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Malware type: Trojan
Destructive: No Platform: Windows 2000, Windows XP, Windows Server 2003 Encrypted: Yes In the wild: Yes |
Low
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Infection Channel: Downloaded from the Internet
This malware is associated with a spammed fake Facebook friend confirmation.
To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.
This Trojan takes advantage of certain software vulnerabilities to download possibly malicious files.
As of this writing, it downloads and executes files which are detected TSPY_ZBOT.PEJ. As a result, malicious routines of the downloaded files are also exhibited on the affected system.
File type: JAR, Java Class
Initial samples received date: 25 Apr 2012
Payload: Downloads files
Arrival Details
This Trojan may be downloaded from the following remote sites:
- http://{BLOCKED}.{BLOCKED}.172.153/Edu.jar
- http://{BLOCKED}.{BLOCKED}.229.55/Edu.jar
Download Routine
This Trojan takes advantage of the following software vulnerabilities to download possibly malicious files:
- Oracle Java SE and Java for Business 'MixerSequencer' Remote Code Execution Vulnerability (CVE-2010-0842)
- CVE-2010-0840
- Unspecified vulnerability in the Java Runtime Environment (CVE-2011-3544)
- CVE-2012-0507
NOTES:
As of this writing, it downloads and executes the following files which are detected as TSPY_ZBOT.PEJ:
- http://{BLOCKED}tec.sk/D8aoPu86/XPVqAGE.exe
- http://{BLOCKED}erge.com/aXS0mRNT/KXj.exe
- http://{BLOCKED}rforhire.com.au/CWWrvcPe/nxp62Wk.exe
As a result, malicious routines of the downloaded files are also exhibited on the affected system.
First VSAPI Pattern File: 8.942.03
First VSAPI Pattern Release Date: 26 Apr 2012
VSAPI OPR Pattern Version: 8.943.00
VSAPI OPR Pattern Release Date: 26 Apr 2012
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 3
Close all opened browser windows
Step 4
Scan your computer with your Trend Micro product to delete files detected as JAVA_AGENT.PEJ. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
Step 5
Download and apply these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.
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