Detection rules › Sigma

Uninstall Crowdstrike Falcon Sensor

Status
test
Severity
high
Log source
product windows, category process_creation
Author
frack113
Source
github.com/SigmaHQ/sigma

Adversaries may disable security tools to avoid possible detection of their tools and activities by uninstalling Crowdstrike Falcon

MITRE ATT&CK coverage

TacticTechniques
Defense ImpairmentT1685 Disable or Modify Tools

Event coverage

Rule body yaml

title: Uninstall Crowdstrike Falcon Sensor
id: f0f7be61-9cf5-43be-9836-99d6ef448a18
status: test
description: Adversaries may disable security tools to avoid possible detection of their tools and activities by uninstalling Crowdstrike Falcon
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
author: frack113
date: 2021-07-12
modified: 2023-03-09
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - '\WindowsSensor.exe'
            - ' /uninstall'
            - ' /quiet'
    condition: selection
falsepositives:
    - Administrator might leverage the same command line for debugging or other purposes. However this action must be always investigated
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    CommandLine|contains|all:
        - '\WindowsSensor.exe'
        - ' /uninstall'
        - ' /quiet'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • /quiet
  • /uninstall
  • \WindowsSensor.exe