tokens: List of package names of apps on events from which the Trojan opens a fake Google Play window ( for the Russian version of the Trojan ) Example of Trojan screen overlapping other apps When bank card details are entered in the fake window , Riltok performs basic validation checks : card validity period , number checksum , CVC length , whether the number is in the denylist sewn into the Trojan code : Examples of phishing pages imitating mobile banks At the time of writing , the functionality of most of the Western versions of Riltok was somewhat pared down compared to the Russian one .