Detectionmediumtest
Suspicious Powercfg Execution To Change Lock Screen Timeout
Detects suspicious execution of 'Powercfg.exe' to change lock screen timeout
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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_power:
- Image|endswith: '\powercfg.exe'
- OriginalFileName: 'PowerCfg.exe'
selection_standby:
# powercfg.exe /SETACVALUEINDEX SCHEME_CURRENT SUB_VIDEO VIDEOCONLOCK
- CommandLine|contains|all:
- '/setacvalueindex '
- 'SCHEME_CURRENT'
- 'SUB_VIDEO'
- 'VIDEOCONLOCK'
# powercfg -change -standby-timeout-dc 3000
# powercfg -change -standby-timeout-ac 3000
- CommandLine|contains|all:
- '-change '
- '-standby-timeout-'
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
f8d6a15e-4bc8-4c27-8e5d-2b10f0b73e5b
Status
test
Level
medium
Type
Detection
Created
Fri Nov 18
Author
Path
rules/windows/process_creation/proc_creation_win_powercfg_execution.yml
Raw Tags
attack.defense-evasion