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Virus:JAVA/Exdoer.O
Date discovered:23/03/2011
Type:Java
In the wild:No
Reported Infections:Medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:4.551 Bytes
MD5 checksum:573b84753f067a2fffb885f37df72d19
VDF version:7.10.10.08
IVDF version:7.11.05.50 - Wednesday, March 23, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-Downloader.Java.OpenConnection.du
   •  F-Secure: Trojan-Downloader.Java.OpenConnection.du
   •  Sophos: Troj/JavaBz-S
   •  GData: Java:Agent-DS
   •  DrWeb: Java.Downloader.204


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows Server 2008
   • Windows 7


Side effects:
   • Downloads a file
   • Lowers security settings
   • Makes use of software vulnerability
      •  CVE-2010-0840

 Files It tries to download a file:

– The location is the following:
   • %given parameter%
It is saved on the local hard drive under: %TEMPDIR\%random numbers%.exe Furthermore this file gets executed after it was fully downloaded.



It tries to execute the following files:

– Filename:
   • overhead.class
The file contains malicious code. Detected as: JAVA/Exdoer.R


– Filename:
   • thas.class
The file contains malicious code. Detected as: JAVA/Exdoer.Q

 File details Programming language:
 • Java


Encryption:
Encrypted - The virus code inside the file is encrypted.

Description inserted by Alexander Bauer on Monday, March 28, 2011
Description updated by Alexander Bauer on Monday, March 28, 2011

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