Malware
BKA Trojaner
aka bwin3_bka
BKA Trojaner is a screenlocker ransomware that was active in 2011, displaying a police-themed message in German language.
BKA Trojaner, also known as bwin3_bka, is a Windows malware family.
Background
BKA Trojaner was a screenlocker ransomware seen in 2011 that presented victims with a police-themed message written in German.
Source: Malpedia (Fraunhofer FKIE).