Name:Windows RMM Named Pipe id:c07c7138-edf5-4a16-8b24-3842599235bf version:5 date:None author:Raven Tait, Splunk status:production type:Anomaly Description:The following analytic detects the creation or connection to known suspicious named pipes, which is a technique often used by offensive tools.
It leverages Sysmon EventCodes 17 and 18 to identify known default pipe names used by RMM tools.
If confirmed malicious, this could allow an attacker to abuse these to potentially gain persistence, command and control, or further system compromise.
Data_source:
| stats min(_time) as firstTime max(_time) as lastTime count by dest dvc process_exec process_guid process_id process_path signature signature_id vendor_product pipe_name user_id Image process_name
| lookup suspicious_rmm_named_pipes suspicious_pipe_name AS pipe_name OUTPUT tool, description | where isnotnull(tool) | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `windows_rmm_named_pipe_filter`
how_to_implement:To successfully implement this search, you need to be ingesting
logs with the process name and pipename from your endpoints. If you are using Sysmon,
you must have at least version 6.0.4 of the Sysmon TA.
known_false_positives:Some false positives may occur from RMM software used in your environment. Apply filters
based on known legitimate RMM software in your environment to reduce false positives.
References: -https://attack.mitre.org/techniques/T1218/009/ -https://docs.microsoft.com/en-us/windows/win32/ipc/named-pipes drilldown_searches: name:'View the detection results for - "$dest$"' search:'%original_detection_search% | search dest = "$dest$"' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' name:'View risk events for the last 7 days for - "$dest$"' search:'| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$") | 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:'7d' latest_offset:'0' analytic_story:['Cactus Ransomware', 'CISA AA24-241A', 'Command And Control', 'GhostRedirector IIS Module and Rungan Backdoor', 'Gozi Malware', 'Insider Threat', 'Interlock Ransomware', 'Ransomware', 'Remote Monitoring and Management Software', 'Scattered Lapsus$ Hunters', 'Scattered Spider', 'Seashell Blizzard']
