LoFP LoFP / legitimate teamcity operations or updates may occasionally run java processes from the temp directory. review and filter based on verified teamcity activity.

Techniques

Sample rules

Windows TeamCity Payload Execution from Temp Directory

Description

Detects the bundled TeamCity java executing a payload out of the temp directory. This activity can be associated with a malicious plugin installed by metasploit for remote code execution.

Detection logic


| tstats `security_content_summariesonly`
  count min(_time) as firstTime
        max(_time) as lastTime

from datamodel=Endpoint.Processes where

Processes.process="*-classpath *"
Processes.process="*:\\Windows\\TEMP\\~spawn*"
Processes.process="*.tmp.dir *"
Processes.process="*.Payload*"
Processes.process="*TeamCity*"

by Processes.process Processes.vendor_product Processes.user_id Processes.process_hash
   Processes.parent_process_name Processes.parent_process_exec Processes.action
   Processes.dest Processes.process_current_directory Processes.process_path
   Processes.process_integrity_level Processes.original_file_name
   Processes.parent_process Processes.parent_process_path
   Processes.parent_process_guid Processes.parent_process_id
   Processes.process_guid Processes.process_id
   Processes.user Processes.process_name


| `drop_dm_object_name(Processes)`

| `security_content_ctime(firstTime)`

| `security_content_ctime(lastTime)`

| `windows_teamcity_payload_execution_from_temp_directory_filter`