Suspicious WebDAV Retrieval via rundll32 and davclnt.dll (via process_creation)

ATT&CK techniques

Defense Evasion → C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1218.011Rundll32
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects rundll32.exe loading davclnt.dll to retrieve content from a remote WebDAV share. This technique was observed in an exposed WebDAV malware delivery lab analyzed by Rapid7 where a search-ms URI pointed victims to a remote WebDAV host to stage follow-on payloads. WebDAV retrieval through the DAV mini-redirector is rarely used by legitimate software and often signals staged malware delivery.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Suspicious Rundll32 Execution with Latrodectus Loader Exports (via process_creation)

Suspicious Rundll32 Execution with IcedID Loader Export (via process_creation)

Suspicious WebDAV Retrieval via rundll32 and davclnt.dll (via process_creation)

Pivot detection · T1105 · 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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