Detection rules › Sigma

Uncommon Child Processes Of SndVol.exe

Severity
medium
Author
X__Junior (Nextron Systems)
Source
upstream

Detects potentially uncommon child processes of SndVol.exe (the Windows volume mixer)

Event coverage

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

Stages and Predicates

Stage 1: selection

ParentImage|endswith: '\SndVol.exe'

Stage 2: not 1 of filter_main_rundll32

CommandLine|contains: ' shell32.dll,Control_RunDLL '
Image|endswith: '\rundll32.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
CommandLinematch
  • shell32.dll,Control_RunDLL
Imageends_with
  • \rundll32.exe corpus 76 (sigma 76)
ParentImageends_with
  • \SndVol.exe