Detection rules › Sigma

PDF File Created By RegEdit.EXE

Severity
high
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects the creation of a file with the ".pdf" extension by the "RegEdit.exe" process. This indicates that a user is trying to print/save a registry key as a PDF in order to potentially extract sensitive information and bypass defenses.

Event coverage

ProviderEvent IDTitle
Sysmon11FileCreate

Stages and Predicates

Stage 1: selection

Image|endswith: '\regedit.exe'
TargetFilename|endswith: .pdf

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
  • \regedit.exe corpus 8 (sigma 8)
TargetFilenameends_with
  • .pdf corpus 2 (sigma 2)