Malicious Python Execution from Hidden .pyp Directory in Lazarus InvisibleFerret Chain (via process_creation)

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.007JavaScript
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the Python interpreter running from a hidden .pyp folder inside a user profile, the staging location used by the Lazarus BeaverTail and InvisibleFerret campaign to launch its backdoor and stealer components. The dot-prefixed directory hides a private Python runtime that then executes payloads such as the .sysinfo module. Running python from such a concealed per-user path is not legitimate.

Reporting behind it

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Malicious Python Execution from Hidden .pyp Directory in Lazarus InvisibleFerret Chain (via process_creation)

Pivot detection · T1059.007 · 9 related

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