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TSPY_DAURSO.SMY

October 08, 2012
 Analysis by: Michael Cabel
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This spyware opens a hidden Internet Explorer window.

  TECHNICAL DETAILS

File Size:

306,688 bytes

File Type:

PE

Memory Resident:

Yes

Arrival Details

This spyware may be downloaded from the following remote site(s):

  • http://alesolo.ru/new/controller.php?action=bot&entity_list=&first=0&rnd=981633&uid=1&guid=2847846060

Installation

This spyware drops the following component file(s):

  • %System%\drivers\{Random File Name}.sys - detected as RTKT_BUBNIX.A

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

  • mutex_io

Backdoor Routine

This spyware opens a hidden Internet Explorer window.

Stolen Information

This spyware saves the stolen information in the following file:

  • %ProgramFiles%\FTP Navigator\ftplist.txt

It sends the gathered information via HTTP POST to the following URL:

  • http://95.80.200.134/good/receiver/ftp

Other Details

Based on analysis of the codes, it has the following capabilities:

  • This spyware steals sensitive FTP credentials of the following FTP client applications: CoreFTP, Ghisler, GlobalSCAPE, FileZilla, FlashFXP, SmartFTP.
  • It also searches for files inside the following user folders to look for saved FTP credentials: %Application Data%GlobalSCAPE, %Application Data%FileZilla, %Application Data%FlashFXP, %Application Data%SmartFTP

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

  SOLUTION

Minimum Scan Engine:

8.900

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 malware files dropped/downloaded by TSPY_DAURSO.SMY

    RTKT_BUBNIX.A

Step 3

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