Malicious Latrodectus DLL Execution via rundll32 from AppData Roaming (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 executing the vierm_soft_x64 DLL from AppData Roaming, the Latrodectus payload LUNAR SPIDER disguised as a legitimate NVIDIA file. The malicious DLL is dropped by an MSI installer and launched from a user profile directory. This combination indicates loader execution ahead of Brute Ratel deployment.

Reporting behind it

Related detections9 linkedT1218.011 — drag to rearrange

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Malicious Latrodectus DLL Execution via rundll32 from AppData Roaming (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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