Detection rules › Sigma
RDP session hijack via service creation abuse
Detects scenarios where an attacker create a service that triggers TSCON in order to preform local RDP session hijack.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1543.003 Create or Modify System Process: Windows Service |
| Lateral Movement | T1563.002 Remote Service Session Hijacking: RDP Hijacking |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Security-Auditing | Event ID 4697 | A service was installed in the system. |
| Service-Control-Manager | Event ID 7045 | Event ID 7045 |
Rule body yaml
title: RDP session hijack via service creation abuse
description: Detects scenarios where an attacker create a service that triggers TSCON in order to preform local RDP session hijack.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0003-Persistence/T1543.003-Create%20or%20Modify%20System%20Process-Windows%20Service
- https://www.ired.team/offensive-security/lateral-movement/t1076-rdp-hijacking-for-lateral-movement
- https://www.csoonline.com/article/3566917/rdp-hijacking-attacks-explained-and-how-to-mitigate-them.html
- https://gist.github.com/bohops/f722f1a54d9ac1070350bdcaf2da618b
- https://doublepulsar.com/rdp-hijacking-how-to-hijack-rds-and-remoteapp-sessions-transparently-to-move-through-an-da2a1e73a5f6
- https://twitter.com/bohops/status/992232940900962304
tags:
- attack.persistence
- attack.t1543.003
- attack.lateral_movement
- attack.t1563.002
author: mdecrevoisier
status: experimental
logsource:
product: windows
service:
- system
- security
detection:
selection1:
EventID: 4697 # Security channel
ServiceFileName|contains|all: # Full command: "cmd.exe /k tscon 2 /dest:rdp-tcp#5"
- 'tscon '
- '/dest:rdp-' # can also be UDP (rarely)
selection2:
EventID: 7045 # System channel
ImagePath|contains|all:
- 'tscon '
- '/dest:rdp-' # can also be UDP (rarely)
condition: 1 of selection*
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
1 of selection*Stage 1: selection1
selection1:
EventID: 4697
ServiceFileName|contains|all:
- 'tscon '
- '/dest:rdp-'
Stage 2: selection2
selection2:
EventID: 7045
ImagePath|contains|all:
- 'tscon '
- '/dest:rdp-'
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 |
|---|---|---|
ImagePath | match |
|
ServiceFileName | match |
|