Detection rules › Kusto Query Language
Stopping multiple processes using taskkill
This query checks for attempts to stop at least 10 separate processes using the taskkill.exe utility. This is a common technique used by ransomware to stop security products and other processes.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1562 Impair Defenses |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
| Defender-DeviceProcessEvents | 9001000 | Process activity (any) |
Stages and Predicates
Stage 1: source
DeviceProcessEvents
Stage 2: where
FileName eq "taskkill.exe"
Stage 3: summarize
Stage 4: where
taskKillCount gt "10"
Stage 5: extend
Stage 6: extend
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 |
|---|---|---|
FileName | eq |
|
taskKillCount | gt |
|