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Detectionhightest

Potential Winnti Dropper Activity

Detects files dropped by Winnti as described in RedMimicry Winnti playbook

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Alexander RauschCreated Wed Jun 24Updated Thu Jan 05130c9e58-28ac-4f83-8574-0a4cc913b97ewindows
Log Source
WindowsFile Event
ProductWindows← raw: windows
CategoryFile Event← raw: file_event

Events for file system activity including creation, modification, and deletion.

Detection Logic
Detection Logic1 selector
detection:
    selection:
        TargetFilename|endswith:
            - '\gthread-3.6.dll'
            - '\sigcmm-2.4.dll'
            - '\Windows\Temp\tmp.bat'
    condition: selection
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
Resolving title…
redmimicry.com
MITRE ATT&CK
Rule Metadata
Rule ID
130c9e58-28ac-4f83-8574-0a4cc913b97e
Status
test
Level
high
Type
Detection
Created
Wed Jun 24
Modified
Thu Jan 05
Author
Alexander Rausch
Path
rules/windows/file/file_event/file_event_win_redmimicry_winnti_filedrop.yml
Raw Tags
attack.defense-evasionattack.t1027
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