Detection rules › Sigma
Mint Sandstorm - Log4J Wstomcat Process Execution
Detects Log4J Wstomcat process execution as seen in Mint Sandstorm activity
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | No specific technique |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Mint Sandstorm - Log4J Wstomcat Process Execution
id: 7c97c625-0350-4f0a-8943-f6cadc88125e
status: test
description: Detects Log4J Wstomcat process execution as seen in Mint Sandstorm activity
references:
- https://www.microsoft.com/en-us/security/blog/2023/04/18/nation-state-threat-actor-mint-sandstorm-refines-tradecraft-to-attack-high-value-targets/
author: Nasreddine Bencherchali (Nextron Systems), MSTIC (idea)
date: 2023-04-20
modified: 2023-11-29
tags:
- attack.execution
- detection.emerging-threats
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\ws_tomcatservice.exe'
filter_main_repadmin:
Image|endswith: '\repadmin.exe'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selection and not 1 of filter_main_*Stage 1: selection
selection:
ParentImage|endswith: '\ws_tomcatservice.exe'
Stage 2: not filter_main_repadmin
filter_main_repadmin:
Image|endswith: '\repadmin.exe'
Exclusions
The rule actively suppresses these predicates.
| Field | Kind | Excluded values | Search |
|---|---|---|---|
Image | ends_with | \repadmin.exe | excludes:Image field:"Image" value:"\repadmin.exe" |
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with value:"\ws_tomcatservice.exe" |