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JAVA_EXPLOIT.ZC

July 14, 2013
 Analysis by: Alvin Bacani
 Modified by: Rhena Inocencio
 ALIASES:

Exploit-CVE2012-1723 (McAfee)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


This is a malicious applet that downloads and executes a file infector detected as PE_EXPIRO.JX-O.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan arrives as a component bundled with malware/grayware packages. It may be hosted on a website and run when a user accesses the said website.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

14,497 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

08 Jul 2013

Payload:

Downloads files

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

It may be hosted on a website and run when a user accesses the said website.

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://{BLOCKED}riotings.net:80/white/applied_drill_facilitate.txt?e=14

It takes advantage of the following software vulnerabilities to download possibly malicious files:

Other Details

This Trojan requires its main component to successfully perform its intended routine.

NOTES:

This malware downloads another malware, detected as PE_EXPIRO.JX-O.

Another sample takes advantage of CVE-2012-1723 to download the infector PE_EXPIRO.JX-O

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.142.07

FIRST VSAPI PATTERN DATE:

08 Jul 2013

VSAPI OPR PATTERN File:

10.143.00

VSAPI OPR PATTERN Date:

08 Jul 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Remove malware/grayware files dropped/downloaded by JAVA_EXPLOIT.ZC

Step 3

Close all opened browser windows

Step 4

Scan your computer with your Trend Micro product to delete files detected as JAVA_EXPLOIT.ZC. 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 this security patch 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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