As of 2014, Kaspersky's research hubs analyze more than 350,000 malware samples per day. Kaspersky also publishes the annual Global IT Security Risks Survey. Various covert government-sponsored cyber-espionage efforts were uncovered through their research. The Kaspersky Global Research and Analysis Team (GReAT) has led the discovery of sophisticated espionage platforms conducted by nations, such as Equation Group and the Stuxnet worm. In 2012 Kaspersky Lab was named a "Leader" in the Gartner Magic Quadrant for Endpoint Protection Platforms. According to Gartner, Kaspersky Lab is currently the third largest vendor of consumer IT security software worldwide and the fifth largest vendor of Enterprise Endpoint Protection. Kaspersky Lab is ranked 4th in Endpoint Security segment according to IDC data for 2010. It was the first Russian company to be included into the rating of the world's leading software companies, called the Software Top 100 (79th on the list, as of June 29, 2012). Kaspersky Lab ranks fourth in the global ranking of antivirus vendors by revenue. As of 2016, the software has about 400 million users and has the largest market-share of cybersecurity software vendors in Europe. Kaspersky expanded abroad from 2005 to 2010 and grew to $704 million in annual revenues by 2020, up 8% from 2016, though annual revenues were down 8% in North America due to U.S. Kaspersky Lab develops and sells antivirus, internet security, password management, endpoint security, and other cybersecurity products and services. It was founded in 1997 by Eugene Kaspersky, Natalya Kaspersky, and Alexey De-Monderik Eugene Kaspersky is currently the CEO. Laboratoriya Kasperskogo) is a Russian multinational cybersecurity and anti-virus provider headquartered in Moscow, Russia, and operated by a holding company in the United Kingdom. These are just some maths operations that are going to cause a delay in the execution of the program.Kaspersky Lab ( / k æ ˈ s p ɜːr s k i/ Russian: Лаборатория Касперского, tr. We are just counting until we reach the value 12341234, and pushing/poping the same value from the stack. To do that, we repeat this code 10 times before we execute the binary, in the nop sled that we prepared before: After that the real binary code is going to be executed outside the Kaspersky sandbox. We add a delay to let some seconds pass while AV is scanning the file, we will reach the maximum time scan allowed for scanning a single file and the scan is going to stop. We know that we bypassed the static scan, but how to bypass the dynamic one? I’ve read about this trick in this blog post: It seems that the AV it’s also doing a dynamic scan of the file. We scan the file with Kaspersky and it detects it again, with the same signature. I leave a 200 Nop sled before the decoder, and I implement the decoder and the registers recovery at the end. So it seems that we bypassed the static scan of the file. Now it’s the moment to scan the file, and Kaspersky doesn’t detect it, but our file doesn’t have the decoder stub. So I implement the encoder to encode the three parts. We are doing 3 operation, an addition, an XOR and a subtract.Īnd this the decoder, notice the inverse order:Īfter some trial and error encoding the file, I realized that I needed to encode the text, the rdata and the data section to avoid being detected. Shellcoding Linux x86 – Custom Crypter – Assignment 7įor this specific case, we don’t need a really complex encoder to bypass the AV, so we are going to keep the things simple. I’ve already wrote about a bit more complex topics during my SLAE exam, you can find the articles here: I’m going to use a really simple encoder because the purpose of this post is not to show you difficult encoding or encrypting techniques. This string can match an AV signature and our file can be detected, we should encode it. As an example, look at this string when I open the plain text binary in Olly: This specific binary has a big code cave and we don’t need to add more bytes with a PE and a hex editor, but I’m going to do it to modify the binary structure.Īfter doing this we need to encrypt or encode the binary to bypass the static scan. In the static scan the AV is going to look for strings that can match his signatures to try to identify the binary, also it can look for hashes or bytes length of the program. The AV is doing an static scan, and also a dynamic scan so we are going to need to bypass both. In this blog post I’m going to show how to do a trick to bypass the Kaspersky 2018 AV.įor the example, I’m going to use a netcat 99 binary that Kaspersky is going to detect as the following by default: not-a-virus:
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