Run Once Task Execution as Configured in Registry

Hunt Hypothesis

This rule detects the execution of Run Once task as configured in the registry

Detection Rule

Sigma (Original)

title: Run Once Task Execution as Configured in Registry
id: 198effb6-6c98-4d0c-9ea3-451fa143c45c
status: test
description: This rule detects the execution of Run Once task as configured in the registry
references:
    - https://twitter.com/pabraeken/status/990717080805789697
    - https://lolbas-project.github.io/lolbas/Binaries/Runonce/
    - https://twitter.com/0gtweet/status/1602644163824156672?s=20&t=kuxbUnZPltpvFPZdCrqPXA
author: 'Avneet Singh @v3t0_, oscd.community, Christopher Peacock @SecurePeacock (updated)'
date: 2020-10-18
modified: 2022-12-13
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\runonce.exe'
        - Description: 'Run Once Wrapper'
    selection_cli:
        - CommandLine|contains: '/AlternateShellStartup'
        - CommandLine|endswith: '/r'
    condition: all of selection_*
falsepositives:
    - Unknown
level: low

KQL (Azure Sentinel)

imProcessCreate
| where (TargetProcessName endswith "\\runonce.exe" or TargetProcessFileDescription =~ "Run Once Wrapper") and (TargetProcessCommandLine contains "/AlternateShellStartup" or TargetProcessCommandLine endswith "/r")

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Persistence
• Technique: T1112 — T1112

References

• https://twitter.com/pabraeken/status/990717080805789697
• https://lolbas-project.github.io/lolbas/Binaries/Runonce/
• https://twitter.com/0gtweet/status/1602644163824156672?s=20&t=kuxbUnZPltpvFPZdCrqPXA
• SigmaHQ Rule