Tanaka Zakku
39 lines
1.1 KiB
YAML
39 lines
1.1 KiB
YAML
title: Renamed MegaSync
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author: Sittikorn S
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date: 2021/06/22
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description: Detects the execution of a renamed meg.exe of MegaSync during incident
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response engagements associated with ransomware families like Nefilim, Sodinokibi,
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Pysa, and Conti.
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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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ParentImage: '*\explorer.exe'
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SELECTION_3:
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CommandLine: '*C:\Windows\Temp\meg.exe*'
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SELECTION_4:
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EventID: 1
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SELECTION_5:
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OriginalFileName: meg.exe
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SELECTION_6:
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Image: '*\meg.exe'
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condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3) or (SELECTION_4 and
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SELECTION_5 and not (SELECTION_6))))
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falsepositives:
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- Software that illegaly integrates MegaSync in a renamed form
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- Administrators that have renamed MegaSync
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id: 643bdcac-8b82-49f4-9fd9-25a90b929f3b
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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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references:
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- https://redcanary.com/blog/rclone-mega-extortion/
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1218
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yml_filename: win_renamed_megasync.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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