Malware
Kaiten
aka STD
According to netenrich, Kaiten is a Trojan horse that opens a back door on the compromised computer that allows it to perform other malicious activities.
Kaiten, also known as STD, is a Linux malware family.
Background
Per netenrich, Kaiten is a trojan that installs a backdoor on the infected machine, enabling further malicious actions. It does not replicate itself. The backdoor typically reaches a system either dropped by other malware or unknowingly downloaded by users who visit malicious websites.
Source: Malpedia (Fraunhofer FKIE).