BackgroundĬryptoLocker is a ransomware which targets computers running Microsoft Windows, believed to have first been posted to the Internet on 5 September 2013. CryptoLocker is propagated via infected email attachments, and via an Exploit kit(EK). Without access to the private key, it is next to impossible to decrypt the files that are being held for ransom. The attacker makes the private key available to the victim only after the ransom is paid, though that is not always the case as seen in recent ransomware campaigns. The public-private pair of keys is uniquely generated by the attacker for the victim with the private key to decrypt the files stored on the attacker’s server. Asymmetric (which has public and private) encryption is cryptography in which a pair of keys is used to encrypt and decrypt a file.
Ransomware is a type of malware that employs asymmetric encryption to take a victim’s information as hostage over a ransom. The variants of malware families share typical behavioral patterns reflecting their origin and purpose.
Malware, short form of malicious software, is any software used to disrupt computer operations, gather sensitive information, gain access to private computer systems, or display unwanted advertising. The malware being designed by attackers are polymorphic and metamorphic which have the ability to change their code as they propagate. One of the major and serious threats on the internet today is malicious software, often referred to as a Malware.
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