Tag Archives: dll files

Trojan patches library code to avoid detection

Researchers have discovered a dropper trojan that uses a new trick to stay active but hidden as it takes advantage of vulnerabilities in Windows code.

An analysis from BitDefender researchers revealed the approach of this new trojan. Rather than acting like traditional malware, Trojan.Dropper.UAJ differs in affecting computers by patching the library file, comres.dll, which forces all applications that rely on it to execute the threat. Continue reading Trojan patches library code to avoid detection

Trojan appears that leverages patched Microsoft Office flaw

Researchers at Symantec said they have spotted a trojan taking advantage of a previously patched Microsoft Office vulnerability.

The exploit, which is being used in targeted attacks, arrives as an email that contains a Microsoft Word file and a separate DLL file, a rare combination considering DLL files are not typically sent over email. Continue reading Trojan appears that leverages patched Microsoft Office flaw