Malicious rundll32 Executing w32analytics DLL Export (via process_creation)

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 loading w32analytics.dll and invoking its dll_u export, the execution stage of the loader observed in recent unusual malware. Proxying execution through rundll32 with a named DLL export runs attacker code under a trusted signed Windows utility.

Reporting behind it

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Suspicious Rundll32 Executing DLL Start Export With Control Flags

Suspicious Rundll32 Execution of Timestamp-Named DLL

Suspicious Rundll32 Loading DLL from LocalAppData with Short Export (via process_creation)

Malicious Word Spawning Rundll32 Loading DLL from Roaming Word Folder

Malicious rundll32 Executing w32analytics DLL Export (via process_creation)

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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