Suspicious Runscripthelper.exe

Hunt Hypothesis

Detects execution of powershell scripts via Runscripthelper.exe

Detection Rule

Sigma (Original)

title: Suspicious Runscripthelper.exe
id: eca49c87-8a75-4f13-9c73-a5a29e845f03
status: test
description: Detects execution of powershell scripts via Runscripthelper.exe
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Runscripthelper/
author: Victor Sergeev, oscd.community
date: 2020-10-09
modified: 2022-07-11
tags:
    - attack.execution
    - attack.stealth
    - attack.t1059
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\Runscripthelper.exe'
        CommandLine|contains: 'surfacecheck'
    condition: selection
falsepositives:
    - Unknown
level: medium

KQL (Azure Sentinel)

imProcessCreate
| where TargetProcessName endswith "\\Runscripthelper.exe" and TargetProcessCommandLine contains "surfacecheck"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Execution
• Technique: T1059 — Command and Scripting Interpreter
• Technique: T1202 — T1202

References

• https://lolbas-project.github.io/lolbas/Binaries/Runscripthelper/
• SigmaHQ Rule