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S0648 JSS Loader

JSS Loader is Remote Access Trojan (RAT) with .NET and C++ variants that has been used by FIN7 since at least 2020.12

Item Value
ID S0648
Associated Names
Version 1.0
Created 22 September 2021
Last Modified 15 October 2021
Navigation Layer View In ATT&CK® Navigator

Techniques Used

Domain ID Name Use
enterprise T1059 Command and Scripting Interpreter -
enterprise T1059.001 PowerShell JSS Loader has the ability to download and execute PowerShell scripts.2
enterprise T1059.005 Visual Basic JSS Loader can download and execute VBScript files.2
enterprise T1059.007 JavaScript JSS Loader can download and execute JavaScript files.2
enterprise T1105 Ingress Tool Transfer JSS Loader has the ability to download malicious executables to a compromised host.2
enterprise T1566 Phishing -
enterprise T1566.001 Spearphishing Attachment JSS Loader has been delivered by phishing emails containing malicious Microsoft Excel attachments.1
enterprise T1053 Scheduled Task/Job -
enterprise T1053.005 Scheduled Task JSS Loader has the ability to launch scheduled tasks to establish persistence.2
enterprise T1204 User Execution -
enterprise T1204.002 Malicious File JSS Loader has been executed through malicious attachments contained in spearphishing emails.1

Groups That Use This Software

ID Name References
G0046 FIN7 2