Sigma rule: Suspicious File Execution From Internet Hosted WebDav Share

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-34961d7ae96f, updated 2023-02-21T00:00:00.000Z.

Rule

Title: Suspicious File Execution From Internet Hosted WebDav Share
Status: test
Level: high
Author: pH-T (Nextron Systems)
Date: 2022-09-01
Modified: 2023-02-21
File: rules/windows/process_creation/proc_creation_win_cmd_net_use_and_exec_combo.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the execution of the "net use" command to mount a WebDAV server and then immediately execute some content in it. As seen being used in malicious LNK files

Log source

product: windows
category: process_creation

Detection

selection_img:
    - Image|contains: '\cmd.exe'
    - OriginalFileName: 'Cmd.EXE'
selection_base:
    CommandLine|contains|all:
        - ' net use http'
        - '& start /b '
        - '\DavWWWRoot\'
selection_ext:
    CommandLine|contains:
        - '.exe '
        - '.dll '
        - '.bat '
        - '.vbs '
        - '.ps1 '
condition: all of selection_*

False positives (as the rule lists them)

Unknown

MITRE ATT&CK ids this rule names

T1059.001

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_cmd_net_use_and_exec_combo.yml

Sources and licences

SigmaHQ
"Suspicious File Execution From Internet Hosted WebDav Share" by pH-T (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_cmd_net_use_and_exec_combo.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious File Execution From Internet Hosted WebDav Share",
entity page, dataset version ref-34961d7ae96f, updated 2023-02-21T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/f0507c0f-a3a2-40f5-acc6-7f543c334993 (accessed 2026-11-03).
Underlying source: SigmaHQ rule f0507c0f-a3a2-40f5-acc6-7f543c334993, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.