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34 lines
1.1 KiB
YAML
34 lines
1.1 KiB
YAML
title: Suspicious Desktopimgdownldr Target File
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id: fc4f4817-0c53-4683-a4ee-b17a64bc1039
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status: experimental
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description: Detects a suspicious Microsoft desktopimgdownldr file creation that stores a file to a suspicious location or contains a file with a suspicious extension
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author: Florian Roth
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date: 2020/07/03
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references:
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- https://labs.sentinelone.com/living-off-windows-land-a-new-native-file-downldr/
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- https://twitter.com/SBousseaden/status/1278977301745741825
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logsource:
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product: windows
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category: file_event
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tags:
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- attack.defense_evasion
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- attack.t1105
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detection:
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selection:
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Image|endswith: svchost.exe
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TargetFilename|contains: '\Personalization\LockScreenImage\'
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filter1:
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TargetFilename|contains: 'C:\Windows\'
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filter2:
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TargetFilename|contains:
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- '.jpg'
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- '.jpeg'
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- '.png'
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condition: selection and not filter1 and not filter2
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fields:
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- CommandLine
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- ParentCommandLine
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falsepositives:
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- False positives depend on scripts and administrative tools used in the monitored environment
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level: high
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