![]() ![]() McAfee recommends users install the latest patches for Internet Explorer, Adobe Flash, etc. In spite of the availability of patches for known vulnerabilities such as CVE-2015-2419, CVE-2015-7645, and others, this exploit kit still targets these weaknesses.These domains are already flagged by McAfee SiteAdvisor as malicious. We have seen the following domain names associated with this malware: #LOADER hxxp://103.*****.148/*****.exe#Īfter successful execution, TeslaCrypt encrypts files in the victim’s machine and demands money to decrypt them. The decoded comments section has the following format: The compromised machine receives another 404 error page along with a download link that delivers a TeslaCrypt variant from the remote server. The encoded data has the following format: Upon receiving the success message, the malware responds with the same cookie-auth browser agent, along with a reply containing an encoded data. The response for the command “enter” is present in the comments section of the HTML page, which is again a Base64-encoded () text that decodes to the response “success.” The server responds with a 404 error page. The variable “_wv=” is assigned to the Base64 text string “ZW50ZXI=” which decodes to the command “enter.” The payload then starts generating random domain names and contacts a remote server with the following parameters. Once successful, the exploit kit delivers a Trojan downloader and executes it on the victim’s machine. The redirector link may arrive via email as part of spam campaign. Like other exploit kits, Neutrino redirects users to a malicious landing page that hosts exploit files targeting various vulnerabilities. Last week, McAfee observed a novel approach in downloading TeslaCrypt using the Neutrino exploit kit. Similar to other ransomware variants, TeslaCrypt propagates through a wide range of spam campaigns and is also downloaded with the help of other malware: ![]() TeslaCrypt is a ransomware family that encrypts files and extorts money from its victims to decrypt the files.
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