Detection rules › Sigma
Windows Defender Definition Files Removed
Adversaries may disable security tools to avoid possible detection of their tools and activities by removing Windows Defender Definition Files
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1562.001 Impair Defenses: Disable or Modify Tools |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: all of selection_img
or:
Image|endswith: '\MpCmdRun.exe'
OriginalFileName: MpCmdRun.exe
Stage 2: all of selection_cli
CommandLine|contains: ' -All'
CommandLine|contains: ' -RemoveDefinitions'
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 |
|