LoFP LoFP / the windows guest account may be activated by it or support teams for temporary access or troubleshooting. filter activations related to authorized maintenance activities to reduce false alerts.

Techniques

Sample rules

Windows Guest Account Enabled Via Net.EXE

Description

By default, the Windows guest account is heavily restricted, with limited permissions and access to system resources. However, if the guest account is activated, it can potentially be used to perform malicious activities such as installing malware, deleting files, stealing data, or even taking control of the system.

Detection logic


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

from datamodel=Endpoint.Processes where

`process_net`
Processes.process="*user *"
Processes.process="*guest *"
Processes.process="*/active:yes*"

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_guest_account_enabled_via_net_exe_filter`