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TROJ_VUNDO.GBC

May 15, 2013
 Analysis by: Christopher Talampas
 ALIASES:

TrojanDownloader:Win32/Vundo.J (Microsoft), Virus.Win32.Vundo (Ikarus)

 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:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

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

  TECHNICAL DETAILS

File Size:

51,712 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

04 Mar 2013

Arrival Details

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

Other Details

This Trojan connects to the following possibly malicious URL:

  • {BLOCKED}zip.com/phpbb/get.php?id={Value}
  • {BLOCKED}ast.com/phpbb/get.php?id={Value}
  • {BLOCKED}g1etag.com/phpbb/get.php?id={Value}
  • {BLOCKED}all.com/phpbb/get.php?id={Value}
  • {BLOCKED}all.com/phpbb/get.php?id={Value}
  • {BLOCKED}nda.com/phpbb/get.php?id={Value}
  • {BLOCKED}mva.com/phpbb/get.php?id={Value}
  • {BLOCKED}ix.com/phpbb/get.php?id={Value}
  • {BLOCKED}od.com/phpbb/get.php?id={Value}
  • {BLOCKED}rns.com/phpbb/get.php?id={Value}
  • {BLOCKED}zip.com/phpbb/get.php?id={Value}
  • {BLOCKED}it.com/phpbb/get.php?id={Value}
  • {BLOCKED}ets.com/phpbb/get.php?id={Value}
  • {BLOCKED}su.com/phpbb/get.php?id={Value}
  • {BLOCKED}des.com/phpbb/get.php?id={Value}
  • {BLOCKED}ns.com/phpbb/get.php?id={Value}
  • {BLOCKED}ck.com/phpbb/get.php?id={Value}
  • {BLOCKED}ad.com/phpbb/get.php?id={Value}
  • {BLOCKED}ra.com/phpbb/get.php?id={Value}
  • {BLOCKED}s.su/phpbb/get.php?id={Value}
  • {BLOCKED}s.su/phpbb/get.php?id={Value}
  • {BLOCKED}click.com/phpbb/get.php?id={Value}
  • {BLOCKED}eta.ru/phpbb/get.php?id={Value}
  • {BLOCKED}e1.com/phpbb/get.php?id={Value}
  • {BLOCKED}ans.ru/phpbb/get.php?id={Value}
  • {BLOCKED}.{BLOCKED}.35.154/phpbb/get.php?id={Value}
  • www.{BLOCKED}x.ru/
  • {BLOCKED}zip.com/phpbb/post.php?id={Value}
  • {BLOCKED}su.com/phpbb/get.php?id={Value}
  • {BLOCKED}su.com/phpbb/get.php?id={Value}
  • {BLOCKED}ans.ru/phpbb/get.php?id={Value}

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

  SOLUTION

Minimum Scan Engine:

9.300

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 TROJ_VUNDO.GBC. 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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