Detectionhightest
Rundll32 UNC Path Execution
Detects rundll32 execution where the DLL is located on a remote location (share)
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Launch
Nasreddine Bencherchali (Nextron Systems)Created Wed Aug 105cdb711b-5740-4fb2-ba88-f7945027afacwindows
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_img:
- Image|endswith: '\rundll32.exe'
- OriginalFileName: 'RUNDLL32.EXE'
- CommandLine|contains: 'rundll32'
selection_cli:
CommandLine|contains: ' \\\\'
condition: all of selection_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Rule Metadata
Rule ID
5cdb711b-5740-4fb2-ba88-f7945027afac
Status
test
Level
high
Type
Detection
Created
Wed Aug 10
Path
rules/windows/process_creation/proc_creation_win_rundll32_unc_path.yml
Raw Tags
attack.defense-evasionattack.executionattack.lateral-movementattack.t1021.002attack.t1218.011