Detectionhightest
CobaltStrike Load by Rundll32
Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.
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Launch
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 Logic2 selectors
detection:
selection_rundll:
- Image|endswith: '\rundll32.exe'
- OriginalFileName: RUNDLL32.EXE
- CommandLine|contains:
- 'rundll32.exe'
- 'rundll32 '
selection_params:
CommandLine|contains: '.dll'
CommandLine|endswith:
- ' StartW'
- ',StartW'
condition: all of selection*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Tactics
Sub-techniques
Rule Metadata
Rule ID
ae9c6a7c-9521-42a6-915e-5aaa8689d529
Status
test
Level
high
Type
Detection
Created
Tue Jun 01
Modified
Fri Sep 16
Author
Path
rules/windows/process_creation/proc_creation_win_hktl_cobaltstrike_load_by_rundll32.yml
Raw Tags
attack.defense-evasionattack.t1218.011