Detectionhightest
Cab File Extraction Via Wusa.EXE From Potentially Suspicious Paths
Detects the execution of the "wusa.exe" (Windows Update Standalone Installer) utility to extract ".cab" files using the "/extract" argument from potentially suspicious paths.
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Launch
Nasreddine Bencherchali (Nextron Systems)Created Fri Aug 05Updated Tue Nov 28c74c0390-3e20-41fd-a69a-128f0275a5eawindows
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_root:
Image|endswith: '\wusa.exe'
CommandLine|contains: '/extract:'
selection_paths:
CommandLine|contains:
- ':\PerfLogs\'
- ':\Users\Public\'
- ':\Windows\Temp\'
- '\Appdata\Local\Temp\'
# - '\Desktop\'
# - '\Downloads\'
condition: all of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Tactics
Rule Metadata
Rule ID
c74c0390-3e20-41fd-a69a-128f0275a5ea
Status
test
Level
high
Type
Detection
Created
Fri Aug 05
Modified
Tue Nov 28
Path
rules/windows/process_creation/proc_creation_win_wusa_cab_files_extraction_from_susp_paths.yml
Raw Tags
attack.execution