Malware
Nosu
According to PCrisk, Nosu is the name of a malicious program classified as a stealer.
Nosu is a Windows malware family.
Background
PCrisk identifies Nosu as a malicious program categorized as a stealer, built to siphon information off compromised machines. It can pull a broad range of data from both the device itself and the applications installed on it. The heaviest Nosu activity has been observed across North and South America and Southeast Asia.
Source: Malpedia (Fraunhofer FKIE).