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Detection rules › Sigma

Diagnostic Library Sdiageng.DLL Loaded By Msdt.EXE

Status
test
Severity
high
Log source
product windows, category image_load
Author
Greg (rule)
Source
github.com/SigmaHQ/sigma

Detects both of CVE-2022-30190 (Follina) and DogWalk vulnerabilities exploiting msdt.exe binary to load the "sdiageng.dll" library

MITRE ATT&CK coverage

TacticTechniques
StealthT1202 Indirect Command Execution

Event coverage

ProviderEventTitle
SysmonEvent ID 7Image loaded

Rule body yaml

title: Diagnostic Library Sdiageng.DLL Loaded By Msdt.EXE
id: ec8c4047-fad9-416a-8c81-0f479353d7f6
status: test
description: Detects both of CVE-2022-30190 (Follina) and DogWalk vulnerabilities exploiting msdt.exe binary to load the "sdiageng.dll" library
references:
    - https://www.securonix.com/blog/detecting-microsoft-msdt-dogwalk/
author: Greg (rule)
date: 2022-06-17
modified: 2023-02-17
tags:
    - attack.stealth
    - attack.t1202
    - cve.2022-30190
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith: '\msdt.exe'
        ImageLoaded|endswith: '\sdiageng.dll'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Image|endswith: '\msdt.exe'
    ImageLoaded|endswith: '\sdiageng.dll'

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
  • \msdt.exe corpus 9 (sigma 9)
ImageLoadedends_with
  • \sdiageng.dll