splunk_escuAnomaly

Windows Service Create RemComSvc

The following analytic detects the creation of the RemComSvc service on a Windows endpoint, typically indicating lateral movement using RemCom.exe. It leverages Windows EventCode 7045 from the System event log, specifically looking for the "RemCom Service" name. This activity is significant as it often signifies unauthorized lateral movement within the network, which is a common tactic used by attackers to spread malware or gain further access. If confirmed malicious, this could lead to unauthorized access to sensitive systems, data exfiltration, or further compromise of the network.

MITRE ATT&CK

T1543.003

Detection Query

`wineventlog_system` EventCode=7045 ServiceName="RemCom Service"
  | stats count min(_time) as firstTime max(_time) as lastTime
    BY dest ImagePath ServiceName
       ServiceType
  | `security_content_ctime(firstTime)`
  | `security_content_ctime(lastTime)`
  | `windows_service_create_remcomsvc_filter`

Author

Michael Haag, Splunk

Created

2026-03-10

Data Sources

Windows Event Log System 7045

References

Tags

Active Directory Discovery

Raw Content

name: Windows Service Create RemComSvc
id: 0be4b5d6-c449-4084-b945-2392b519c33b
version: 8
date: '2026-03-10'
author: Michael Haag, Splunk
type: Anomaly
status: production
data_source:
    - Windows Event Log System 7045
description: The following analytic detects the creation of the RemComSvc service on a Windows endpoint, typically indicating lateral movement using RemCom.exe. It leverages Windows EventCode 7045 from the System event log, specifically looking for the "RemCom Service" name. This activity is significant as it often signifies unauthorized lateral movement within the network, which is a common tactic used by attackers to spread malware or gain further access. If confirmed malicious, this could lead to unauthorized access to sensitive systems, data exfiltration, or further compromise of the network.
search: |-
    `wineventlog_system` EventCode=7045 ServiceName="RemCom Service"
      | stats count min(_time) as firstTime max(_time) as lastTime
        BY dest ImagePath ServiceName
           ServiceType
      | `security_content_ctime(firstTime)`
      | `security_content_ctime(lastTime)`
      | `windows_service_create_remcomsvc_filter`
how_to_implement: To implement this analytic, the Windows EventCode 7045 will need to be logged. The Windows TA for Splunk is also recommended.
known_false_positives: False positives may be present, filter as needed based on administrative activity.
references:
    - https://www.crowdstrike.com/blog/bears-midst-intrusion-democratic-national-committee/
    - https://github.com/kavika13/RemCom
drilldown_searches:
    - name: View the detection results for - "$dest$"
      search: '%original_detection_search% | search  dest = "$dest$"'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
    - name: View risk events for the last 7 days for - "$dest$"
      search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$") starthoursago=168  | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
rba:
    message: A new service was created related to RemCom on $dest$.
    risk_objects:
        - field: dest
          type: system
          score: 20
    threat_objects: []
tags:
    analytic_story:
        - Active Directory Discovery
    asset_type: Endpoint
    mitre_attack_id:
        - T1543.003
    product:
        - Splunk Enterprise
        - Splunk Enterprise Security
        - Splunk Cloud
    security_domain: endpoint
tests:
    - name: True Positive Test
      attack_data:
        - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1543.003/atomic_red_team/remcom_windows-system.log
          source: XmlWinEventLog:System
          sourcetype: XmlWinEventLog