Potential RjvPlatform.DLL Sideloading From Non-Default Location

Hunt Hypothesis

Detects potential DLL sideloading of “RjvPlatform.dll” by “SystemResetPlatform.exe” located in a non-default location.

Detection Rule

Sigma (Original)

title: Potential RjvPlatform.DLL Sideloading From Non-Default Location
id: 0e0bc253-07ed-43f1-816d-e1b220fe8971
status: test
description: Detects potential DLL sideloading of "RjvPlatform.dll" by "SystemResetPlatform.exe" located in a non-default location.
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:
        ImageLoaded|endswith: '\RjvPlatform.dll'
        Image: '\SystemResetPlatform.exe'
    filter_main_legit_path:
        Image|startswith: 'C:\Windows\System32\SystemResetPlatform\'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unlikely
level: high

KQL (Microsoft 365 Defender)

DeviceImageLoadEvents
| where (FolderPath endswith "\\RjvPlatform.dll" and InitiatingProcessFolderPath =~ "\\SystemResetPlatform.exe") and (not(InitiatingProcessFolderPath startswith "C:\\Windows\\System32\\SystemResetPlatform\\"))

Required Data Sources

False Positive Guidance

• Unlikely

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