Analysis by: Lord Alfred Remorin
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

This spyware may be dropped by other malware.

It executes commands from a remote malicious user, effectively compromising the affected system.

  TECHNICAL DETAILS

File Size: 139,264 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 15 Aug 2012
Payload: Connects to URLs/IPs, Compromises system security

Arrival Details

This spyware may be dropped by the following malware:

  • TROJ_MDROPPER.CD

Installation

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

  • %User Profile%\NetHood\NetHood.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

It drops the following files:

  • %User Startup%\(Empty).lnk

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)

Backdoor Routine

This spyware executes the following commands from a remote malicious user:

  • Execute command shell
  • Get system information
  • Create/terminate process
  • Download and execute other malicious files
  • Upload files to remote host

It connects to the following URL(s) to send and receive commands from a remote malicious user:

  • http://freetibb.{BLOCKED}p.biz

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 9.326.08
FIRST VSAPI PATTERN DATE: 15 Aug 2012
VSAPI OPR PATTERN File: 9.327.00
VSAPI OPR PATTERN Date: 15 Aug 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

Remove the malware/grayware file that dropped/downloaded TSPY_FLAME.M

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete this file

[ Learn More ]
There may be some component files 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 Startup%\(Empty).lnk

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_FLAME.M. 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.

Step 6

Scan your computer with your Trend Micro product to delete files detected as TSPY_FLAME.M. 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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