Try in Splunk Security Cloud

Description

This detection identifies access to PowerSploit modules that enable illegal management of computers and Active Directory elements.

  • Type: TTP
  • Product: Splunk Behavioral Analytics
  • Datamodel:
  • Last Updated: 2020-11-09
  • Author: Stanislav Miskovic, Splunk
  • ID: 75760c11-7d48-4968-b828-013b299e8f6d

ATT&CK

ID Technique Tactic
T1098 Account Manipulation Persistence
T1207 Rogue Domain Controller Defense Evasion
T1484 Domain Policy Modification Defense Evasion, Privilege Escalation

| from read_ssa_enriched_events()

| eval timestamp=parse_long(ucast(map_get(input_event, "_time"), "string", null)), cmd_line=ucast(map_get(input_event, "process"), "string", null), event_id=ucast(map_get(input_event, "event_id"), "string", null) 
| where cmd_line != null AND ( match_regex(cmd_line, /(?i)Set-DomainObject/)=true OR match_regex(cmd_line, /(?i)Set-ADObject/)=true OR match_regex(cmd_line, /(?i)Set-DomainObjectOwner/)=true OR match_regex(cmd_line, /(?i)Set-MasterBootRecord/)=true )


| eval start_time = timestamp, end_time = timestamp, entities = mvappend( ucast(map_get(input_event, "dest_user_id"), "string", null), ucast(map_get(input_event, "dest_device_id"), "string", null)), body=create_map(["event_id", event_id, "cmd_line", cmd_line]) 
| into write_ssa_detected_events();

Associated Analytic Story

How To Implement

You must be ingesting Windows Security logs from devices of interest, including the event ID 4688 with enabled command line logging.

Required field

  • dest_device_id
  • dest_user_id
  • process
  • _time

Kill Chain Phase

  • Actions on Objectives

Known False Positives

None identified.

RBA

Risk Score Impact Confidence Message
90.0 90 100 PowerSploit malware is controlling infrastructure by modifying Active Directory elements or local Master Boot Records. Operation is performed at the device $dest_device_id$, by the account $dest_user_id$ via command $cmd_line$

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

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