Florian Roth
41 lines
1.3 KiB
YAML
41 lines
1.3 KiB
YAML
title: Process Dump via Rundll32 and Comsvcs.dll
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id: 646ea171-dded-4578-8a4d-65e9822892e3
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description: Detects a process memory dump performed via ordinal function 24 in comsvcs.dll
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status: experimental
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references:
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- https://twitter.com/shantanukhande/status/1229348874298388484
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- https://twitter.com/pythonresponder/status/1385064506049630211?s=21
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- https://twitter.com/Hexacorn/status/1224848930795552769
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author: Florian Roth
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date: 2020/02/18
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modified: 2021/12/08
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tags:
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- attack.defense_evasion
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- attack.t1036
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- attack.credential_access
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- attack.t1003 # an old one
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- car.2013-05-009
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- attack.t1003.001
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logsource:
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category: process_creation
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product: windows
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detection:
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selection_comsvcs:
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CommandLine|contains:
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- 'comsvcs.dll'
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- 'rundll32'
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- '.dmp'
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selection_function:
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Commandline|contains:
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- '#24'
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- '#+24'
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- 'MiniDump'
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selection_full:
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CommandLine|contains: ' full'
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unique_selection:
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CommandLine|contains: '#-4294967272' # https://twitter.com/Hexacorn/status/1224848930795552769
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condition: all of selection* or unique_selection
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falsepositives:
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- Unlikely, because no one should dump the process memory in that way
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level: high
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