Detection rules › Sigma
Suspicious Powercfg Execution To Change Lock Screen Timeout
Detects suspicious execution of 'Powercfg.exe' to change lock screen timeout
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: all of selection_power
or:
Image|endswith: '\powercfg.exe'
OriginalFileName: PowerCfg.exe
Stage 2: all of selection_standby
or:
CommandLine|contains: '-change '
CommandLine|contains: -standby-timeout-
CommandLine|contains: '/setacvalueindex '
CommandLine|contains: SCHEME_CURRENT
CommandLine|contains: SUB_VIDEO
CommandLine|contains: VIDEOCONLOCK
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|
OriginalFileName | eq |
|