Possible python311 DLL Side-Loading by Non Python Host Process

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1574.001DLL
Persistence
- T1574.001DLL
Priv Esc
- T1574.001DLL
Defense Evasion
- T1574.001DLL
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a process that is not a Python interpreter loading python311.dll which can indicate DLL side-loading. Silver Fox side-loads a malicious python311.dll alongside a decoy executable to run ValleyRAT shellcode. Because many legitimate applications embed Python this pattern requires context before it can be confirmed as malicious.

Reporting behind it

Related detections9 linkedT1574.001 — drag to rearrange

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Possible python311 DLL Side-Loading by Non Python Host Process

Pivot detection · T1574.001 · 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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