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Posts Tagged ‘cipher’

The begining of spring seems to be an unsuccessful period of the year for cybercriminals in Eastern Europe. There is recent news referring to a neutralization of a group of hackers by joint cooperation between the Security Service of Ukraine with the Federal Security Service of the Russian Federation (FSB) on the web. These hackers […]

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We recently came across a sample of a back door remote access tool (RAT) written entirely in Java. The RAT is freely distributed on underground forums, free for any registered forum user to download. It is named Frutas, which means “fruit” in Spanish. Figure 1. Frutas logo The Frutas RAT allows attackers to create a connect-back client […]

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We continue to analyse the Shamoon malware. This blog contains information about the internals of the malicious samples involved in this campaign. Samples nesting The main executable (dropper) includes 3 resources, each maintains a ciphered program. The cipher is pretty simple ? xor by dword. This was mentioned in our first blog-post. Resource PKCS12:112 maintains […]

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