Suspicious Python SOCKS Proxy Script Execution from Temp via Ivanti Compromise

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1090Proxy
Exfiltration
Impact

What it detects

This rule detects execution of a Python SOCKS proxy script (PySoxy) from a temporary directory on Ivanti Connect Secure appliances. This behavior followed exploitation of Ivanti Connect Secure VPN zero-day vulnerabilities where attackers deployed /tmp/s.py to tunnel traffic. Attackers use such proxies to pivot into internal networks while evading network controls.

Reporting behind it

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Suspicious Python SOCKS Proxy Script Execution from Temp via Ivanti Compromise

Pivot detection · T1090 · 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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