Rundll32 Random Dll Ext

Date: 2026-03-27 ID: 6845d30e-29e5-11f1-a458-629be353806a Author: Teoderick Contreras, Splunk Environment: attack_range Directory: rundll32_random_dll_ext

Description

Generated datasets for rundll32 random dll ext in attack range.

MITRE ATT&CK Techniques

ID	Technique	Tactic
T1218.011	Rundll32	Defense Evasion

Environment Details

Field	Value
Environment	attack_range
Directory	rundll32_random_dll_ext
Test Date	2026-03-27

Datasets

The following datasets were collected during this attack simulation:

Rundll32_random_ext.log

Path: /datasets/attack_techniques/T1218.011/rundll32_random_dll_ext/rundll32_random_ext.log
Sourcetype: XmlWinEventLog
Source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational

The following detections in our security content repository use this attack data for testing:

Detection Name	Type	Source	MITRE ATT&CK	Analytic Story
Windows Rundll32 with Non-Standard File Extension	`Anomaly`	Endpoint	T1218.011	Living Off The Land, Suspicious Rundll32 Activity, Gh0st RAT

Usage Instructions

Replay with Splunk Attack Data

Replay attack data with replay.py from Splunk Attack Data.

1python replay.py --dataset /datasets/attack_techniques/T1218.011/rundll32_random_dll_ext/rundll32_random_ext.log --index attack_data

Manual Import

Download the dataset files from the paths listed above
Configure your Splunk instance with the appropriate sourcetypes
Import the logs using the Splunk Add Data wizard

Find more detections and analytics for this attack technique in our security content repository.

Source: GitHub | Version: 1.0