How was CryptoLocker spread?

How was CryptoLocker spread?

CryptoLocker was spread by the Gameover ZeuS botnet. CryptoLocker infected over 500,000 machines for a ransom of $300 or €300. Its most common method of infection was via email attachments – often in innocuous looking documents labelled .

How does ransomware spread laterally?

The malware gives the attacker a jumping-off point for lateral movement towards more sensitive systems. Then, with nothing holding them back, they can drop ransomware without restriction across the environment.

What is Trojan CryptoLocker an?

Cryptolocker is a malware threat that gained notoriety over the last years. It is a Trojan horse that infects your computer and then searches for files to encrypt. The Cryptolocker virus will display warning screens indicating that your data will be destroyed if you do not pay a ransom to obtain the private key.

Who was responsible for CryptoLocker?

Bogachev controlled the Gameover Zeus infrastructure and may have masterminded the attack campaign. The Gameover Zeus botnet and Cryptolocker infected hundreds of thousands of computers around the world and generated losses exceeding $100 million.

What is the most common method a malware uses to spread through a network?

Unmapped drives, mapped drives, emails and infecting other files are the most common methods. Not only it is important to detect the malware, but it is also important to prevent the spread of the malware to limit the extent of damage.

What operating systems are affected by CryptoLocker?

CryptoLocker Ransomware Infections

• Systems Affected. Microsoft Windows systems running Windows 8, Windows 7, Vista, and XP operating systems.
• Overview. US-CERT is aware of a malware campaign that surfaced in 2013 and is associated with an increasing number of ransomware infections.
• Description.
• Impact.
• Solution.
• References.

What operating system did Cryptolocker target?

The attack utilized a trojan that targeted computers running Microsoft Windows, and was believed to have first been posted to the Internet on 5 September 2013. It propagated via infected email attachments, and via an existing Gameover ZeuS botnet.

How is CryptoLocker propagated in Gameover ZeuS?

CryptoLocker was also propagated using the Gameover ZeuS trojan and botnet. When first run, the payload installs itself in the user profile folder, and adds a key to the registry that causes it to run on startup.

How does CryptoLocker get into a protected network?

Malware like CryptoLocker can enter a protected network through many vectors, including email, file sharing sites, and downloads. New variants have successfully eluded anti-virus and firewall technologies, and it’s reasonable to expect that more will continue to emerge that are able to bypass preventative measures.

What was the result of the CryptoLocker operation?

During the operation, a security firm involved in the process obtained the database of private keys used by CryptoLocker, which was in turn used to build an online tool for recovering the keys and files without paying the ransom.

What kind of key do you need for CryptoLocker?

CryptoLocker uses an RSA 2048-bit key to encrypt the files, and renames the files by appending an extension, such as,.encrypted or.cryptolocker or. [7 random characters], depending on the variant.