Detection rules › Sigma

Visual Basic Command Line Compiler Usage

Severity
high
Author
Ensar Şamil, @sblmsrsn, @oscd_initiative
Source
upstream

Detects successful code compilation via Visual Basic Command Line Compiler that utilizes Windows Resource to Object Converter.

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1027.004 Obfuscated Files or Information: Compile After Delivery

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

Image|endswith: '\cvtres.exe'
ParentImage|endswith: '\vbc.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.

FieldKindValues
Imageends_with
  • \cvtres.exe corpus 2 (sigma 2)
ParentImageends_with
  • \vbc.exe