Malicious Keylogger DLL Execution via Rundll32 klg.dll

ATT&CK techniques

Cred Access → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1056.001Keylogging
Discovery
Lateral Movement
Collection
- T1056.001Keylogging
C2
Exfiltration
Impact

What it detects

This rule detects rundll32.exe loading a DLL named klg.dll which Interlock ransomware operators deploy as a keylogger to capture credentials and keystrokes. The specific module name executed through rundll32 is a reliable behavioral indicator of the keylogging component.

Reporting behind it

Related detections9 linkedT1056.001 — drag to rearrange

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Suspicious BunnyLoader Keylog Capture File in AppData Temp (via file_event)

NjRAT Fileless Keylogger Storage via Registry Value (via registry_set)

Malicious Keylogger DLL Execution via Rundll32 klg.dll

Pivot detection · T1056.001 · 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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