Windows Remote Access Software RMS Registry
Description
The following analytic is to identify a modification or creation of Windows registry related to the Remote Manipulator System (RMS) Remote Admin tool. RMS is a legitimate tool developed by russian organization TektonIT and has been observed being abused by adversaries to gain remote access to the targeted host. Azorult malware utilized RMS to gain remote access.
- Type: TTP
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Endpoint
- Last Updated: 2022-06-22
- Author: Teoderick Contreras, Splunk
- ID: e5b7b5a9-e471-4be8-8c5d-4083983ba329
Annotations
Kill Chain Phase
- Exploitation
NIST
- DE.CM
CIS20
- CIS 3
- CIS 5
- CIS 16
CVE
Search
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| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Registry where Registry.registry_path= "*\\SYSTEM\\Remote Manipulator System*" by Registry.registry_key_name Registry.user Registry.registry_path Registry.registry_value_data Registry.action Registry.dest
| `drop_dm_object_name(Registry)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_remote_access_software_rms_registry_filter`
Macros
The SPL above uses the following Macros:
windows_remote_access_software_rms_registry_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Required fields
List of fields required to use this analytic.
- _time
- Registry.registry_key_name
- Registry.registry_path
- Registry.user
- Registry.dest
- Registry.registry_value_name
- Registry.action
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 Registry
node. Also make sure that this registry was included in your config files ex. sysmon config to be monitored.
Known False Positives
administrators may enable or disable this feature that may cause some false positive.
Associated Analytic Story
RBA
Risk Score | Impact | Confidence | Message |
---|---|---|---|
90.0 | 100 | 90 | the registry related to RMS tool is created in $dest$ |
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
Reference
- https://app.any.run/tasks/a6f2ffe2-e6e2-4396-ae2e-04ea0143f2d8/
- https://malpedia.caad.fkie.fraunhofer.de/details/win.rms
Test Dataset
Replay any dataset to Splunk Enterprise by using our replay.py
tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
source | version: 1