HackTool - GMER Rootkit Detector and Remover Execution

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

Detects the execution GMER tool based on image and hash fields.

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `1 of selection_img`

Image|endswith: '\gmer.exe'

Stage 2: `1 of selection_sysmon_hash`

or:
Hashes|contains: 'MD5=E9DC058440D321AA17D0600B3CA0AB04'
Hashes|contains: 'SHA1=539C228B6B332F5AA523E5CE358C16647D8BBE57'
Hashes|contains: 'SHA256=E8A3E804A96C716A3E9B69195DB6FFB0D33E2433AF871E4D4E1EAB3097237173'

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
`Hashes`	match	`MD5=E9DC058440D321AA17D0600B3CA0AB04` `SHA1=539C228B6B332F5AA523E5CE358C16647D8BBE57` `SHA256=E8A3E804A96C716A3E9B69195DB6FFB0D33E2433AF871E4D4E1EAB3097237173`
`Image`	ends_with	`\gmer.exe` corpus 2 (sigma 2)