Sigma rule: Security Service Disabled Via Reg.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-bcacd68a45c4, updated 2023-06-05T00:00:00.000Z.

Rule

Title: Security Service Disabled Via Reg.EXE
Status: test
Level: high
Author: Florian Roth (Nextron Systems), John Lambert (idea), elhoim
Date: 2021-07-14
Modified: 2023-06-05
File: rules/windows/process_creation/proc_creation_win_reg_disable_sec_services.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of "reg.exe" to disable security services such as Windows Defender.

Log source

product: windows
category: process_creation

Detection

selection_reg_add:
    CommandLine|contains|all:
        - 'reg'
        - 'add'
selection_cli_reg_start:
    CommandLine|contains|all:
        - 'd 4'
        - 'v Start'
    CommandLine|contains:
        - '\AppIDSvc'
        - '\MsMpSvc'
        - '\NisSrv'
        - '\SecurityHealthService'
        - '\Sense'
        - '\UsoSvc'
        - '\WdBoot'
        - '\WdFilter'
        - '\WdNisDrv'
        - '\WdNisSvc'
        - '\WinDefend'
        - '\wscsvc'
        - '\wuauserv'
condition: all of selection_*

False positives (as the rule lists them)

Unlikely

MITRE ATT&CK ids this rule names

T1685

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_reg_disable_sec_services.yml

Sources and licences

SigmaHQ
"Security Service Disabled Via Reg.EXE" by Florian Roth (Nextron Systems), John Lambert (idea), elhoim (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_reg_disable_sec_services.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: Security Service Disabled Via Reg.EXE",
entity page, dataset version ref-bcacd68a45c4, updated 2023-06-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/5e95028c-5229-4214-afae-d653d573d0ec (accessed 2026-11-03).
Underlying source: SigmaHQ rule 5e95028c-5229-4214-afae-d653d573d0ec, 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.