Mosquito — Malware Profile

Mosquito is a Win32 backdoor that has been used by Turla. Mosquito is made up of three parts: the installer, the launcher, and the backdoor. The main backdoor is called CommanderDLL and is launched by the loader program.

MITRE ATT&CK techniques (17)

• T1016 System Network Configuration Discovery
• T1027.011 Fileless Storage
• T1027.013 Encrypted/Encoded File
• T1033 System Owner/User Discovery
• T1047 Windows Management Instrumentation
• T1057 Process Discovery
• T1059.001 PowerShell
• T1059.003 Windows Command Shell
• T1070.004 File Deletion
• T1105 Ingress Tool Transfer
• T1106 Native API
• T1112 Modify Registry
• T1218.011 Rundll32
• T1518.001 Security Software Discovery
• T1546.015 Component Object Model Hijacking
• T1547.001 Registry Run Keys / Startup Folder
• T1573.001 Symmetric Cryptography

Attributed threat actors

• Turla

Read the full analysis on IntelFusions