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Windows: Mounting Internet Hosted WebDAV Shares via net.exe

Alerts on net.exe (net1.exe) commands that mount an HTTP/WebDAV network share.

FreeReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
Nasreddine Bencherchali (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2023-02-21
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

Lateral Movement

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags process executions where net.exe (or net1.exe) is used to mount an HTTP-based WebDAV share, indicated by command-line tokens including both ' use ' and ' http'. Attackers may use built-in Windows utilities to access remote resources over the network while blending in with legitimate administrative behavior. Detection relies on process creation telemetry, specifically the executable path/name and the command line contents.

Reporting behind it

Related detections9 linkedT1021.002 — drag to rearrange
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Suspicious Number of Oustanding SMB Requests Increased (via process_creation)
Suspicious SMB Insecure Guest Authentication Activated - Native (via security)
Suspicious PSexec Execution Over SMB Share (via security)
Suspicious Permissions Modification on a Network Share (via security)
Windows: Mounting Internet Hosted WebDAV Shares via net.exe
Pivot detection · T1021.002 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.