Malicious TeamPCP systemd User Unit Dropper via sysmon.py Persistence (via file_event)

ATT&CK techniques

Initial Access → Priv Esc

Recon
Resource Dev
Initial Access
- T1195.001Compromise Software Dependencies and Development Tools
Execution
- T1053.006Systemd Timers
Persistence
- T1053.006Systemd Timers
Priv Esc
- T1053.006Systemd Timers
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of a Python dropper named sysmon.py inside the per-user systemd unit directory which the TeamPCP compromise of Trivy writes on developer machines to gain persistent execution. The dropper polls an attacker C2 and downloads a follow-on payload so its presence indicates an active supply-chain implant that harvests cloud and SSH credentials.

Reporting behind it

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GitHub Audit: Dependabot Alerts and Security Updates Disabled

Windows file indicators for Octopus Scanner malware artifacts

Malicious TeamPCP systemd User Unit Dropper via sysmon.py Persistence (via file_event)

Pivot detection · T1195.001 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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