title: Rclone Execution via Command Line or PowerShell
author: Bhabesh Raj, Sittikorn S, Aaron Greetham (@beardofbinary) - NCC Group
date: 2021/05/10
description: Detects execution of RClone utility for exfiltration as used by various
  ransomwares strains like REvil, Conti, FiveHands, etc
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine: '*--config *'
  SELECTION_3:
    CommandLine: '*--no-check-certificate *'
  SELECTION_4:
    CommandLine: '* copy *'
  SELECTION_5:
    CommandLine:
    - '*pass*'
    - '*user*'
    - '*copy*'
    - '*sync*'
    - '*config*'
    - '*lsd*'
    - '*remote*'
    - '*ls*'
    - '*mega*'
    - '*pcloud*'
    - '*ftp*'
    - '*ignore-existing*'
    - '*auto-confirm*'
    - '*transfers*'
    - '*multi-thread-streams*'
    - '*no-check-certificate *'
  SELECTION_6:
    EventID: 1
  SELECTION_7:
    Description: Rsync for cloud storage
  SELECTION_8:
    Image: '*\rclone.exe'
  SELECTION_9:
    ParentImage:
    - '*\PowerShell.exe'
    - '*\cmd.exe'
  condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3 and SELECTION_4) or (SELECTION_5
    and SELECTION_6 and (SELECTION_7 or (SELECTION_8 and SELECTION_9)))))
falsepositives:
- Legitimate RClone use
fields:
- CommandLine
- ParentCommandLine
- Details
id: e37db05d-d1f9-49c8-b464-cee1a4b11638
level: high
logsource:
  category: process_creation
  product: windows
modified: 2021/10/24
references:
- https://research.nccgroup.com/2021/05/27/detecting-rclone-an-effective-tool-for-exfiltration/
- https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware
- https://us-cert.cisa.gov/ncas/analysis-reports/ar21-126a
- https://labs.sentinelone.com/egregor-raas-continues-the-chaos-with-cobalt-strike-and-rclone
- https://www.splunk.com/en_us/blog/security/darkside-ransomware-splunk-threat-update-and-detections.html
related:
- id: a0d63692-a531-4912-ad39-4393325b2a9c
  type: obsoletes
- id: cb7286ba-f207-44ab-b9e6-760d82b84253
  type: obsoletes
status: experimental
tags:
- attack.exfiltration
- attack.t1567.002
ruletype: SIGMA