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S-Type is a backdoor that was used by Dust Storm from 2013 to 2014. [1]

ID: S0085
Platforms: Windows
Version: 1.0

Techniques Used

Domain ID Name Use
Enterprise T1087 Account Discovery S-Type runs the command net user on a victim. S-Type also runs tests to determine the privilege level of the compromised user. [1]
Enterprise T1043 Commonly Used Port S-Type uses ports 80, 443, and 8080 for C2. [1]
Enterprise T1136 Create Account S-Type may create a temporary user on the system named “Lost_{Unique Identifier}” with the password “pond~!@6”{Unique Identifier}.” [1]
Enterprise T1132 Data Encoding S-Type uses Base64 encoding for C2 traffic. [1]
Enterprise T1008 Fallback Channels S-Type primarily uses port 80 for C2, but falls back to ports 443 or 8080 if initial communication fails. [1]
Enterprise T1036 Masquerading S-Type may save itself as a file named msdtc.exe, which is also the name of the legitimate Microsoft Distributed Transaction Coordinator service. [1] [2]
Enterprise T1060 Registry Run Keys / Startup Folder S-Type may create a .lnk file to itself that is saved in the Start menu folder. It may also create the Registry key HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ IMJPMIJ8.1{3 characters of Unique Identifier}. [1]
Enterprise T1023 Shortcut Modification S-Type may create the file %HOMEPATH%\Start Menu\Programs\Startup\Realtek {Unique Identifier}.lnk, which points to the malicious msdtc.exe file already created in the %CommonFiles% directory. [1]
Enterprise T1071 Standard Application Layer Protocol S-Type uses HTTP for C2. [1]
Enterprise T1082 System Information Discovery The initial beacon packet for S-Type contains the operating system version and file system of the victim. [1]
Enterprise T1007 System Service Discovery S-Type runs the command net start on a victim. [1]

Groups That Use This Software

ID Name References
G0031 Dust Storm [1]