splunk_escuAnomaly

Windows Service Created with Suspicious Service Name

The following analytic detects the creation of a Windows Service with a known suspicious or malicious name using Windows Event ID 7045. It leverages logs from the `wineventlog_system` to identify these services installations. This activity is significant as adversaries, including those deploying Clop ransomware, often create malicious services for lateral movement, remote code execution, persistence, and execution. If confirmed malicious, this could allow attackers to maintain persistence, execute arbitrary code, and potentially escalate privileges, posing a severe threat to the environment.

MITRE ATT&CK

T1569.002

Detection Query

`wineventlog_system` EventCode=7045
| stats values(ImagePath) as process, count, min(_time) as firstTime, max(_time) as lastTime values(EventCode) as signature by Computer, ServiceName, StartType, ServiceType, UserID
| eval process_name = replace(mvindex(split(process,"\\"),-1), "\"", "")
| rename Computer as dest, ServiceName as object_name, ServiceType as object_type, UserID as user_id
| lookup windows_suspicious_services service_name as object_name
| where isnotnull(tool_name)
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_service_created_with_suspicious_service_name_filter`

Author

Steven Dick

Created

2026-03-26

Data Sources

Windows Event Log System 7045

References

Tags

Active Directory Lateral MovementBrute Ratel C4CISA AA23-347AClop RansomwareFlax TyphoonPlugXQakbotSnake MalwareTuoniGh0st RAT

Raw Content

name: Windows Service Created with Suspicious Service Name
id: 35eb6d19-a497-400c-93c5-645562804b11
version: 7
date: '2026-03-26'
author: Steven Dick
status: production
type: Anomaly
description: The following analytic detects the creation of a Windows Service with a known suspicious or malicious name using Windows Event ID 7045. It leverages logs from the `wineventlog_system` to identify these services installations. This activity is significant as adversaries, including those deploying Clop ransomware, often create malicious services for lateral movement, remote code execution, persistence, and execution. If confirmed malicious, this could allow attackers to maintain persistence, execute arbitrary code, and potentially escalate privileges, posing a severe threat to the environment.
data_source:
    - Windows Event Log System 7045
search: |-
    `wineventlog_system` EventCode=7045
    | stats values(ImagePath) as process, count, min(_time) as firstTime, max(_time) as lastTime values(EventCode) as signature by Computer, ServiceName, StartType, ServiceType, UserID
    | eval process_name = replace(mvindex(split(process,"\\"),-1), "\"", "")
    | rename Computer as dest, ServiceName as object_name, ServiceType as object_type, UserID as user_id
    | lookup windows_suspicious_services service_name as object_name
    | where isnotnull(tool_name)
    | `security_content_ctime(firstTime)`
    | `security_content_ctime(lastTime)`
    | `windows_service_created_with_suspicious_service_name_filter`
how_to_implement: To successfully implement this search, you need to be ingesting logs with the Service name, Service File Name Service Start type, and Service Type from your endpoints.
known_false_positives: Legitimate applications may install services with uncommon services paths.
references:
    - https://attack.mitre.org/techniques/T1569/002/
    - https://github.com/BishopFox/sliver/blob/71f94928bf36c1557ea5fbeffa161b71116f56b2/client/command/exec/psexec.go#LL61C5-L61C16
    - https://www.microsoft.com/en-us/security/blog/2022/08/24/looking-for-the-sliver-lining-hunting-for-emerging-command-and-control-frameworks/
    - https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_windows_services_names_list.csv
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: $info_max_time$
    - name: Investigate service events on $dest$
      search: '`wineventlog_system` EventCode=7045 ServiceName = "$object_name$" dest = "$dest$"'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
rba:
    message: A known malicious service name $object_name$ was created using $process$ on $dest$, this may indicate the presence of [$tool_name$]
    risk_objects:
        - field: dest
          type: system
          score: 20
    threat_objects:
        - field: process
          type: process
        - field: object_name
          type: signature
tags:
    analytic_story:
        - Active Directory Lateral Movement
        - Brute Ratel C4
        - CISA AA23-347A
        - Clop Ransomware
        - Flax Typhoon
        - PlugX
        - Qakbot
        - Snake Malware
        - Tuoni
        - Gh0st RAT
    asset_type: Endpoint
    mitre_attack_id:
        - T1569.002
    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/T1055/sliver/sliver_windows-system.log
          source: XmlWinEventLog:System
          sourcetype: XmlWinEventLog