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TROJ_BUZUS.AMC

April 28, 2013
 ALIASES:

Backdoor:Win32/Hupigon.FC (Microsoft); W32/Autorun.worm.fi (McAfee); Suspicious.IRCBot (Symantec); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Dropper.Generic.AKGR (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 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.

  TECHNICAL DETAILS

File Size:

734,208 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

28 Apr 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.

Installation

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

  • %Program Files%\Common Files\Microsoft Shared\MSINFO\Se2re.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).)

Dropping Routine

This Trojan drops the following files:

  • %Program Files%\Common Files\Microsoft Shared\MSINFO\SetupWay.txt
  • %System Root%\AutoRun.inf
  • %System Root%\Se2re.exe
  • %Program Files%\Common Files\Microsoft Shared\MSINFO\_Se2re.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.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://10731.{BLOCKED}g.net/wei/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.
  • %Program Files%\Common Files\Microsoft Shared\MSINFO\SetupWay.txt
  • %System Root%\AutoRun.inf
  • %System Root%\Se2re.exe
  • %Program Files%\Common Files\Microsoft Shared\MSINFO\_Se2re.exe

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_BUZUS.AMC. 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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