Detection rules › Sigma
Fortinet APT group abuse on Windows (user)
Detects scenarios where APT actors exploits Fortinet vulnerabilities to gain access into Windows infrastructure.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1136 Create Account |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Security-Auditing | Event ID 4720 | A user account was created. |
Rule body yaml
title: Fortinet APT group abuse on Windows (user)
description: Detects scenarios where APT actors exploits Fortinet vulnerabilities to gain access into Windows infrastructure.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/EVTX_full_APT_attack_steps
- https://www.aha.org/system/files/media/file/2021/05/fbi-flash-tlp-white-apt-actors-exploiting-fortinet-vulnerabilities-to-gain-access-for-malicious-activity-5-27-21.pdf
- https://www.securityweek.com/fbi-shares-iocs-apt-attacks-exploiting-fortinet-vulnerabilities
tags:
- attack.persistence
- attack.t1136
author: mdecrevoisier
status: experimental
logsource:
product: windows
service: security
detection:
selection:
EventID: 4720
TargetUserName:
- elie
- WADGUtilityAccount
condition: selection
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
EventID: 4720
TargetUserName:
- elie
- WADGUtilityAccount
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 |
|---|---|---|
TargetUserName | eq |
|