Suspicious Execution of freenode Linux Backdoor Helper Binary

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.004Unix Shell
Persistence
Priv Esc
Defense Evasion
- T1014Rootkit
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of the helper binary used by the Linux backdoor from the freenode IRC network compromise. Observed in NCC Group research analyzing that Linux backdoor which deploys a helper at /bin/dh. Detecting this uncommon helper path helps surface rootkit-supported backdoor activity on Linux hosts.

Reporting behind it

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Suspicious Execution of freenode Linux Backdoor Helper Binary

Pivot detection · T1059.004 · 9 related

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