Rules: Suspicious Certutil Command
Detects a suspicious Microsoft certutil execution with sub commands like 'decode' sub command, which is sometimes used to decode malicious code with the built-in certutil utility.
| Detail | Value |
|---|---|
| Type | Templated Match |
| Category | Defense Evasion |
| Apply Risk to Entities | device_hostname, device_ip, user_username |
| Signal Name | Suspicious Certutil Command |
| Summary Expression | Suspicious Certutil command observed on host: {{device_hostname}} |
| Score/Severity | Static: 3 |
| Enabled by Default | True |
| Prototype | False |
| Tags | _mitreAttackTactic:TA0005, _mitreAttackTechnique:T1140 |
| Origin | Field |
|---|---|
| Normalized Schema | baseImage |
| Normalized Schema | commandLine |
| Normalized Schema | device_hostname |
| Normalized Schema | device_ip |
| Normalized Schema | user_username |