Bitter Hackers Deploy New PapRAT Backdoor in Cyberespionage Campaign Targeting South Asia

A cyberespionage group known as Bitter has been targeting organizations in South Asia with a new remote access trojan called PapRAT. PapRAT has been implemented in both C++ and Rust programming languages. The trojan's capabilities include executing commands and managing files. This campaign is attributed to the Bitter group, which is also known by several other names. The PapRAT backdoor is a previously unreported tool used by the group. Its deployment suggests an ongoing effort by Bitter to conduct cyberespionage in the South Asian region.