Windows AdFind Exe
Description
This search looks for the execution of adfind.exe
with command-line arguments that it uses by default specifically the filter or search functions. It also considers the arguments necessary like objectcategory, see readme for more details: https://www.joeware.net/freetools/tools/adfind/usage.htm. AdFind.exe is a powerful tool that is commonly used for querying and retrieving information from Active Directory (AD). While it is primarily designed for AD administration and management, it has been seen used before by Wizard Spider, FIN6 and actors whom also launched SUNBURST.
- Type: TTP
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Endpoint
- Last Updated: 2023-05-15
- Author: Jose Hernandez, Bhavin Patel, Splunk
- ID: bd3b0187-189b-46c0-be45-f52da2bae67f
Annotations
Kill Chain Phase
- Exploitation
NIST
- DE.CM
CIS20
- CIS 10
CVE
Search
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| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where (Processes.process="* -f *" OR Processes.process="* -b *") AND (Processes.process=*objectcategory* OR Processes.process="* -gcb *" OR Processes.process="* -sc *") by Processes.dest Processes.user Processes.process_name Processes.process Processes.parent_process Processes.process_id Processes.parent_process_id
| `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_adfind_exe_filter`
Macros
The SPL above uses the following Macros:
windows_adfind_exe_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Required fields
List of fields required to use this analytic.
- _time
- Processes.process
- Processes.dest
- Processes.user
- Processes.process_name
- Processes.parent_process
- Processes.process_id
- Processes.parent_process_id
How To Implement
To successfully implement this search, you need to be ingesting logs with the process name, and command-line executions from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.
Known False Positives
ADfind is a command-line tool for AD administration and management that is seen to be leveraged by various adversaries. Filter out legitimate administrator usage using the filter macro.
Associated Analytic Story
RBA
Risk Score | Impact | Confidence | Message |
---|---|---|---|
25.0 | 50 | 50 | Windows AdFind Exe |
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
Reference
- https://www.volexity.com/blog/2020/12/14/dark-halo-leverages-solarwinds-compromise-to-breach-organizations/
- https://www.mandiant.com/resources/a-nasty-trick-from-credential-theft-malware-to-business-disruption
- https://www.joeware.net/freetools/tools/adfind/index.htm
- https://thedfirreport.com/2023/05/22/icedid-macro-ends-in-nokoyawa-ransomware/
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: 3