Florian Roth
eb914a878c
fix: Potential Fake Instance Of Hxtsr.EXE Executed - Use Image field in filter
30 lines
1013 B
YAML
30 lines
1013 B
YAML
title: Potential Fake Instance Of Hxtsr.EXE Executed
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id: 4e762605-34a8-406d-b72e-c1a089313320
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status: test
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description: |
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HxTsr.exe is a Microsoft compressed executable file called Microsoft Outlook Communications.
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HxTsr.exe is part of Outlook apps, because it resides in a hidden "WindowsApps" subfolder of "C:\Program Files".
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Any instances of hxtsr.exe not in this folder may be malware camouflaging itself as HxTsr.exe
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references:
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- Internal Research
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author: Sreeman
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date: 2020/04/17
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modified: 2024/02/08
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tags:
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- attack.defense_evasion
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- attack.t1036
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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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# TODO: Link this to the more generic system process rule
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selection:
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Image|endswith: '\hxtsr.exe'
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filter_main_hxtsr:
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Image|contains: ':\program files\windowsapps\microsoft.windowscommunicationsapps_'
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Image|endswith: '\hxtsr.exe'
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condition: selection and not 1 of filter_main_*
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falsepositives:
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- Unknown
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level: medium
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