Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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

This backdoor may be dropped by other malware. It arrives as a component bundled with malware/grayware packages. It may be unknowingly downloaded by a user while visiting malicious websites.

It connects to a website to send and receive information.

It sends the information it gathers to remote sites.

It prevents users from visiting antivirus-related websites that contain specific strings.

  TECHNICAL DETAILS

File Size: 194,560 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 04 Oct 2012
Payload: Compromises system security, Connects to URLs/IPs, Steals information, Terminates processes

Arrival Details

This backdoor may be dropped by other malware.

It arrives as a component bundled with malware/grayware packages.

It may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This backdoor injects codes into the following process(es):

  • iexplore.exe
  • outlook.exe
  • firefox.exe
  • opera.exe
  • skype.exe
  • msnmsgr.exe
  • yahoomessenger.exe
  • msmsgs.exe
  • wscntfy.exe
  • wuauclt.exe

Backdoor Routine

This backdoor connects to the following websites to send and receive information:

  • {BLOCKED}.{BLOCKED}.239.145:8080
  • {BLOCKED}istr.in
  • {BLOCKED}vtkn.in.ua
  • {BLOCKED}uytdk.info
  • {BLOCKED}asudskfoe.org
  • {BLOCKED}iakfuuasd.net
  • {BLOCKED}s.{BLOCKED}v.ua
  • {BLOCKED}m.{BLOCKED}v.ua
  • {BLOCKED}n.org
  • {BLOCKED}nz.net
  • {BLOCKED}mausj.org

Process Termination

This backdoor terminates the following services if found on the affected system:

  • msdev.exe
  • dbgview.exe
  • mirc.exe
  • ollydbg.exe
  • ctfmon.exe

Information Theft

This backdoor 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:

  • .web-access.com
  • .webcashmgmt.com
  • /achupload
  • /cashman/
  • /cashplus/
  • /clkccm/
  • /cmserver/
  • /corpach/
  • /ibws/
  • /payments/ach
  • /stbcorp/
  • /wcmpr/
  • /wcmpw/
  • /wcmtr/
  • /wires/
  • /wiret
  • access.jpmorgan.com
  • accessonline.abnamro.com
  • achbatchlisting
  • business-eb.ibanking-services.com
  • businessaccess.citibank.citigroup.com
  • businessbankingcenter.synovus.com
  • businessinternetbanking.synovus.com
  • businessonline.huntington.com
  • businessonline.tdbank.com
  • cashproonline.bankofamerica.com
  • cbs.firstcitizensonline.com
  • chsec.wellsfargo.com
  • commercial.bnc.ca
  • commercial.wachovia.com
  • commercial2.wachovia.com
  • commercial3.wachovia.com
  • commercial4.wachovia.com
  • corporatebanking
  • cpw-achweb.bankofamerica.com
  • directline4biz.com
  • directpay.wellsfargo.com
  • e-facts.org
  • e-moneyger.com
  • each.bremer.com
  • ebanking-services.com
  • express.53.com
  • firstmeritib.com
  • firstmeritib.com/defaultcorp.aspx
  • goldleafach.com
  • iachwellsprod.wellsfargo.com
  • ibc.klikbca.com
  • iris.sovereignbank.com
  • itreasury.regions.com
  • itreasurypr.regions.com
  • jsp/mainWeb.jsp
  • ktt.key.com
  • moneymanagergps.com
  • netconnect.bokf.com
  • nj00-wcm
  • ocm.suntrust.com
  • onlineserv/CM
  • otm.suntrust.com
  • paylinks.cunet.org
  • premierview.membersunited.org
  • providentnjolb.com
  • scotiaconnect.scotiabank.com
  • securentrycorp.amegybank.com
  • singlepoint.usbank.com
  • svbconnect.com
  • tcfexpressbusiness.com
  • tmconnectweb
  • treas-mgt.frostbank.com
  • treasury.pncbank.com
  • trz.tranzact.org
  • tssportal.jpmorgan.com
  • ub-businessonline.blilk.com
  • wc.wachovia.com
  • wcp.wachovia.com
  • web-cashplus.com
  • webexpress.tdbank.com
  • wellsoffice.wellsfargo.com

It sends the information it gathers to remote sites.

Other Details

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

  • Connects to a certain IRC server using a certain port and joins a channel where it receives commands from a malicious user. It sends the following information to its C&C server:
    • ext_ip
    • dnsname
    • hostname
    • country
    • state
    • city
    • user
    • domain
    • is_admin
    • os
    • time
    • qbot_version
    • install_time

It prevents users from visiting antivirus-related websites that contain the following strings:

  • .eset
  • agnitum
  • ahnlab
  • arcabit
  • avast
  • avg
  • avira
  • avp
  • bit9
  • bitdefender
  • castlecops
  • centralcommand
  • clamav
  • clearclouddns
  • comodo
  • computerassociates
  • cpsecure
  • defender
  • drweb
  • emsisoft
  • esafe
  • etrust
  • ewido
  • explabs.
  • f-prot
  • f-secure
  • fortinet
  • gdata
  • grisoft
  • hacksoft
  • hauri
  • hautesecure.com
  • ikarus
  • jotti
  • k7computing
  • kaspersky
  • malware
  • mc
  • phishtank.com
  • sanasecurity
  • truste.com
  • webroot.

NOTES:

It is also capable of the following:

  • Download/upload files
  • Create/delete/modify files
  • Use a list of usernames and passwords for bruteforce attacks
  • Create/terminate processes

  SOLUTION

Minimum Scan Engine: 9.200

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 to delete files detected as BKDR_QBOT.DHB. 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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