Detectionhightest
Suspicious Advpack Call Via Rundll32.EXE
Detects execution of "rundll32" calling "advpack.dll" with potential obfuscated ordinal calls in order to leverage the "RegisterOCX" function
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Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)Created Wed May 17a1473adb-5338-4a20-b4c3-126763e2d3d3windows
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 Logic3 selectors
detection:
selection_img:
- Image|endswith: '\rundll32.exe'
- OriginalFileName: 'RUNDLL32.EXE'
- CommandLine|contains: 'rundll32'
selection_cli_dll:
CommandLine|contains: 'advpack'
selection_cli_ordinal:
- CommandLine|contains|all:
- '#+'
- '12'
- CommandLine|contains: '#-'
condition: all of selection_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
MITRE ATT&CK
Tactics
Rule Metadata
Rule ID
a1473adb-5338-4a20-b4c3-126763e2d3d3
Status
test
Level
high
Type
Detection
Created
Wed May 17
Path
rules/windows/process_creation/proc_creation_win_rundll32_advpack_obfuscated_ordinal_call.yml
Raw Tags
attack.defense-evasion