Raccine Uninstall

Status: test
Severity: high
Log source: category process_creation, product windows
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.

Known false positives

Legitimate deinstallation by administrative staff

MITRE ATT&CK coverage

Tactic	Techniques
Defense Impairment	`T1685` Disable or Modify Tools

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation
Security-Auditing	Event ID 4688: A new process has been created.

Rule body

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

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`/DELETE` corpus 8 (sigma 6, splunk 2) `Raccine Rules Updater` `Raccine Tray` `RaccineSettings.exe` `delete` corpus 31 (sigma 16, elastic 8, splunk 6, kusto 1) `reg.exe` corpus 2 (sigma 2) `schtasks` corpus 6 (sigma 5, kusto 1) `taskkill`	`field:"CommandLine" kind:match`

Raccine Uninstall

Known false positives

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection1

Stage 2: selection2

Stage 3: selection3

Indicators

Stage 0: `condition`

Stage 1: `selection1`

Stage 2: `selection2`

Stage 3: `selection3`