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BKDR_HUPIGON.DAJ

May 14, 2013
 ALIASES:

Hacktool.Rootkit (Symantec); Backdoor.Win32.Prosti.go (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan horse PSW.Generic6.ARE (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.

  TECHNICAL DETAILS

File Size:

1,159,376 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

14 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.

Dropping Routine

This backdoor drops the following files:

  • %User Temp%\s20070615093411_32_0OWJ8D.jpg
  • %User Temp%\×ÀÃæ11.zp.exe
  • %Program Files%\common files\microsoft shared\msinfo\¸´¼þ qq.jpg
  • %Windows%\uninstal.bat
  • %Windows%\qq.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %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).. %Windows% is the Windows folder, which is usually C:\Windows.)

Other Details

This backdoor connects to the following possibly malicious URL:

  • http://6879.{BLOCKED}i.net/ip.txt

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.
  • %User Temp%\s20070615093411_32_0OWJ8D.jpg
  • %User Temp%\×ÀÃæ11.zp.exe
  • %Program Files%\common files\microsoft shared\msinfo\¸´¼þ qq.jpg
  • %Windows%\uninstal.bat
  • %Windows%\qq.exe

Step 3

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