Malware
TelAndExt
According to Check Point, this is a Telegram-focused infostealer (FTP / Delphi) used to target Iranian expats and dissidents.
TelAndExt is a Windows malware family.
Background
Check Point identifies this as a Telegram-centric infostealer (FTP / Delphi) deployed against Iranian expatriates and dissidents.
Source: Malpedia (Fraunhofer FKIE).