Potential RjvPlatform.DLL Sideloading From Default Location

Hunt Hypothesis

Detects loading of “RjvPlatform.dll” by the “SystemResetPlatform.exe” binary which can be abused as a method of DLL side loading since the “$SysReset” directory isn’t created by default.

Detection Rule

Sigma (Original)

title: Potential RjvPlatform.DLL Sideloading From Default Location
id: 259dda31-b7a3-444f-b7d8-17f96e8a7d0d
status: test
description: Detects loading of "RjvPlatform.dll" by the "SystemResetPlatform.exe" binary which can be abused as a method of DLL side loading since the "$SysReset" directory isn't created by default.
references:
    - https://twitter.com/0gtweet/status/1666716511988330499
author: X__Junior (Nextron Systems)
date: 2023-06-09
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image: 'C:\Windows\System32\SystemResetPlatform\SystemResetPlatform.exe'
        ImageLoaded: 'C:\$SysReset\Framework\Stack\RjvPlatform.dll'
    condition: selection
falsepositives:
    - Unknown
level: medium

KQL (Microsoft 365 Defender)

DeviceImageLoadEvents
| where InitiatingProcessFolderPath =~ "C:\\Windows\\System32\\SystemResetPlatform\\SystemResetPlatform.exe" and FolderPath =~ "C:\\$SysReset\\Framework\\Stack\\RjvPlatform.dll"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Persistence
• Tactic: Privilege Escalation
• Tactic: Execution
• Technique: T1574.001 — T1574.001

References

• https://twitter.com/0gtweet/status/1666716511988330499
• SigmaHQ Rule