Renamed Plink Execution

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

Detects the execution of a renamed version of the Plink binary

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1036` Masquerading

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `selection`

or:
CommandLine|contains: ' -P '
CommandLine|contains: ' -R '
CommandLine|contains: ' -l forward'
OriginalFileName: Plink

Stage 2: `not filter`

Image|endswith: '\plink.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
`CommandLine`	match	`-P` corpus 2 (sigma 2) `-R` corpus 4 (sigma 4) `-l forward`
`Image`	ends_with	`\plink.exe` corpus 2 (sigma 2)
`OriginalFileName`	eq	`Plink`