Detectionhightest
Suspicious Rundll32 Invoking Inline VBScript
Detects suspicious process related to rundll32 based on command line that invokes inline VBScript as seen being used by UNC2452
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Florian Roth (Nextron Systems)Created Fri Mar 05Updated Sun Oct 091cc50f3f-1fc8-4acf-b2e9-6f172e1fdebdwindows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
CommandLine|contains|all:
- 'rundll32.exe'
- 'Execute'
- 'RegRead'
- 'window.close'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Rule Metadata
Rule ID
1cc50f3f-1fc8-4acf-b2e9-6f172e1fdebd
Status
test
Level
high
Type
Detection
Created
Fri Mar 05
Modified
Sun Oct 09
Path
rules/windows/process_creation/proc_creation_win_rundll32_inline_vbs.yml
Raw Tags
attack.privilege-escalationattack.defense-evasionattack.t1055