Detection rules › Sigma
Impacket SMBexec service creation (registry)
Detects scenarios where an attacker attempts to register the SMBexec service to estasblish persistence.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1112 Modify Registry, T1543.003 Create or Modify System Process: Windows Service |
| Privilege Escalation | T1543.003 Create or Modify System Process: Windows Service |
| Defense Impairment | T1112 Modify Registry |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 12 | RegistryEvent (Object create and delete) |
| Sysmon | Event ID 13 | RegistryEvent (Value Set) |
| Sysmon | Event ID 14 | RegistryEvent (Key and Value Rename) |
Rule body yaml
title: Impacket SMBexec service creation (registry)
description: Detects scenarios where an attacker attempts to register the SMBexec service to estasblish persistence.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0005-Defense%20Evasion/T1112-Modify%20registry
- https://github.com/SecureAuthCorp/impacket/blob/master/examples/smbexec.py
- https://nv2lt.github.io/windows/smb-psexec-smbexec-winexe-how-to/
tags:
- attack.defense_evasion
- attack.t1112
- attack.privilege_execution
- attack.t1543.003
author: mdecrevoisier
status: experimental
logsource:
product: windows
category: registry_event
detection:
selection:
TargetObject|contains: \CurrentControlSet\Services\BTOBTO\ # Service name can be changed in the application name
#Image|endswith: \services.exe
condition: selection
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetObject|contains: \CurrentControlSet\Services\BTOBTO\
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
TargetObject | match |
|