Suspicious Rundll32 Activity Invoking Sys File

 1title: Suspicious Rundll32 Activity Invoking Sys File
 2id: 731231b9-0b5d-4219-94dd-abb6959aa7ea
 3status: test
 4description: Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452
 5references:
 6    - https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/
 7author: Florian Roth (Nextron Systems)
 8date: 2021-03-05
 9modified: 2022-10-09
10tags:
11    - attack.defense-evasion
12    - attack.t1218.011
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection1:
18        CommandLine|contains: 'rundll32.exe'
19    selection2:
20        CommandLine|contains:
21            - '.sys,'
22            - '.sys '
23    condition: all of selection*
24falsepositives:
25    - Unknown
26level: high