Malicious Rundll32 Executing Svchost-Masquerading DLL via Command Line

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1218.011Rundll32
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects rundll32 executing a DLL named to typosquat svchost with a Start export, an execution technique following WS_FTP CVE-2023-40044 exploitation. The doubled-t filename svchostt.dll disguises malicious code as a system component. Detecting it exposes DLL-based payload execution on the host.

Reporting behind it

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Malicious Rundll32 Executing Svchost-Masquerading DLL via Command Line

Pivot detection · T1218.011 · 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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