httpclient is malware used by Putter Panda. It is a simple tool that provides a limited range of functionality, suggesting it is likely used as a second-stage or supplementary/backup tool. 
|Enterprise||T1071||.001||Application Layer Protocol: Web Protocols||
httpclient uses HTTP for command and control.
|Enterprise||T1059||.003||Command and Scripting Interpreter: Windows Command Shell||
httpclient opens cmd.exe on the victim.
|Enterprise||T1573||.001||Encrypted Channel: Symmetric Cryptography||
httpclient encrypts C2 content with XOR using a single byte, 0x12.