We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Trojan:Java/Classloader.T
Detected by Microsoft Defender Antivirus
Aliases: Exploit.OSX.Smid.c (Kaspersky) Java/ByteVerify!exploit (CA) Exploit.Java.10 (Dr.Web) OSX/Exploit.Smid.B (ESET) Troj/Clsldr-U (Sophos)
Summary
Trojan:Java/Classloader.T is the detection for a malicious Java applet that exploits the vulnerability described in CVE-2009-3867. The vulnerability is due to an error in the implementation of the HsbParser.getSoundBank function that can be exploited to result in a stack-based buffer overflow.
Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as Microsoft Security Essentials, or the Microsoft Safety Scanner. For more information about using antivirus software, see http://www.microsoft.com/security/antivirus/av.aspx.
Additional recovery instructions
This threat exploits a known vulnerability in Java software. After removing this threat, make sure that you install the updates available from the vendor. You can read more about this vulnerability from the following links: