Posts Tagged ‘byte’

More 64-bit obfuscator madness

Jul

2012

Just after we published a blog about a 64-bit obfuscator, we very quickly discovered another malware family following the same trend. Claretore is also using two-layer 64-bit obfuscation, although it does it a little differently to Ursnif. The first layer simply decrypts the code of the second layer and passes it control. There’s even a 64-bit […]

Category General Written by Microsoft Malware Protection Center 0 Comments

MySQL Password Verification Bypass CVE-2012-2122

Jun

2012

Recently, security researcher Sergei Golubchik reported a security issue in MySQL in which an attacker could log in to a MySQL database using literally any password. With this entry, I would like to take some time to explain the issue to our customers. The problem is serious in affected systems – but the exposure surface […]

Category General Written by TrendLabs 0 Comments

Symbian malware uses a 91-byte XOR key

Nov

2011

It’s high time the Crypto Girl talks about Crypto, isn’t it? A few days ago, I analyzed a malicious Opera Updater, named SymbOS/OpFake.A!tr.dial, and was surprised to discover it uses a 91-byte XOR key to conceal one of its configuration file. 91 bytes?! Yes, bytes, so 728 bits. This is quite a lot. AES only […]

Category Security Written by Fortinet Security Blog 0 Comments

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Posts Tagged ‘byte’

More 64-bit obfuscator madness

MySQL Password Verification Bypass CVE-2012-2122

Symbian malware uses a 91-byte XOR key

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