Detectionmediumtest
Interactive Bash Suspicious Children
Detects suspicious interactive bash as a parent to rather uncommon child processes
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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 Logic3 selectors
detection:
selection:
ParentCommandLine: 'bash -i'
anomaly1:
CommandLine|contains:
- '-c import '
- 'base64'
- 'pty.spawn'
anomaly2:
Image|endswith:
- 'whoami'
- 'iptables'
- '/ncat'
- '/nc'
- '/netcat'
condition: selection and 1 of anomaly*False Positives
Legitimate software that uses these patterns
References
1
Resolving title…
Internal ResearchMITRE ATT&CK
Techniques
Sub-techniques
Rule Metadata
Rule ID
ea3ecad2-db86-4a89-ad0b-132a10d2db55
Status
test
Level
medium
Type
Detection
Created
Mon Mar 14
Path
rules/linux/process_creation/proc_creation_lnx_susp_interactive_bash.yml
Raw Tags
attack.executionattack.defense-evasionattack.t1059.004attack.t1036