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