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35 lines
1.1 KiB
YAML
35 lines
1.1 KiB
YAML
title: Potential AES-encrypted PowerShell patterns in CommandLine
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id: 47be590d-4a9e-4ab1-b9f6-a332709c2100
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status: stable
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description: |
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Detects suspicious execution of Powershell commands related to AES Encryption.
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This could be an indicator of use of Powershell to decrypt additionnal payload as observed during Emmenhtal infection.
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references: https://www.orangecyberdefense.com/global/blog/cert-news/emmenhtal-a-little-known-loader-distributing-commodity-infostealers-worldwide
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author: Orange Cyberdefense - Florian SIMONET
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date: 2024/08/09
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tags:
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- attack.execution
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- attack.defense_evasion
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- attack.t1059.001
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- attack.t1140
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- tlp.white
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logsource:
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product: windows
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category: process_creation
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detection:
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selection_img:
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Image|endswith:
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- '\powershell.exe'
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- '\pwsh.exe'
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OriginalFileName:
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- 'PowerShell.EXE'
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- 'pwsh.dll'
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selection_cmdline:
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CommandLine|contains|all:
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- 'System.Security.Cryptography.Aes'
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- 'CreateDecryptor'
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condition: all of selection_*
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falsepositives:
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- Unknown
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level: medium
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