Process Monitor Driver Creation By Non-Sysinternals Binary

Severity: medium
Author: Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects creation of the Process Monitor driver by processes other than Process Monitor (procmon) itself.

MITRE ATT&CK coverage

Tactic	Techniques
Privilege Escalation	`T1068` Exploitation for Privilege Escalation

Event coverage

Provider	Event ID	Title
Sysmon	11	FileCreate

Stages and Predicates

Stage 1: `selection`

TargetFilename|endswith: .sys
TargetFilename|contains: '\procmon'

Stage 2: `not 1 of filter_main_process_explorer`

or:
Image|endswith: '\procmon.exe'
Image|endswith: '\procmon64.exe'

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
`Image`	ends_with	`\procmon.exe` corpus 2 (sigma 2) `\procmon64.exe` corpus 2 (sigma 2)
`TargetFilename`	ends_with	`.sys` corpus 6 (sigma 6)
`TargetFilename`	match	`\procmon`