Cross-source coverage
T1098.007 / ATT&CK
Account Manipulation: Additional Local or Domain Groups
11 rules across 2 sources.
From MITRE ATT&CK 19.2
An adversary may add additional local or domain groups to an adversary-controlled account to maintain persistent access to a system or domain.
On Windows, accounts may use the net localgroup and net group commands to add existing users to local and domain groups. On Linux, adversaries may use the usermod command for the same purpose.
For example, accounts may be added to the local administrators group on Windows devices to maintain elevated privileges. They may also be added to the Remote Desktop Users group, which allows them to leverage Remote Desktop Protocol to log into the endpoints in the future. Adversaries may also add accounts to VPN user groups to gain future persistence on the network. On Linux, accounts may be added to the sudoers group, allowing them to persistently leverage Sudo and Sudo Caching for elevated privileges.
In Windows environments, machine accounts may also be added to domain groups. This allows the local SYSTEM account to gain privileges on the domain.
- Tactics
- Persistence · Privilege Escalation
- Platforms
- Windows · macOS · Linux
- Telemetry
-
WinEventLog:Securityauditd:SYSCALLmacos:unifiedlog
How MITRE says to detect it DET0310
Suspicious Addition to Local or Domain Groups
Windows Analytic 0865
Detects unauthorized additions of users or machine accounts to privileged local or domain groups (e.g., Administrators, Remote Desktop Users).
WinEventLog:SecurityEventCode=4728, 4729, 4732, 4733, 4756, 4757
Linux Analytic 0866
Detects unexpected use of usermod, gpasswd, or direct modification of /etc/group to elevate user group membership.
auditd:SYSCALLSYSCALL for usermod or /etc/group file modification
macOS Analytic 0867
Detects use of `dseditgroup` or `dscl` to add users to privileged macOS groups (e.g., admin).
macos:unifiedlogProcess execution or directory service changes
elastic/detection-rules
9 rules| Detection | Severity | Format |
|---|---|---|
| Potential Admin Group Account Addition | Medium | Elastic TOML |
| User Added to Privileged Group in Active Directory | Medium | Elastic TOML |
| Linux Group Creation | Low | Elastic TOML |
| Linux User Added to Privileged Group | Low | Elastic TOML |
| Spike in Group Lifecycle Change Events | Low | Elastic TOML |
| Spike in Group Management Events | Low | Elastic TOML |
| Unusual Group Name Accessed by a User | Low | Elastic TOML |
| User Added to the Admin Group | Low | Elastic TOML |
| User or Group Creation/Modification | Low | Elastic TOML |
Bert-JanP/Hunting-Queries-Detection-Rules
2 rules| Detection | Severity | Format |
|---|---|---|
| Commandline Group Addition | Undefined | KQL |
| MITRE ATT&CK Mapping | Undefined | KQL |