Detection rules › Sigma

Raccine Uninstall

Status
test
Severity
high
Log source
product windows, category process_creation
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects commands that indicate a Raccine removal from an end system. Raccine is a free ransomware protection tool.

MITRE ATT&CK coverage

TacticTechniques
Defense ImpairmentT1685 Disable or Modify Tools

Event coverage

Rule body yaml

title: Raccine Uninstall
id: a31eeaed-3fd5-478e-a8ba-e62c6b3f9ecc
status: test
description: Detects commands that indicate a Raccine removal from an end system. Raccine is a free ransomware protection tool.
references:
    - https://github.com/Neo23x0/Raccine
author: Florian Roth (Nextron Systems)
date: 2021-01-21
modified: 2022-10-09
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        CommandLine|contains|all:
            - 'taskkill '
            - 'RaccineSettings.exe'
    selection2:
        CommandLine|contains|all:
            - 'reg.exe'
            - 'delete'
            - 'Raccine Tray'
    selection3:
        CommandLine|contains|all:
            - 'schtasks'
            - '/DELETE'
            - 'Raccine Rules Updater'
    condition: 1 of selection*
falsepositives:
    - Legitimate deinstallation by administrative staff
level: high

Stages and Predicates

Stage 0: condition

1 of selection*

Stage 1: selection1

selection1:
    CommandLine|contains|all:
        - 'taskkill '
        - 'RaccineSettings.exe'

Stage 2: selection2

selection2:
    CommandLine|contains|all:
        - 'reg.exe'
        - 'delete'
        - 'Raccine Tray'

Stage 3: selection3

selection3:
    CommandLine|contains|all:
        - 'schtasks'
        - '/DELETE'
        - 'Raccine Rules Updater'

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
  • /DELETE corpus 8 (sigma 6, splunk 2)
  • Raccine Rules Updater
  • Raccine Tray
  • RaccineSettings.exe
  • delete corpus 23 (sigma 16, splunk 6, kusto 1)
  • reg.exe corpus 2 (sigma 2)
  • schtasks corpus 6 (sigma 5, kusto 1)
  • taskkill