ALIASES:

TrojanDropper:Win32/Delfsnif.A (Microsoft); W32/Autorun.worm.g (McAfee); W32.Versie.A (Symantec); Backdoor.Win32.Hupigon.myd (Kaspersky); BehavesLike.Win32.Malware.eah (mx-v) (Sunbelt); Found Win32/DH{CwkDJw} (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 305,152 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 29 May 2013

Arrival Details

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

Installation

This backdoor drops the following copies of itself into the affected system:

  • %Program Files%\Common Files\Microsoft Shared\MSINFO\winlive.exe
  • %System Root%\winlive.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Dropping Routine

This backdoor drops the following files:

  • %System Root%\AutoRun.inf
  • %Program Files%\Common Files\Microsoft Shared\MSINFO\Delet.bat
  • %System%\_winlive.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %System% is the Windows system folder, which is usually C:\Windows\System32.)

Other Details

This backdoor connects to the following possibly malicious URL:

  • http://dayak.{BLOCKED}j.com/ip.txt

It deletes itself after execution.

This report is generated via an automated analysis system.

  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

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System Root%\AutoRun.inf
  • %Program Files%\Common Files\Microsoft Shared\MSINFO\Delet.bat
  • %System%\_winlive.exe

Step 3

Scan your computer with your Trend Micro product to delete files detected as BKDR_HUPIGON.QKK. 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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