no false positives have been identified at this time. descriptor settings of the scmanager service should be immediately investigated and understood.

Techniques

T1569.002

Sample rules

Windows ScManager Security Descriptor Tampering Via Sc.EXE

source: splunk
technicques:
- T1569.002

Description

The following analytic detects changes in the ScManager service security descriptor settings. It leverages data from Endpoint Detection and Response (EDR) agents, specifically searching for any process execution involving the “sc.exe” binary with the “sdset” flag targeting the “scmanager” service. If confirmed malicious, this could allow an attacker to escalate their privileges.

Detection logic


| tstats `security_content_summariesonly` values(Processes.process) as process min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Processes
  WHERE (
        Processes.process_name=sc.exe
        OR
        Processes.original_file_name=sc.exe
    )
    Processes.process="*sdset *" Processes.process="*scmanager*"
  BY Processes.action Processes.dest Processes.original_file_name
     Processes.parent_process Processes.parent_process_exec Processes.parent_process_guid
     Processes.parent_process_id Processes.parent_process_name Processes.parent_process_path
     Processes.process Processes.process_exec Processes.process_guid
     Processes.process_hash Processes.process_id Processes.process_integrity_level
     Processes.process_name Processes.process_path Processes.user
     Processes.user_id Processes.vendor_product

| `drop_dm_object_name(Processes)`

| `security_content_ctime(firstTime)`

| `security_content_ctime(lastTime)`

| `windows_scmanager_security_descriptor_tampering_via_sc_exe_filter`