Renamed DLL Sideloading via Renamed Greenshot Loading GreenshotPlugin from AppData (via image_load)

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 masqueraded FortiClientCompliance.exe, which is a renamed signed Greenshot binary, sideloading GreenshotPlugin.dll from a user-writable FortiClient compliance directory. Adversaries abuse this signed executable to load an attacker-controlled plugin DLL that in turn decrypts and runs shellcode, making early detection critical for surfacing the loader before command-and-control is established.

Reporting behind it

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Renamed DLL Sideloading via Renamed Greenshot Loading GreenshotPlugin from AppData (via image_load)

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.

Full detection rule

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