sigmahighHunting

Suspicious Rundll32 Activity Invoking Sys File

Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452

MITRE ATT&CK

T1218.011

defense-evasion

Detection Query

selection1:
  CommandLine|contains: rundll32.exe
selection2:
  CommandLine|contains:
    - .sys,
    - ".sys "
condition: all of selection*

Author

Florian Roth (Nextron Systems)

Created

2021-03-05

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/

Tags

attack.defense-evasionattack.t1218.011

Raw Content

title: Suspicious Rundll32 Activity Invoking Sys File
id: 731231b9-0b5d-4219-94dd-abb6959aa7ea
status: test
description: Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452
references:
    - https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/
author: Florian Roth (Nextron Systems)
date: 2021-03-05
modified: 2022-10-09
tags:
    - attack.defense-evasion
    - attack.t1218.011
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        CommandLine|contains: 'rundll32.exe'
    selection2:
        CommandLine|contains:
            - '.sys,'
            - '.sys '
    condition: all of selection*
falsepositives:
    - Unknown
level: high