Detect date
11/23/2017
Class
Trojan-Ransom
Platform
Win32

Parent class: TrojWare

Trojans are malicious programs that perform actions which are not authorized by the user: they delete, block, modify or copy data, and they disrupt the performance of computers or computer networks. Unlike viruses and worms, the threats that fall into this category are unable to make copies of themselves or self-replicate. Trojans are classified according to the type of action they perform on an infected computer.

Class: Trojan-Ransom

This type of Trojan modifies data on the victim computer so that the victim can no longer use the data, or it prevents the computer from running correctly. Once the data has been “taken hostage” (blocked or encrypted), the user will receive a ransom demand. The ransom demand tells the victim to send the malicious user money; on receipt of this, the cyber criminal will send a program to the victim to restore the data or restore the computer’s performance.

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Platform: Win32

Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.

Description

This malware is distributed via hacked RDP connections. Once started, it first terminates some processes from its denylist, then deletes shadow copies of all volumes, disables Windows recovery options, deletes backups and turns off the firewall. After that, it starts the encryption process. The malware encrypts files with extensions from a large list. This list includes a large number of user file extensions, such as documents, images, and music. It encrypts files by using the AES cypher, on all logical drives and network shares. The AES key is unique for each drive.

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