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adjusted operators; fixed missing quotes
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rules/windows/defense_evasion_process_termination_followed_by_deletion.toml

Lines changed: 10 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -109,25 +109,27 @@ query = '''
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sequence by host.id with maxspan=5s
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[process where host.os.type == "windows" and event.type == "end" and
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process.code_signature.trusted != true and
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not process.executable : ("C:\\Windows\\SoftwareDistribution\\*.exe", "C:\\Windows\\WinSxS\\*.exe")
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not process.executable like
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("C:\\Windows\\SoftwareDistribution\\*.exe",
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"C:\\Windows\\WinSxS\\*.exe",
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"?:\\Windows\\Postillion\\Office\\*.exe")
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] by process.executable
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[file where host.os.type == "windows" and event.type == "deletion" and file.extension : ("exe", "scr", "com") and
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and process.code_signature.trusted != true and
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not process.executable :
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[file where host.os.type == "windows" and event.type == "deletion" and file.extension in ("exe", "scr", "com") and
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not process.executable like
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("?:\\Program Files\\*.exe",
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"?:\\Program Files (x86)\\*.exe",
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"?:\\Windows\\System32\\svchost.exe",
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"?:\\Windows\\System32\\drvinst.exe"
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"?:\\Windows\\Postillion\\Office\\*.exe) and
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not file.path : (
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"?:\\Windows\\System32\\drvinst.exe",
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"?:\\Windows\\Postillion\\Office\\*.exe") and
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not file.path like (
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"?:\\Program Files\\*.exe",
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"?:\\Program Files (x86)\\*.exe",
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"?:\\Windows\\Temp\\*\\DismHost.exe",
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"?:\\$WINDOWS.~BT\\Work\\*\\DismHost.exe",
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"?:\\$WinREAgent\\Scratch\\*\\DismHost.exe",
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"?:\\Windows\\tenable_mw_scan_*.exe",
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"?:\\Users\\*\\AppData\\Local\\Temp\\LogiUI\\Pak\\uninstall.exe",
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"?:\\ProgramData\\chocolatey\\*.exe
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"?:\\ProgramData\\chocolatey\\*.exe"
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)
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] by file.path
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'''

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