Name:Windows Process Accessing Windows Recall Directory id:d1d7048e-d095-4fb5-b43b-e570d574a1aa version:2 date:None author:Raven Tait, Splunk status:production type:Anomaly Description:This detection triggers on a process accessing the Windows Recall directory.
Recall is a new feature Microsoft release that takes screenshots every 5 or so seconds to provide context to it's AI features.
The initial release of Recall was lacking in the security department due to it being trivial to view and steal the data.
Due to this lack of security it's likely that info stealer malware will take advantage of this new feature.
Microsoft has recognized the security issues with Recall and is planning on making improvements.
Once those improvements are released we will re-assess this detection to make sure it is still relevant. Data_source:
-Windows Event Log Security 4663
search:`wineventlog_security` AccessList="%%4416" EventID="4663" ObjectName="*CoreAIPlatform.00\\UKP*" NOT ( ProcessName IN ( "*aixhost.exe", "*aihost.exe" ) ) | fillnull | stats count min(_time) as firstTime max(_time) as lastTime by Computer EventID AccessList ObjectName ProcessName
| rename Computer as dest | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `windows_process_accessing_windows_recall_directory_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:Legitimate system processes and trusted applications may access the Windows Recall directory for AI-related features. Review and allow access for approved software as needed. References: -https://doublepulsar.com/recall-stealing-everything-youve-ever-typed-or-viewed-on-your-own-windows-pc-is-now-possible-da3e12e9465e -https://github.com/xaitax/TotalRecall drilldown_searches: earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' name:'View the detection results for - "$user$" and "$dest$"' search:'%original_detection_search% | search user = "$user$" dest = "$dest$"' name:'View risk events for the last 7 days for - "$user$" and "$dest$"' search:'| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$user$", "$dest$") | 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:['Windows Post-Exploitation']
