Suspicious Runscripthelper.exe

SIGMA detection rule by Victor Sergeev, oscd.community · NOASSERTION

Detects execution of powershell scripts via Runscripthelper.exe

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

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

e73477cc-d939-42cf-a1fa-7c7baf0a9e37

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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