Explorer WebDAV UNC Download Using At-Port Syntax

ATT&CK techniques

C2

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

What it detects

This rule detects explorer.exe launched with a UNC path that embeds an HTTP port using the WebDAV at-port syntax such as \\\\host@80\\. Qakbot-affiliated actors distributing Ransom Knight abused LNK files to run explorer against a remote WebDAV share like 89.23.96.203@80 to fetch information.exe. This at-port UNC form is a hallmark of WebDAV-based payload retrieval and rarely appears in legitimate use.

Reporting behind it

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Explorer WebDAV UNC Download Using At-Port Syntax

Pivot detection · T1105 · 9 related

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