Detectionmediumtest
User Added To Root/Sudoers Group Using Usermod
Detects usage of the "usermod" binary to add users add users to the root or suoders groups
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Log Source
LinuxProcess Creation
ProductLinux← raw: linux
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
Image|endswith: '/usermod'
CommandLine|contains:
- '-aG root'
- '-aG sudoers'
condition: selectionFalse Positives
Legitimate administrator activities
MITRE ATT&CK
Rule Metadata
Rule ID
6a50f16c-3b7b-42d1-b081-0fdd3ba70a73
Status
test
Level
medium
Type
Detection
Created
Wed Dec 21
Author
Path
rules/linux/process_creation/proc_creation_lnx_usermod_susp_group.yml
Raw Tags
attack.privilege-escalationattack.persistence