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Threat Encyclopedia

JAVA_EXPLOIT.ABC

ANALYSIS BY

Alvin Bacani


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: No

  • In the wild: Yes

OVERVIEW


This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. 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:

9,317 bytes

File Type:

JAR

Initial Samples Received Date:

27 Aug 2013

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

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

Other Details

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

It is a zero-day exploit for the following vulnerability:

More information on this vulnerability can be found below:

NOTES:

The malware uses the following parameter supplied by its component to be able to extract and execute the embedded executable on the Java file.

  • exec
  • xkey

It then used the value from the parameter to access a possible malicious URL to download and execute possible malicious files on the affected system.

SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.242.06

FIRST VSAPI PATTERN DATE:

27 Aug 2013

VSAPI OPR PATTERN File:

10.243.00

VSAPI OPR PATTERN Date:

28 Aug 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

Scan your computer with your Trend Micro product to delete files detected as JAVA_EXPLOIT.ABC. 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.


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