Try in Splunk Security Cloud

Description

This search looks for specific authentication events from the Windows Security Event logs to detect potential attempts at using the Pass-the-Hash technique.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel:
  • Last Updated: 2020-10-15
  • Author: Bhavin Patel, Patrick Bareiss, Splunk
  • ID: f5939373-8054-40ad-8c64-cec478a22a4b

ATT&CK

ID Technique Tactic
T1550 Use Alternate Authentication Material Defense Evasion, Lateral Movement
T1550.002 Pass the Hash Defense Evasion, Lateral Movement
`wineventlog_security` EventCode=4624 (Logon_Type=3 Logon_Process=NtLmSsp WorkstationName=WORKSTATION NOT AccountName="ANONYMOUS LOGON") OR (Logon_Type=9 Logon_Process=seclogo) 
| fillnull 
| stats count min(_time) as firstTime max(_time) as lastTime by EventCode, Logon_Type, WorkstationName, user, dest 
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)` 
| `detect_activity_related_to_pass_the_hash_attacks_filter` 

Associated Analytic Story

How To Implement

To successfully implement this search, you must ingest your Windows Security Event logs and leverage the latest TA for Windows.

Required field

  • _time
  • EventCode
  • Logon_Type
  • Logon_Process
  • WorkstationName
  • user
  • dest

Kill Chain Phase

  • Actions on Objectives

Known False Positives

Legitimate logon activity by authorized NTLM systems may be detected by this search. Please investigate as appropriate.

RBA

Risk Score Impact Confidence Message
49.0 70 70 The following $EventCode$ occurred on $dest$ by $user$ with Logon Type 3, which may be indicative of the pass the hash technique.

Reference

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

source | version: 5