TROJ_QBOTCONF.AX

October 08, 2012
 Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan may arrive bundled with malware packages as a malware component. It may be downloaded by other malware/grayware/spyware from remote sites.

It connects to certain URLs. It may do this to remotely inform a malicious user of its installation. It may also do this to download possibly malicious files onto the computer, which puts the computer at a greater risk of infection by other threats.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

20 Oct 2010

Payload:

Compromises system security, Connects to URLs/Ips

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It may be downloaded by other malware/grayware/spyware from remote sites.

Installation

This Trojan creates the following folders:

  • %system Root%\All Users\_qbothome

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

  • ~sasg2136ggvsdswin

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{Random Name} = %System Root%\Documents And Settings\All Users\_qbothome\_qbotinj.exe', '%System Root%\Documents And Settings\All Users\_qbothome\_qbot.dll, /c {Random application name}

Download Routine

This Trojan connects to the following malicious URLs:

  • http://{BLOCKED}6.in/1
  • http://{BLOCKED}ver.com.ua/cgi-bin/ss.pl
  • http://www.{BLOCKED}cdc2121cdsfdfd.com
  • http://{BLOCKED}6.in/{BLOCKED}in/jl/jloader.pl?r=q
  • http://{BLOCKED}6.in/{BLOCKED}in/jl/jloader.pl?
  • http://{BLOCKED}2.cn/{BLOCKED}n/jl/jloader.pl?r=3d
  • http://{BLOCKED}er.com.ua/cgi-bin/exhandler4.pl
  • http://{BLOCKED}thewhistle.com/cgi-bin/clientinfo3.pl
  • {BLOCKED}rv.co.in
  • {BLOCKED}4.cn
  • {BLOCKED}1.co.in
  • {BLOCKED}02.co.in
  • {BLOCKED}03.in
  • {BLOCKED}3.com.ua

Other Details

This Trojan does the following:

  • It avoids injecting itself from the following processes:
    • msdev.exe
    • dbgview.exe
    • mirc.exe
    • ollydbg.exe
    • ccApp.exe
    • skype
    • R&Q.exe
    • photoed
    • outlook.exe
    • mmc.exe
    • ctfmon.exe
    • cmd.exe
    • far.exe
    • nc.exe
  • The following component files are referenced in its code:
    • alias__qbotnti.exe
    • _qbotinj.exe
    • _qbotnti.exe
    • alias__qbotinj.exe
    • _qbot.dll
    • alias__qbot.dll
  • Upon execution, it sends the following information to inform the remote host of the infection:
    • Ext_ip
    • DNS name
    • Host name
    • Country
    • State
    • City
    • User
    • Domain
    • IS admin
    • OS
    • Time
    • Qbot_version
    • Install_time
  • It also monitors affected users' browsing habits specifically on websites that contains any of the following strings:
    • netconnect.bokf.com
    • business-eb.ibanking-services.com
    • cashproonline.bankofamerica.com
    • /cashplus/
    • ebanking-services.com
    • /cashman/
    • web-cashplus.com
    • treas-mgt.frostbank.com
    • business-eb.ibanking-services.com
    • treasury.pncbank.com
    • access.jpmorgan.com
    • ktt.key.com
    • onlineserv/CM
    • premierview.membersunited.org
    • directline4biz.com
    • onb.webcashmgmt.com
    • tmconnectweb
    • moneymanagergps.com
    • ibc.klikbca.com
    • directpay.wellsfargo.com
    • express.53.com
    • itreasury.regions.com
    • itreasurypr.regions.com
    • cpw-achweb.bankofamerica.com
    • businessaccess.citibank.citigroup.com
    • businessonline.huntington.com
  • It searches for information from the following registry key:

    HKEY_CURRENT_USER\Software\Microsoft
    Internet Account Manager\Accounts,

  • The said information includes the following:
    • Internet Explorer AutoComplete passwords
    • Internet Explorer Password-protected sites
    • Outlook Express passwords

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

07.554.02

VSAPI PATTERN Date:

20 Oct 2010

VSAPI PATTERN Date:

10/20/2010 12:00:00 AM

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

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • {Random Name}='%System Root%\Documents And Settings\All Users\_qbothome\_qbotinj.exe', '%System Root%\Documents And Settings\All Users\_qbothome\_qbot.dll', /c {Random application name}

Step 4

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %system Root%\All Users\_qbothome

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_QBOTCONF.AX. 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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