wAgentTea
Intelligence Profile
wAgentTea is an HTTP(S) downloader.
It was deployed mostly against South Korean targets like a pharmaceutical company (Q4 2020) or semiconductor industry (Q2 2023). In several cases, the initial access was obtained via exploitation of South Korean software like Initech's INISAFE CrossWeb EX or Dream Security’s MagicLine4NX.
It uses AES-128 for encryption and decryption of its network traffic, and for decryption of its binary configuration.
There is a hard-coded list of parameter names used in its HTTP POST request:
identy;tname;blogdata;content;thesis;method;bbs;level;maincode;tab;idx;tb;isbn;entry;doc;
category;articles;portal
It contains a specific RTTI symbol ".?AVCHttp_socket@@".
Threat Analysis
wAgentTea is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.