Detection rules › Sigma

Registry Modification Attempt Via VBScript

Severity
medium
Author
Swachchhanda Shrawan Poudel (Nextron Systems)
Source
upstream

Detects attempts to modify the registry using VBScript's CreateObject("Wscript.shell") and RegWrite methods via common LOLBINs. It could be an attempt to modify the registry for persistence without using straightforward methods like regedit.exe, reg.exe, or PowerShell. Threat Actors may use this technique to evade detection by security solutions that monitor for direct registry modifications through traditional tools.

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1059.005 Command and Scripting Interpreter: Visual Basic
PersistenceT1112 Modify Registry
Defense EvasionT1112 Modify Registry

Event coverage

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

Stages and Predicates

Stage 1: selection

CommandLine|contains: .RegWrite
CommandLine|contains: CreateObject
CommandLine|contains: Wscript.shell

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
CommandLinematch
  • .RegWrite
  • CreateObject
  • Wscript.shell