Windows Archived Collected Data In TEMP Folder

name: Windows Archived Collected Data In TEMP Folder
id: cb56a1ea-e0b1-46d5-913f-e024cba40cbe
version: 10
creation_date: '2024-10-18'
modification_date: '2026-05-13'
author: Teoderick Contreras, Splunk
status: production
type: Anomaly
description: The following analytic detects the creation of archived files in a temporary folder, which may contain collected data. This behavior is often associated with malicious activity, where attackers compress sensitive information before exfiltration. The detection focuses on monitoring specific directories, such as temp folders, for the presence of newly created archive files (e.g., .zip, .rar, .tar). By identifying this pattern, security teams can quickly respond to potential data collection and exfiltration attempts, minimizing the risk of data breaches and improving overall threat detection.
data_source:
    - Sysmon EventID 11
search: |
    | tstats `security_content_summariesonly`
      count min(_time) as firstTime
      max(_time) as lastTime
    FROM datamodel=Endpoint.Filesystem where
      Filesystem.file_name IN ("*.zip", "*.rar", "*.tar", "*.7z")
      Filesystem.file_path IN ("*\\AppData\\Local\\Temp\\*", "*\\Windows\\Temp\\*")
    by Filesystem.action Filesystem.dest Filesystem.file_access_time
       Filesystem.file_create_time Filesystem.file_hash Filesystem.file_modify_time
       Filesystem.file_name Filesystem.file_path Filesystem.file_acl Filesystem.file_size
       Filesystem.process_guid Filesystem.process_id Filesystem.user Filesystem.vendor_product
    | `drop_dm_object_name(Filesystem)`
    | `security_content_ctime(firstTime)`
    | `security_content_ctime(lastTime)`
    | `windows_archived_collected_data_in_temp_folder_filter`
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: |
    Some installers, debugging or support tools may create archive files in the temp folder.
    Legitimate software may also use temporary folders for archiving purposes.
    Review and apply filters as needed.
references:
    - https://x.com/suyog41/status/1825869470323056748
    - https://g0njxa.medium.com/from-vietnam-to-united-states-malware-fraud-and-dropshipping-98b7a7b2c36d
intermediate_findings:
    entities:
        - field: dest
          type: system
          score: 20
          message: An archive file [$file_name$] was created in a temporary folder on [$dest$].
analytic_story:
    - Braodo Stealer
    - APT37 Rustonotto and FadeStealer
asset_type: Endpoint
mitre_attack_id:
    - T1560
product:
    - Splunk Enterprise
    - Splunk Enterprise Security
    - Splunk Cloud
category: endpoint
security_domain: endpoint