phantinuss
35 lines
1.1 KiB
YAML
35 lines
1.1 KiB
YAML
title: BlueMashroom DLL Load
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id: bd70d3f8-e60e-4d25-89f0-0b5a9cff20e0
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status: test
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description: Detects a suspicious DLL loading from AppData Local path as described in BlueMashroom report
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author: Florian Roth, Tim Shelton
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references:
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- https://www.virusbulletin.com/conference/vb2019/abstracts/apt-cases-exploiting-vulnerabilities-region-specific-software
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date: 2019/10/02
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modified: 2022/03/02
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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:
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- CommandLine|contains|all:
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- '\regsvr32'
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- '\AppData\Local\'
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- CommandLine|contains|all:
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- '\AppData\Local\'
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- ',DllEntry'
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filter_1:
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- CommandLine|contains: 'AppData\Local\Microsoft\TeamsMeetingAddin\'
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- CommandLine|endswith:
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- '\x86\Microsoft.Teams.AddinLoader.dll'
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- '\x86\Microsoft.Teams.AddinLoader.dll"'
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- '\x64\Microsoft.Teams.AddinLoader.dll'
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- '\x64\Microsoft.Teams.AddinLoader.dll"'
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condition: selection and not 1 of filter*
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falsepositives:
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- Unlikely
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level: critical
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tags:
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- attack.defense_evasion
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- attack.t1218.010
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