There are multiple ways you can download ClamAV. Next we have to download and install ClamAV on our Kali Linux system. The first step, as usual, is to fire up Kali and open a terminal. We will also look at its malware signatures, as well as develop our own malware signatures based upon some of the malware we use here on Null Byte to learn about hacking. In this series, we will be examining the structure and operation of ClamAV. This is not to say that all AV software works the same, but they do work similarly. By doing this, we will have a better understanding of how all AV software works, and therefore can better devise strategies to evade it. The beauty of working with ClamAV is that it is open source, so we can open it up and look inside to see and understand how it works. ClamAV did recently develop a Windows version, so its acceptance at the consumer level is likely to improve. "MRG did a third-party evaluation of Immunet Protect (uses ClamAV as one of its engines) where it outscored 15 other leading AV vendors and was the ONLY product that had a 100% detection rate."ĬlamAV is just as effective as commercial antivirus software, and is widely utilized to protect email gateway systems, though, generally not consumer level systems. "The ClamAV detection engine is multifaceted-heuristics, support for numerous archivers (ZIP, RAR, OLE, etc.), tons of unpacking support ( UPX, PEtite, NSPack, etc.), and several different content inspection engines. When Sourcefire was purchased by Cisco in 2013, both Snort and ClamAV became a part of Cisco, the networking giant. About ClamAVĬlamAV is an open-source (GNU public license) project that was purchased by Sourcefire in 2007, the same company that purchased Snort. I prefer the term anti-malware as viruses are a subset of malware, but the industry and the public still use the term antivirus, so I will use them synonymously. Just a quick side note before we begin: when I use the term antivirus, you can substitute anti-malware. One of the most common questions that Null Byte readers ask is: "How can I evade detection by antivirus software on the target?" I have already talked about how AV software works, but to obtain a deeper understanding, what better way is there than opening up and dissecting some AV software?įor the remainder of this series, we will be dissecting the most widely used, open-source, multi-platform AV software in the world, ClamAV.
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