34 lines
1.1 KiB
YAML
34 lines
1.1 KiB
YAML
title: Lsass Memory Dump via Comsvcs DLL
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author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
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date: 2020/10/20
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description: Detects adversaries leveraging the MiniDump export function from comsvcs.dll
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via rundll32 to perform a memory dump from lsass.
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detection:
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SELECTION_1:
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EventID: 10
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SELECTION_2:
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TargetImage: '*\lsass.exe'
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SELECTION_3:
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SourceImage: C:\Windows\System32\rundll32.exe
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SELECTION_4:
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CallTrace: '*comsvcs.dll*'
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
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falsepositives:
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- Unknown
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id: a49fa4d5-11db-418c-8473-1e014a8dd462
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level: critical
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logsource:
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category: process_access
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product: windows
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modified: 2021/06/21
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references:
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- https://twitter.com/shantanukhande/status/1229348874298388484
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- https://modexp.wordpress.com/2019/08/30/minidumpwritedump-via-com-services-dll/
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status: experimental
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tags:
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- attack.credential_access
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- attack.t1003.001
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yml_filename: sysmon_lsass_dump_comsvcs_dll.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_access
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