Register to stream ATT&CKcon 2.0 October 29-30


Yahoyah is a Trojan used by Tropic Trooper as a second-stage backdoor.[1]

ID: S0388
Platforms: Windows
Contributors: Bart Parys
Version: 1.0

Techniques Used

Domain ID Name Use
Enterprise T1140 Deobfuscate/Decode Files or Information Yahoyah decrypts downloaded files before execution. [1]
Enterprise T1027 Obfuscated Files or Information Yahoyah encrypts its configuration file using a simple algorithm. [1]
Enterprise T1105 Remote File Copy Yahoyah uses HTTP GET requests to download other files that are executed in memory. [1]
Enterprise T1063 Security Software Discovery Yahoyah checks for antimalware solution processes on the system. [1]
Enterprise T1071 Standard Application Layer Protocol Yahoyah uses HTTP for C2. [1]
Enterprise T1082 System Information Discovery Yahoyah checks for the system’s Windows OS version and hostname. [1]

Groups That Use This Software

ID Name References
G0081 Tropic Trooper [1]