JSS Loader
JSS Loader is Remote Access Trojan (RAT) with .NET and C++ variants that has been used by FIN7 since at least 2020.[1][2]
ID: S0648
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Type: MALWARE
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Platforms: Windows
Version: 1.0
Created: 22 September 2021
Last Modified: 15 October 2021
Techniques Used
| Domain | ID | Name | Use | |
|---|---|---|---|---|
| Enterprise | T1059 | .001 | Command and Scripting Interpreter: PowerShell |
JSS Loader has the ability to download and execute PowerShell scripts.[2] |
| .005 | Command and Scripting Interpreter: Visual Basic |
JSS Loader can download and execute VBScript files.[2] |
||
| .007 | Command and Scripting Interpreter: JavaScript |
JSS Loader can download and execute JavaScript files.[2] |
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| Enterprise | T1105 | Ingress Tool Transfer |
JSS Loader has the ability to download malicious executables to a compromised host.[2] |
|
| Enterprise | T1566 | .001 | Phishing: Spearphishing Attachment |
JSS Loader has been delivered by phishing emails containing malicious Microsoft Excel attachments.[1] |
| Enterprise | T1053 | .005 | Scheduled Task/Job: Scheduled Task |
JSS Loader has the ability to launch scheduled tasks to establish persistence.[2] |
| Enterprise | T1204 | .002 | User Execution: Malicious File |
JSS Loader has been executed through malicious attachments contained in spearphishing emails.[1] |
Groups That Use This Software
References
- eSentire. (2021, July 21). Notorious Cybercrime Gang, FIN7, Lands Malware in Law Firm Using Fake Legal Complaint Against Jack Daniels’ Owner, Brown-Forman Inc.. Retrieved September 20, 2021.
- Loui, E. and Reynolds, J. (2021, August 30). CARBON SPIDER Embraces Big Game Hunting, Part 1. Retrieved September 20, 2021.