Techniques
Sample rules
Windows Service Creation Using Registry Entry
- source: splunk
- technicques:
- T1574.011
Description
The following analytic detects when reg.exe modify registry keys that define Windows services and their configurations in Windows to detect potential threats earlier and mitigate the risks. This detection is made by a Splunk query that searches for specific keywords in the process name, parent process name, user, and process ID. This detection is important because it suggests that an attacker has modified the registry keys that define Windows services and their configurations, which can allow them to maintain access to the system and potentially move laterally within the network. It is a common technique used by attackers to gain persistence on a compromised system and its impact can lead to data theft, ransomware, or other damaging outcomes. False positives can occur since legitimate uses of reg.exe to modify registry keys for Windows services can also trigger this alert. Next steps include reviewing the process and user context of the reg.exe activity and identify any other concurrent processes that might be associated with the attack upon triage.
Detection logic
| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Registry WHERE (Registry.registry_path="*\\SYSTEM\\CurrentControlSet\\Services*" Registry.registry_value_name = ImagePath) BY _time span=1h Registry.dest Registry.user Registry.registry_path Registry.registry_key_name Registry.registry_value_name Registry.registry_value_data Registry.process_guid
| `drop_dm_object_name(Registry)`
| where isnotnull(registry_value_data)
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_service_creation_using_registry_entry_filter`