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If it is able to generate a key, CryptoLocker will then begin to sabotage all the MS Office documents. Definitely deploy IPS, if it is not already in use! Using SEP's optional IPS components will block this communication and keep files from being locked by this threat.

Once it is on the computer, CryptoLocker will contact a 'secret server' (Command and Control server) and generate a unique key with which to encrypt the victim's files. Sometimes Cryptolocker is brought into the network from Trojan.Zbot, so full system scans are necessary to identify any and all threats introduced in the environment. If SEP12.1's optional Proactive Threat Protection (SONAR) is running, it will prevent these double executable filenames from causing harm. Since Microsoft does not show extensions by default, they look like normal PDF files and trick victims into opening them. zip attachments contain executables that are disguised as PDF files: they have a PDF icon and are typically named something like FORM_. These emails would contain an attachment that, when opened, infects the computer. This infection is typically spread through emails sent to corporate email addresses, pretending to be from an array of legitimate companies. Prevention is far better than a cure for ransomware and ransomlock threats: end user education and the use of some of SEP's optional capabilities can help keep your data safe! One recent variation calls itself ' CryptoLocker.' Current definitions from Symantec detect this family as though older definitions classified it as. The following articles (and the links they contain) have more detail on the subject.Īdditional information about Ransomware threats The authors of these malicious threats have a very strong financial motive for infecting as many computers as possible, and have put substantial resources into making these threats prevalent. These threats hijack a whole computer or its data and demand that a payment is made in order to unlock or decrypt them. Recent years have shown a rise in the number of ransomware threats in circulation. This article deals with a few possible ways how to prevent and recover from one of today's most-destructive threats, should it infect your network and hold your data hostage.Ībout Cryptolocker and Ransomware: An Ounce of Prevention.

The first article, Using SEPM Alerts and Reports to Combat a Malware Outbreak, demonstrated how to use reporting features of SEP 12.1's SONAR component to identify Suspicious files for which there were no AntiVirus signatures yet created. This is the second of an informal series on how to keep your enterprise environment secure using often-overlooked capabilities of Symantec Endpoint Protection (and the OS upon which it functions).

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