
|
|
|
rule cobaltstrike_beacon_x64
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x64 default MZ header
|
|
$h01 = { 4D 5A 41 52 55 48 89 E5 48 81 EC 20 00 00 00 48 8D 1D EA FF FF FF 48 89 }
|
|
// decoded config blob
|
|
$h11 = { 00 01 00 01 00 02 ?? ?? 00 02 00 01 00 02 ?? ?? 00 }
|
|
// xored config blob v3
|
|
$h12 = { 69 68 69 68 69 6B ?? ?? 69 6B 69 68 69 6B ?? ?? 69 }
|
|
// xored config blob v4
|
|
$h13 = { 2E 2F 2E 2F 2E 2C ?? ?? 2E 2C 2E 2F 2E 2C ?? ?? 2E }
|
|
condition:
|
|
$h01 and
|
|
any of ($h1*)
|
|
}
|
|
|
|
rule cobaltstrike_beacon_encoded
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 array
|
|
$s01 = "0x4d, 0x5a, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x5b, 0x89, 0xdf, 0x52, 0x45, 0x55, 0x89, 0xe5, 0x81" ascii wide nocase
|
|
$s02 = "0x4d,0x5a,0xe8,0x00,0x00,0x00,0x00,0x5b,0x89,0xdf,0x52,0x45,0x55,0x89,0xe5,0x81" ascii wide nocase
|
|
// x64 array
|
|
$s03 = "0x4d, 0x5a, 0x41, 0x52, 0x55, 0x48, 0x89, 0xe5, 0x48, 0x81, 0xec, 0x20, 0x00, 0x00, 0x00, 0x48" ascii wide nocase
|
|
$s04 = "0x4d,0x5a,0x41,0x52,0x55,0x48,0x89,0xe5,0x48,0x81,0xec,0x20,0x00,0x00,0x00,0x48" ascii wide nocase
|
|
// x86 hex
|
|
$s05 = "4d5ae8000000005b89df52455589e581" ascii wide nocase
|
|
$s06 = "4d 5a e8 00 00 00 00 5b 89 df 52 45 55 89 e5 81" ascii wide nocase
|
|
// x64 hex
|
|
$s07 = "4d5a4152554889e54881ec2000000048" ascii wide nocase
|
|
$s08 = "4d 5a 41 52 55 48 89 e5 48 81 ec 20 00 00 00 48" ascii wide nocase
|
|
// x86 base64
|
|
$s09 = "TVroAAAAAFuJ31JFVYnlg" ascii wide
|
|
// x64 base64
|
|
$s10 = "TVpBUlVIieVIgewgAAAAS" ascii wide
|
|
// x86 base64 + xor 0x23
|
|
$s11 = "bnnLIyMjI3iq/HFmdqrGo" ascii wide
|
|
// x64 base64 + xor 0x23
|
|
$s12 = "bnlicXZrqsZros8DIyMja" ascii wide
|
|
// x86 base64 utf16
|
|
$s13 = "TQBaAOgAAAAAAAAAAABbAIkA3wBSAEUAVQCJAOUAg" ascii wide
|
|
// x64 base64 utf16
|
|
$s14 = "TQBaAEEAUgBVAEgAiQDlAEgAgQDsACAAAAAAAAAAS" ascii wide
|
|
// x86 base64 + xor 0x23 utf16
|
|
$s15 = "biN5I2IjcSN2I2sjqiPGI2sjoiPPIwMjIyMjIyMja" ascii wide
|
|
// x64 base64 + xor 0x23 utf16
|
|
$s16 = "biN5I8sjIyMjIyMjIyN4I6oj/CNxI2YjdiOqI8Yjo" ascii wide
|
|
// x86 vba
|
|
$s17 = "Array(77,90,-24,0,0,0,0,91,-119,-33,82,69,85,-119,-27,-127" ascii wide
|
|
$s18 = "Array(77, 90, -24, 0, 0, 0, 0, 91, -119, -33, 82, 69, 85, -119, -27, -127" ascii wide
|
|
// x64 vba
|
|
$s19 = "Array(77,90,65,82,85,72,-119,-27,72,-127,-20,32,0,0,0,72" ascii wide
|
|
$s20 = "Array(77, 90, 65, 82, 85, 72, -119, -27, 72, -127, -20, 32, 0, 0, 0, 72" ascii wide
|
|
// x86 vbs
|
|
$s21 = "MZ\"&Chr(-27)&Chr(0)&Chr(0)&Chr(0)&Chr(0)&Chr(91)&Chr(-119)&Chr(-33)&\"REU\"&Chr(-119)&Chr(-27)&Chr(-127)" ascii wide
|
|
// x64 vbs
|
|
$s22 = "MZARUH\"&Chr(-119)&Chr(-27)&\"H\"&Chr(-127)&Chr(-20)&Chr(32)&Chr(0)&Chr(0)&Chr(0)&\"H" ascii wide
|
|
// x86 veil
|
|
$s23 = "\\x4d\\x5a\\xe8\\x00\\x00\\x00\\x00\\x5b\\x89\\xdf\\x52\\x45\\x55\\x89\\xe5\\x81" ascii wide nocase
|
|
// x64 veil
|
|
$s24 = "\\x4d\\x5a\\x41\\x52\\x55\\x48\\x89\\xe5\\x48\\x81\\xec\\x20\\x00\\x00\\x00\\x48" ascii wide nocase
|
|
condition:
|
|
any of them
|
|
}
|
|
|
|
rule cobaltstrike_beacon_xored_x86
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x86 xor decrypt loop
|
|
// 52 bytes variant
|
|
$h01 = { FC E8??000000 [0-32] EB27 ?? 8B?? 83??04 8B?? 31?? 83??04 ?? 8B?? 31?? 89?? 31?? 83??04 83??04 31?? 39?? 7402 EBEA ?? FF?? E8D4FFFFFF }
|
|
// 56 bytes variant
|
|
$h02 = { FC E8??000000 [0-32] EB2B ?? 8B??00 83C504 8B??00 31?? 83C504 55 8B??00 31?? 89??00 31?? 83C504 83??04 31?? 39?? 7402 EBE8 ?? FF?? E8D0FFFFFF }
|
|
// end of xor decrypt loop
|
|
$h11 = { 7402 EB(E8|EA) ?? FF?? E8(D0|D4)FFFFFF }
|
|
condition:
|
|
any of ($h0*) and (
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x4D5AE800 or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x904D5AE8 or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x90904D5A or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x9090904D or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x90909090
|
|
)
|
|
}
|
|
|
|
rule cobaltstrike_beacon_xored_x64
|
|
{
|
|
meta:
|
|
author = "Avast Threat Intel Team"
|
|
source = "https://github.com/avast/ioc"
|
|
strings:
|
|
// x64 xor decrypt loop
|
|
$h01 = { FC 4883E4F0 EB33 5D 8B4500 4883C504 8B4D00 31C1 4883C504 55 8B5500 31C2 895500 31D0 4883C504 83E904 31D2 39D1 7402 EBE7 58 FC 4883E4F0 FFD0 E8C8FFFFFF }
|
|
// end of xor decrypt loop
|
|
$h11 = { FC 4883E4F0 FFD0 E8C8FFFFFF }
|
|
condition:
|
|
$h01 and (
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x4D5A4152 or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x904D5A41 or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x90904D5A or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x9090904D or
|
|
uint32be(@h11+12) ^ uint32be(@h11+20) == 0x90909090
|
|
)
|
|
}
|