Files
sigma-rules/rules/windows
Samirbous 26fb8e83a5 [New Rule] Potential Privileged Escalation via SamAccountName Spoofing (#1660)
* [New Rule] Potential Privileged Escalation via SamAccountName Spoofing

Identifies a suspicious computer account name rename event, this may indicate an attempt to exploit CVE-2021-42278 to elevated privileges from standard domain user to domain admin privileges. CVE-2021-42278 is a security vulnerability that allows potential attackers to impersonate a domain controller using computer account sAMAccountName spoofing.

https://cloudbrothers.info/en/exploit-kerberos-samaccountname-spoofing/
https://github.com/cube0x0/noPac

EQL

```
iam where event.action == "renamed-user-account" and
  /* machine account name renamed to user like account name */
  winlog.event_data.OldTargetUserName : "*$" and not winlog.event_data.NewTargetUserName : "*$"
```

* Create privilege_escalation_samaccountname_spoofing_attack.toml

* Update non-ecs-schema.json

* extra ref

* toml linted

* ref for MS kb5008102

* more ref

* Update rules/windows/privilege_escalation_samaccountname_spoofing_attack.toml

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>

* Update rules/windows/privilege_escalation_samaccountname_spoofing_attack.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update non-ecs-schema.json

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
2022-01-27 15:46:27 +01:00
..