Malicious DLL Side-Loading of vcomp100 via converter.exe

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 ImageMagick converter.exe loading vcomp100.dll from outside the Windows system directories. The IDAT loader chain delivering Vidar and ACR stealers abused this signed binary to side-load a malicious vcomp100.dll and execute stager code under a trusted process.

Reporting behind it

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Malicious DLL Side-Loading of vcomp100 via converter.exe

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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