Detectionhightest
Suspicious Windows Update Agent Empty Cmdline
Detects suspicious Windows Update Agent activity in which a wuauclt.exe process command line doesn't contain any command line flags
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Launch
Florian Roth (Nextron Systems)Created Sat Feb 26Updated Sat Nov 1152d097e2-063e-4c9c-8fbb-855c8948d135windows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic2 selectors
detection:
selection_img:
- Image|endswith: '\Wuauclt.exe'
- OriginalFileName: 'Wuauclt.exe'
selection_cli:
CommandLine|endswith:
- 'Wuauclt'
- 'Wuauclt.exe'
condition: all of selection*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Techniques
Rule Metadata
Rule ID
52d097e2-063e-4c9c-8fbb-855c8948d135
Status
test
Level
high
Type
Detection
Created
Sat Feb 26
Modified
Sat Nov 11
Path
rules/windows/process_creation/proc_creation_win_wuauclt_no_cli_flags_execution.yml
Raw Tags
attack.defense-evasionattack.t1036