Suspicious rundll32 Execution Without Command Line Arguments (via process_creation)

ATT&CK techniques

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects rundll32 being launched without any DLL or export arguments on its command line. Black Basta loaders spawn rundll32 with no arguments as a host process for injected code, so an argument-less rundll32 invocation is an anomaly worth investigating for defense evasion.

Reporting behind it

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Suspicious rundll32 Execution Without Command Line Arguments (via process_creation)

Pivot detection · T1685 · 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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