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splunk-security_content/dev/endpoint/windows_nirsoft_advancedrun.yml
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2023-01-20 13:24:15 +01:00

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YAML

name: Windows NirSoft AdvancedRun
id: bb4f3090-7ae4-11ec-897f-acde48001122
version: 1
date: '2022-01-21'
author: Michael Haag, Splunk
status: production
type: TTP
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.
data_source:
- Sysmon Event ID 1
search:
selection1:
OriginalFileName: advancedrun.exe
selection2:
Image|endswith: advancedrun.exe
selection3:
CommandLine:
- '*EXEFilename*'
- '*/cfg*'
- '*RunAs*'
- '*WindowState*'
condition: (selection1 or selection2) and selection3
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
asset_type: Endpoint
confidence: 100
impact: 60
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
risk_score: 60
security_domain: endpoint
tests:
- name: True Positive Test
attack_data:
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1588.002/atomic_red_team/windows-sysmon.log
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
sourcetype: xmlwineventlog