Name:Windows AdFind Exe id:bd3b0187-189b-46c0-be45-f52da2bae67f version:6 date:2024-10-17 author:Jose Hernandez, Bhavin Patel, Splunk status:production type:TTP Description:The following analytic identifies the execution of `adfind.exe` with specific command-line arguments related to Active Directory queries. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names, command-line arguments, and parent processes. This activity is significant because `adfind.exe` is a powerful tool often used by threat actors like Wizard Spider and FIN6 to gather sensitive AD information. If confirmed malicious, this activity could allow attackers to map the AD environment, facilitating further attacks such as privilege escalation or lateral movement. Data_source:
-Sysmon EventID 1
-Windows Event Log Security 4688
-CrowdStrike ProcessRollup2
search:| 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 *" )) OR ((Processes.process="*trustdmp*" OR Processes.process="*dclist*")) 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`| `windows_adfind_exe_filter`
how_to_implement:The detection is based on data that originates from Endpoint Detection and Response (EDR) agents. These agents are designed to provide security-related telemetry from the endpoints where the agent is installed. To implement this search, you must ingest logs that contain the process GUID, process name, and parent process. Additionally, you must ingest complete command-line executions. These logs must be processed using the appropriate Splunk Technology Add-ons that are specific to the EDR product. The logs must also be mapped to the `Processes` node of the `Endpoint` data model. Use the Splunk Common Information Model (CIM) to normalize the field names and speed up the data modeling process. 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. References: -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/ drilldown_searches: name:'View the detection results for - "$user$"' search:'%original_detection_search% | search user = "$user$"' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' name:'View risk events for the last 7 days for - "$user$"' search:'| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$user$") starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' tags: analytic_story: - 'Domain Trust Discovery' - 'IcedID' - 'NOBELIUM Group' - 'Graceful Wipe Out Attack' - 'BlackSuit Ransomware' asset_type:Endpoint confidence:50 impact:50 message:Windows AdFind Exe detected with command-line arguments associated with Active Directory queries on machine - [dest] atomic_guid: - '736b4f53-f400-4c22-855d-1a6b5a551600' - 'b95fd967-4e62-4109-b48d-265edfd28c3a' - 'e1ec8d20-509a-4b9a-b820-06c9b2da8eb7' - '5e2938fb-f919-47b6-8b29-2f6a1f718e99' - 'abf00f6c-9983-4d9a-afbc-6b1c6c6448e1' - '51a98f96-0269-4e09-a10f-e307779a8b05' mitre_attack_id: - 'T1018' observable: name:'user' type:'User' - role: - 'Victim' product: - 'Splunk Enterprise' - 'Splunk Enterprise Security' - 'Splunk Cloud' required_fields: - '_time' - 'Processes.process' - 'Processes.dest' - 'Processes.user' - 'Processes.process_name' - 'Processes.parent_process' - 'Processes.process_id' - 'Processes.parent_process_id' risk_score:25.0 security_domain:endpoint
