TSPY_ZBOT.ISA

October 08, 2012
 Analysis by: JasperM
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This spyware may be dropped by other malware.

It creates folders where it drops its files.

It attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data. It attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.

  TECHNICAL DETAILS

File Size:

136,168 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

03 Aug 2010

Payload:

Downloads files

Arrival Details

This spyware may be dropped by other malware.

It may be downloaded from the following remote sites:

  • http://{BLOCKED}s.ru/bot2.exe

Installation

This spyware drops the following files:

  • %Application Data%\{random1}\{random}.exe - copy of itself
  • %Application Data%\{random2}\{random}.{3 random alpha character extension name} - encrypted file

(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.)

It is injected into the following processes running in memory:

  • ctfmon.exe
  • dwm.exe
  • explorer.exe
  • rdpclip.exe
  • taskeng.exe
  • taskhost.exe
  • wscntfy.exe

Information Theft

This spyware monitors the Internet Explorer (IE) activities of the affected system, specifically the address bar or title bar. It recreates a legitimate website with a spoofed login page if a user visits banking sites with the following strings in the address bar or title bar:

  • htt*://*cse*javascriptz/index.php*
  • http://qsponik.com/adm/index.php
  • htt*://*cse*javascriptz/home.js
  • http://qsponik.com/adm/home.js
  • htt*://*bper*javascriptz/index.php*
  • http://qsponik.com/adm/index.php
  • https://www.linksimprese.sanpaoloimi.com*InfoCCServlet*
  • *www.linksimprese.sanpaoloimi.com/pmiweb/LoggingServlet
  • https://www.linksimprese.sanpaoloimi.com/pmiweb/InfoCCServlet
  • *linksimprese.sanpaoloimi.com/pmiweb*Main*
  • *www.linksimprese.sanpaoloimi.com/pmiweb/B*
  • *www.linksimprese.sanpaoloimi.com/pmiweb/E*
  • *www.linksimprese.sanpaoloimi.com/pmiweb/bonsct/*
  • https://www.linksimprese.sanpaoloimi.com/pmiweb/PresentServlet
  • *www.linksimprese.sanpaoloimi.com/pmiweb/InformativaContoServlet*
  • https://*.businesswaybnl.it*list*
  • https://www.bpmbanking.it/*wbOnetoone/HomePrivata*
  • https://corporate.bpergroup.net/*
  • https://corporate.bpergroup.net*posizione*
  • https://homebanking.bpergroup.net/*/run*
  • */HBNET/CONFIGCSS.NSF/risorse/CDN-STYLEDATI/$FILE/Styledati.css?*
  • https://hbnet*.cedacri.it/HBNET/CONFIG.NSF/risorse/*-MSGALERTLOGON/$FILE/msgalertlogon.html
  • https://hbnet*.cedacri.it/*/HOME.NSF/*?CreateDocument&Login=1
  • https://www.gruppocarige.it/vbank/*
  • *.gruppocarige.it/vbank/*
  • *ib.cim-italia.it/eb/*
  • https://ib.cim-italia.it/*
  • *.cim-italia.it/*
  • *.businesswaybnl.it/newcorporate/webcontoc/login/login*
  • https://www.csebanking.it/ibportal/home-LISTA_MOVIMENTI.do*
  • https://www.csebanking.it/ibportal/*Logon.html
  • https://*.bancopopolare.it/WEBHT/cc/*
  • *.bancopopolare.it/WEBHT/cc/*
  • https://*.bancopopolare.it/WEBHT/cc/movimentiConto*
  • *.bancopopolare.it*movimentiConto*

It attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data.

It attempts to access a website to download a file which contains information where the Trojan can download an updated copy of itself, and where to send its stolen data. This configuration file also contains the following list of targeted bank-related websites from which it steals information:

  • http://{BLOCKED}a.ru/2b.bin
  • http://{BLOCKED}s.ru/2a.bin
  • http://{BLOCKED}q.ru/2c.bin
  • http://{BLOCKED}w.ru/2d.bin

It attempts to steal information from the following banks and/or other financial institutions:

  • ANZ
  • Gruppo Carige
  • Microsoft
  • Myspace
  • Odnoklassniki
  • Qui UBI
  • SEB
  • Vkontakte

Stolen Information

This spyware sends the gathered information via HTTP POST to the following URL:

  • http://{BLOCKED}s.ru/abc.php

Variant Information

This spyware has the following MD5 hashes:

  • 31bbeacab85fe6a4af76e7f6843b87f2

It has the following SHA1 hashes:

  • 8ab7232e0ce36d8156feccfe96803284736c53c9

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

7.363.80

VSAPI OPR PATTERN Date:

04 Aug 2010

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

Scan your computer with your Trend Micro product and note files detected as TSPY_ZBOT.ISA

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

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