name: Windows NirSoft AdvancedRun
id: bb4f3090-7ae4-11ec-897f-acde48001122
version: 1
date: '2022-01-21'
author: Michael Haag, Splunk
type: TTP
datamodel:
- Endpoint
description: The following analytic identifies the use of AdvancedRun.exe. AdvancedRun.exe
  has similar capabilities as other remote programs like psexec. AdvancedRun may also
  ingest a configuration file with all settings defined and perform its activity.
  The analytic is written in a way to identify a renamed binary and also the common
  command-line arguments.
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
  as lastTime from datamodel=Endpoint.Processes where (Processes.process_name=advancedrun.exe
  OR Processes.original_file_name=advancedrun.exe) Processes.process IN ("*EXEFilename*","*/cfg*","*RunAs*",
  "*WindowState*") by Processes.dest Processes.user Processes.parent_process_name
  Processes.process_name Processes.process Processes.original_file_name Processes.process_id
  Processes.parent_process_id | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`|
  `security_content_ctime(lastTime)` | `windows_nirsoft_advancedrun_filter`'
how_to_implement: To successfully implement this search you need to be ingesting information
  on process that include the name of the process responsible for the changes from
  your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
  confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
  endpoint product.
known_false_positives: False positives should be limited as it is specific to AdvancedRun.
  Filter as needed based on legitimate usage.
references:
- http://www.nirsoft.net/utils/advanced_run.html
- https://www.microsoft.com/security/blog/2022/01/15/destructive-malware-targeting-ukrainian-organizations/
tags:
  analytic_story:
  - Unusual Processes
  - Ransomware
  - WhisperGate
  automated_detection_testing: passed
  confidence: 100
  context:
  - Source:Endpoint
  - Stage:Defense Evasion
  dataset:
  - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1588.002/atomic_red_team/windows-sysmon.log
  impact: 60
  kill_chain_phases:
  - Exploitation
  message: An instance of advancedrun.exe, $process_name$, was spawned by $parent_process_name$
    on $dest$ by $user$.
  mitre_attack_id:
  - T1588.002
  observable:
  - name: user
    type: User
    role:
    - Victim
  - name: Computer
    type: Hostname
    role:
    - Victim
  - name: parent_process_name
    type: Process
    role:
    - Parent Process
  - name: process_name
    type: Process
    role:
    - Child Process
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  required_fields:
  - _time
  - Processes.dest
  - Processes.user
  - Processes.parent_process_name
  - Processes.parent_process
  - Processes.original_file_name
  - Processes.process_name
  - Processes.process
  - Processes.process_id
  - Processes.parent_process_path
  - Processes.process_path
  - Processes.parent_process_id
  risk_score: 60
  security_domain: endpoint
  supported_tas:
  - Splunk_TA_microsoft_sysmon
  asset_type: Endpoint