Fsutil Symlink Eval

Date: 2025-10-07 ID: 169da367-87f4-413d-b0c9-b8c13e01d489 Author: Nasreddine Bencherchali, Splunk Environment: attack_range Directory: fsutil_symlink_eval

Description

Generated datasets for fsutil SymlinkEvaluation set in attack range.

MITRE ATT&CK Techniques

ID	Technique	Tactic
T1222.001	Windows File and Directory Permissions Modification	Defense Evasion

Environment Details

Field	Value
Environment	attack_range
Directory	fsutil_symlink_eval
Test Date	2025-10-07

Datasets

The following datasets were collected during this attack simulation:

Fsutil_symlink_eval.log

Path: /datasets/attack_techniques/T1222.001/fsutil_symlink_eval/fsutil_symlink_eval.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 Symlink Evaluation Change via Fsutil	`Anomaly`	Endpoint	T1222.001	Windows Post-Exploitation

Usage Instructions

Replay with Splunk Attack Data

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

1python replay.py --dataset /datasets/attack_techniques/T1222.001/fsutil_symlink_eval/fsutil_symlink_eval.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