TYRANTTYRANT

DUMB variant discovered on November 16, 2017. Disguised itself as a popular virtual private network (VPN) in Iran known as Psiphon and infected Iranian users. Included Farsi-language ransom note, decryptable in the same way as previous DUMB-based variants. Message requested only US$15 for unlock key. Advertised two local and Iran-based payment processors: exchange.ir and webmoney.ir.Shared unique and specialized indicators with RASTAKHIZ; iDefense threat intelligence analysts believe this similarity confirms that the same actor was behind the repurposing of both types of ransomware.