Tanaka Zakku
33 lines
1.2 KiB
YAML
33 lines
1.2 KiB
YAML
title: Detecting Fake Instances Of Hxtsr.exe
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author: Sreeman
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date: 2020/04/17
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description: HxTsr.exe is a Microsoft compressed executable file called Microsoft
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Outlook Communications.HxTsr.exe is part of Outlook apps, because it resides in
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a hidden "WindowsApps" subfolder of "C:\Program Files". Its path includes a version
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number, e.g., "C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7466.41167.0_x64__8wekyb3d8bbwe\HxTsr.exe".
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Any instances of hxtsr.exe not in this folder may be malware camouflaging itself
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as HxTsr.exe
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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Image: hxtsr.exe
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SELECTION_3:
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CurrentDirectory|re: (?i)c:\\\\program files\\\\windowsapps\\\\microsoft\.windowscommunicationsapps_.*\\\\hxtsr\.exe
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condition: (SELECTION_1 and SELECTION_2 and not (SELECTION_3))
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falsepositives:
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- unknown
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id: 4e762605-34a8-406d-b72e-c1a089313320
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level: medium
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logsource:
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category: process_creation
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product: windows
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modified: 2021/07/07
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1036
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yml_filename: win_detecting_fake_instances_of_hxtsr.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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