JAVA_AGENT.KD

October 09, 2012
 Analysis by: Christopher Daniel So
 ALIASES:

Trojan.Maljava (Symantec)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan downloads a file specified in its command-line parameter and saves it as a certain file.

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

  TECHNICAL DETAILS

File Size:

2,356 bytes

File Type:

Java Class

Initial Samples Received Date:

20 Jun 2012

Payload:

Downloads files

Arrival Details

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

NOTES:

It downloads the file specified in its command-line parameter and saves it as one of the following:

  • %User Temp%\iawbluwaump.exe
  • %User Temp%\ymkdslhtpjfzjtnbuxed.exe
  • %User Temp%\bejwbkqnzillsoeewxtgdspx.exe
  • %User Temp%\rrewucxzmtawk.exe
  • %User Temp%\vszhlnlpkijqmcgjiy.exe
  • %User Temp%\muwpsvbmvy.exe
  • %User Temp%\jtpibbwmqgvaxhcerkdsxypn.exe
  • %User Temp%\kpdgnaphpyiquvhbqhzy.exe
  • %User Temp%\equhjsfygwivzoiz.exe
  • %User Temp%\ppdygytnzkvz.exe

It then executes the downloaded file.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.206.01

FIRST VSAPI PATTERN DATE:

20 Jun 2012

VSAPI OPR PATTERN File:

9.207.00

VSAPI OPR PATTERN Date:

21 Jun 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 2

Scan your computer with your Trend Micro product to delete files detected as JAVA_AGENT.KD. 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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