RARSTONE is the name of the RAT (REMOTE ACCESS TOOL) used in a cyber espionage campaign dubbed Naikon uncovered by security experts at TrendMicro. The APT campaign has been called Naikon, based on the common user agent strings found in related attacks (NOKIAN95/WEB) RAT was spread with a spear-phishing attacks against the target entities. Syrian Government used similar malware against dissidents were using Skype to communicate, it has used the same channel to spread the backdoor Xtreme Rat”]