• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

Blackmailing Trojan encrypts hard-drive

DiamondGeezer

VIP Member
VIP Member
Joined
Nov 19, 2004
Messages
3,001
Likes
78
#1
Beware of this one doing the rounds......
Trojan that encrypts your hard drive and then demands cash for the key

http://www.theinquirer.net/gb/inquirer/news/2008/06/11/blackmailing-trojan-encrypts

KASPERSKY Lab has asked the world, plus dog, to help it crack the key to a Trojan that encrypts your hard drive and then demands cash for the key.

Gpcode has been used in isolated "ransomware" attacks for the last two years. The latest version encrypts all .bak, .doc, .jpg and .pdf and deletes the originals. It then erases itself after leaving a message about where to buy a decryption tool.

Kaspersky said that the files the malware encoded cannot be decrypted because it uses a very strong, 1024-bit key.

The insecurity outfit estimates it would take around 15 million modern computers, running for about a year, to crack such a key.

The company has broken Gpcode's encryption keys in the past, but that was only because the malware's maker had made mistakes implementing the encryption algorithm