From 2-spyware.com
Deal ransomware is the encryption-based cryptovirus that is designed to lock files until the ransom is paid for the alleged decryption.
Deal ransomware virus is the threat that makes data unopenable using the multi-stage encryption algorithm and demands ransom in cryptocurrency, claiming that the decryption key is the only way to recover those files. This virus belongs to the Phobos family that has many new variants released recently, this particular version marks files using .deal file extension, hence the name.