33 lines
1.2 KiB
YAML
33 lines
1.2 KiB
YAML
title: PowerShell ICMP Exfiltration
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author: Bartlomiej Czyz @bczyz1, oscd.community
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date: 2020/10/10
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description: Detects Exfiltration Over Alternative Protocol - ICMP. Adversaries may
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steal data by exfiltrating it over an un-encrypted network protocol other than
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that of the existing command and control channel.
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detection:
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SELECTION_1:
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ScriptBlockText: '*New-Object*'
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SELECTION_2:
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ScriptBlockText: '*System.Net.NetworkInformation.Ping*'
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SELECTION_3:
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ScriptBlockText: '*.Send(*'
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
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falsepositives:
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- Legitimate usage of System.Net.NetworkInformation.Ping class
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id: 4c4af3cd-2115-479c-8193-6b8bfce9001c
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level: medium
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logsource:
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category: ps_script
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definition: Script block logging must be enabled
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product: windows
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modified: 2021/10/16
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1048.003/T1048.003.md#atomic-test-2---exfiltration-over-alternative-protocol---icmp
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status: experimental
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tags:
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- attack.exfiltration
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- attack.t1048.003
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yml_filename: powershell_icmp_exfiltration.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/powershell/powershell_script
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