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BAT_QHOST.QFB

June 18, 2013
 Analysis by: Rhena Inocencio
 ALIASES:

TrojanProxy:BAT/Bankorde.A (Microsoft), BAT/Qhost.NCM trojan (NOD32)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware


This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

3,573 bytes

File Type:

BAT

Memory Resident:

No

Initial Samples Received Date:

23 May 2013

Payload:

Connects to URLs/IPs

Arrival Details

This Trojan may be dropped by the following malware:

  • TSPY_QHOST

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
DNScachEtiMEOut = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
SERvERiNFOtiMEOut = "0"

NOTES:

It overwrites the system's HOSTS files to redirect users to {BLOCKED}.{BLOCKED}.236.35 once the following website(s) are accessed:

  • BaNKiNG.NONGhYUp.cOM
  • WWW.BaNKiNG.NOnGhyUp.cOM
  • NoNGhYup.cOM
  • ibz.nonghyup.com
  • WWW.NoNghyUp.cOM
  • WOOriBANK.coM
  • WWW.WOoRiBAnK.cOM
  • piB.WOOriBaNk.cOM
  • sPD.WoORiBaNK.cOM
  • U.WOORiBanK.cOM
  • pot.wooribank.com
  • WOOriBANK.coM
  • OBaNK.KBStaR.cOM
  • WWW.KBStaR.cOM
  • KBStaR.cOM
  • ObiZ.KbStaR.cOm
  • WWW.ShiNhaN.coM
  • BaNKiNg.SHiNHAN.cOM
  • bIZBanK.ShinhaN.cOm
  • easy.Shinhan.CoM
  • OpEn.Shinhan.CoM
  • WWW.KeB.CO.Kr
  • baNK.KEb.cO.kR
  • fx.KeB.CO.Kr
  • WWW.StaNdarDChartErED.cO.KR
  • Www.IbK.co.kR
  • MyBanK.ibK.CO.Kr
  • KIUP.ibK.CO.kR
  • open.ibK.CO.kR
  • haNABank.cOM
  • WwW.hanaBANk.coM
  • corp.hanaBANk.coM
  • www.keb.co.kr
  • bank.keb.co.kr
  • fx.keb.co.kr
  • ebank.keb.co.kr
  • online.keb.co.kr

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.934.07

FIRST VSAPI PATTERN DATE:

22 May 2013

VSAPI OPR PATTERN File:

9.935.00

VSAPI OPR PATTERN Date:

22 May 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Remove the malware/grayware file dropped/downloaded by BAT_QHOST.QFB

    • TSPY_QHOST

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
    • DNScachEtiMEOut = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
    • SERvERiNFOtiMEOut = "0"

Step 4

Remove these strings added by the malware/grayware/spyware in the HOSTS file

[ Learn More ]
    • {BLOCKED}.{BLOCKED}.236.35 BaNKiNG.NONGhYUp.cOM
    • {BLOCKED}.{BLOCKED}.236.35 WWW.BaNKiNG.NOnGhyUp.cOM
    • {BLOCKED}.{BLOCKED}.236.35 NoNGhYup.cOM
    • {BLOCKED}.{BLOCKED}.236.35 ibz.nonghyup.com
    • {BLOCKED}.{BLOCKED}.236.35 WWW.NoNghyUp.cOM
    • {BLOCKED}.{BLOCKED}.236.35 WOOriBANK.coM
    • {BLOCKED}.{BLOCKED}.236.35 WWW.WOoRiBAnK.cOM
    • {BLOCKED}.{BLOCKED}.236.35 piB.WOOriBaNk.cOM
    • {BLOCKED}.{BLOCKED}.236.35 sPD.WoORiBaNK.cOM
    • {BLOCKED}.{BLOCKED}.236.35 U.WOORiBanK.cOM
    • {BLOCKED}.{BLOCKED}.236.35 pot.wooribank.com
    • {BLOCKED}.{BLOCKED}.236.35 WOOriBANK.coM
    • {BLOCKED}.{BLOCKED}.236.35 OBaNK.KBStaR.cOM
    • {BLOCKED}.{BLOCKED}.236.35 WWW.KBStaR.cOM
    • {BLOCKED}.{BLOCKED}.236.35 KBStaR.cOM
    • {BLOCKED}.{BLOCKED}.236.35 ObiZ.KbStaR.cOm
    • {BLOCKED}.{BLOCKED}.236.35 WWW.ShiNhaN.coM
    • {BLOCKED}.{BLOCKED}.236.35 BaNKiNg.SHiNHAN.cOM
    • {BLOCKED}.{BLOCKED}.236.35 bIZBanK.ShinhaN.cOm
    • {BLOCKED}.{BLOCKED}.236.35 easy.Shinhan.CoM
    • {BLOCKED}.{BLOCKED}.236.35 OpEn.Shinhan.CoM
    • {BLOCKED}.{BLOCKED}.236.35 WWW.KeB.CO.Kr
    • {BLOCKED}.{BLOCKED}.236.35 baNK.KEb.cO.kR
    • {BLOCKED}.{BLOCKED}.236.35 fx.KeB.CO.Kr
    • {BLOCKED}.{BLOCKED}.236.35 WWW.StaNdarDChartErED.cO.KR
    • {BLOCKED}.{BLOCKED}.236.35 Www.IbK.co.kR
    • {BLOCKED}.{BLOCKED}.236.35 MyBanK.ibK.CO.Kr
    • {BLOCKED}.{BLOCKED}.236.35 KIUP.ibK.CO.kR
    • {BLOCKED}.{BLOCKED}.236.35 open.ibK.CO.kR
    • {BLOCKED}.{BLOCKED}.236.35 haNABank.cOM
    • {BLOCKED}.{BLOCKED}.236.35 WwW.hanaBANk.coM
    • {BLOCKED}.{BLOCKED}.236.35 corp.hanaBANk.coM
    • {BLOCKED}.{BLOCKED}.236.35 www.keb.co.kr
    • {BLOCKED}.{BLOCKED}.236.35 bank.keb.co.kr
    • {BLOCKED}.{BLOCKED}.236.35 fx.keb.co.kr
    • {BLOCKED}.{BLOCKED}.236.35 ebank.keb.co.kr
    • {BLOCKED}.{BLOCKED}.236.35 online.keb.co.kr
"

Step 5

Scan your computer with your Trend Micro product to delete files detected as BAT_QHOST.QFB 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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