Detection rules › Sigma
Lace Tempest Malware Loader Execution
Detects execution of a specific binary based on filename and hash used by Lace Tempest to load additional malware as reported by SysAid Team
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | No specific technique |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Lace Tempest Malware Loader Execution
id: 745ea50b-9673-4ba7-9426-cb45cf4a8e6d
status: test
description: Detects execution of a specific binary based on filename and hash used by Lace Tempest to load additional malware as reported by SysAid Team
references:
- https://www.sysaid.com/blog/service-desk/on-premise-software-security-vulnerability-notification
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-11-09
tags:
- attack.execution
- detection.emerging-threats
logsource:
category: process_creation
product: windows
detection:
selection_img:
Image|endswith: ':\Program Files\SysAidServer\tomcat\webapps\usersfiles\user.exe'
selection_hash:
Hashes|contains: 'SHA256=B5ACF14CDAC40BE590318DEE95425D0746E85B1B7B1CBD14DA66F21F2522BF4D'
condition: 1 of selection_*
falsepositives:
- Unlikely
level: high
Stages and Predicates
Stage 0: condition
1 of selection_*Stage 1: selection_img
selection_img:
Image|endswith: ':\Program Files\SysAidServer\tomcat\webapps\usersfiles\user.exe'
Stage 2: selection_hash
selection_hash:
Hashes|contains: 'SHA256=B5ACF14CDAC40BE590318DEE95425D0746E85B1B7B1CBD14DA66F21F2522BF4D'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Hashes | match |
| field:"Hashes" kind:match value:"SHA256=B5ACF14CDAC40BE590318DEE95425D0746E85B1B7B1CBD14DA66F21F2522BF4D" |
Image | ends_with |
| field:"Image" kind:ends_with value:":\Program Files\SysAidServer\tomcat\webapps\usersfiles\user.exe" |