Suspicious Side-Loaded DLL Loaded by SSH Agent for Lazarus ServiceChanger

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 the ssh-agent binary loading a libcrypto.dll from a non-standard path, a side-loading chain abused by the Lazarus ServiceChanger tool. The attackers convert ssh-agent into a persistent service and hijack its DLL dependency to run malicious code. A libcrypto.dll loaded by ssh-agent outside trusted install paths indicates side-loading.

Reporting behind it

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Suspicious Side-Loaded DLL Loaded by SSH Agent for Lazarus ServiceChanger

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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