# Scan CVE-2021-41773 - Cyber Threat Intelligence

These _indicators_ were reported, collected, and generated during the [VulDB CTI analysis](https://vuldb.com/?kb.cti) of the campaign known as _Scan CVE-2021-41773_. The _activity monitoring_ correlates data from social media, forums, chat rooms, and darknet markets. It helps to determine associated actors, specific activities, expected intentions, emerging research, and ongoing attacks. Our unique _predictive model_ uses _big data_ to forecast activities and their characteristics.

_Live data_ and more _analysis capabilities_ are available at [https://vuldb.com/?actor](https://vuldb.com/?actor)

## Countries

These _countries_ are directly (e.g. origin of attacks) or indirectly (e.g. access by proxy) associated with Scan CVE-2021-41773:

* [CN](https://vuldb.com/?country.cn)
* [US](https://vuldb.com/?country.us)
* [CH](https://vuldb.com/?country.ch)
* ...

There are 3 more country items available. Please use our online service to access the data.

## Actors

These _actors_ are associated with Scan CVE-2021-41773 or other actors linked to the campaign.

ID | Actor | Confidence
-- | ----- | ----------
1 | [Unknown](https://vuldb.com/?actor.unknown) | High

## IOC - Indicator of Compromise

These _indicators of compromise_ (IOC) indicate associated network resources which are known to be part of research and attack activities of Scan CVE-2021-41773.

ID | IP address | Hostname | Actor | Confidence
-- | ---------- | -------- | ----- | ----------
1 | [23.251.102.74](https://vuldb.com/?ip.23.251.102.74) | zl-dal-us-gp3-wk109.internet-census.org | [Unknown](https://vuldb.com/?actor.unknown) | High
2 | [45.146.164.110](https://vuldb.com/?ip.45.146.164.110) | - | [Unknown](https://vuldb.com/?actor.unknown) | High
3 | [46.101.59.235](https://vuldb.com/?ip.46.101.59.235) | - | [Unknown](https://vuldb.com/?actor.unknown) | High
4 | ... | ... | ... | ...

There are 11 more IOC items available. Please use our online service to access the data.

## TTP - Tactics, Techniques, Procedures

_Tactics, techniques, and procedures_ (TTP) summarize the suspected MITRE ATT&CK techniques used within Scan CVE-2021-41773. This data is unique as it uses our predictive model for actor profiling.

ID | Technique | Weakness | Description | Confidence
-- | --------- | -------- | ----------- | ----------
1 | T1006 | CWE-21, CWE-22 | Path Traversal | High
2 | T1055 | CWE-74 | Injection | High
3 | T1059 | CWE-88, CWE-94 | Argument Injection | High
4 | ... | ... | ... | ...

There are 8 more TTP items available. Please use our online service to access the data.

## IOA - Indicator of Attack

These _indicators of attack_ (IOA) list the potential fragments used for technical activities like reconnaissance, exploitation, privilege escalation, and exfiltration during Scan CVE-2021-41773. This data is unique as it uses our predictive model for actor profiling.

ID | Type | Indicator | Confidence
-- | ---- | --------- | ----------
1 | File | `/admin/admin.php` | High
2 | File | `/adminlogin.asp` | High
3 | File | `/mc-admin/post.php?state=delete&delete` | High
4 | File | `/nagiosxi/admin/banner_message-ajaxhelper.php` | High
5 | File | `addmember.php` | High
6 | File | `addtocart.asp` | High
7 | File | `addtomylist.asp` | High
8 | File | `admin.x-shop.php` | High
9 | File | `admin/adminlogin.php` | High
10 | File | `admin/article_save.php` | High
11 | File | `admin/auth.php` | High
12 | ... | ... | ...

There are 95 more IOA items available (file, library, argument, input value, pattern, network port). Please use our online service to access the data.

## References

The following list contains _external sources_ which discuss the campaign and the associated activities:

* https://isc.sans.edu/forums/diary/Apache+is+Actively+Scan+for+CVE202141773+CVE202142013/27940/

## Literature

The following _articles_ explain our unique predictive cyber threat intelligence:

* [VulDB Cyber Threat Intelligence Documentation](https://vuldb.com/?kb.cti)
* [Cyber Threat Intelligence - Early Anticipation of Attacks](https://www.scip.ch/en/?labs.20201022)

## License

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