arrow_back
search
close

TROJ_QHOST.RCC

May 10, 2013
 ALIASES:

Trojan:BAT/Qhost.AF (Microsoft); Agent-FBH!67CB48A2CE1C (McAfee); Trojan.ADH (Symantec); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Startpage.TUH (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

244,857 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

08 May 2013

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

  • %User Temp%\$inst
  • %Program Files%\tokom kak neer delat
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\$inst\0.tmp
  • %User Temp%\$inst\1.tmp
  • %User Temp%\$inst\2.tmp
  • %User Temp%\$inst\3.tmp
  • %User Temp%\$inst\4.tmp
  • %User Temp%\$inst\5.tmp
  • %User Temp%\$inst\6.tmp
  • %User Temp%\$inst\7.tmp
  • %User Temp%\$inst\8.tmp
  • %User Temp%\$inst\9.tmp
  • %User Temp%\$inst\10.tmp
  • %User Temp%\$inst\11.tmp
  • %User Temp%\$inst\12.tmp
  • %User Temp%\$inst\13.tmp
  • %User Temp%\$inst\14.tmp
  • %User Temp%\$inst\15.tmp
  • %User Temp%\$inst\16.tmp
  • %User Temp%\$inst\17.tmp
  • %User Temp%\$inst\20.tmp
  • %User Temp%\$inst\50.tmp
  • %User Temp%\$inst\21.tmp
  • %User Temp%\$inst\51.tmp

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ne glad ego kisto4koi potomu 4to on ebanet

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ne glad ego kisto4koi potomu 4to on ebanet
DisplayName = "ne glad ego kisto4koi potomu 4to on ebanet"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ne glad ego kisto4koi potomu 4to on ebanet
DisplayIcon = "%Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ne glad ego kisto4koi potomu 4to on ebanet
UninstallString = "%Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ne glad ego kisto4koi potomu 4to on ebanet
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ne glad ego kisto4koi potomu 4to on ebanet
NoRepair = "1"

Dropping Routine

This Trojan drops the following files:

  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\svezee_techenie_cheloveko.bat
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\xranilise_vsei_figni_tut.bok
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\slooooowthespeedafer.cross
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\nu kak bi vsua hernya.fos
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.exe
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.ini
  • slooooowthespeedafer.vbs

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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

Delete this registry key

[ 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\Uninstall
    • ne glad ego kisto4koi potomu 4to on ebanet

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\Uninstall\ne glad ego kisto4koi potomu 4to on ebanet
    • DisplayName = "ne glad ego kisto4koi potomu 4to on ebanet"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ne glad ego kisto4koi potomu 4to on ebanet
    • DisplayIcon = "%Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ne glad ego kisto4koi potomu 4to on ebanet
    • UninstallString = "%Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ne glad ego kisto4koi potomu 4to on ebanet
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ne glad ego kisto4koi potomu 4to on ebanet
    • NoRepair = "1"

Step 4

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\svezee_techenie_cheloveko.bat
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\xranilise_vsei_figni_tut.bok
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\slooooowthespeedafer.cross
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\nu kak bi vsua hernya.fos
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.exe
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi\Uninstall.ini
  • slooooowthespeedafer.vbs

Step 5

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.
  • %User Temp%\$inst
  • %Program Files%\tokom kak neer delat
  • %Program Files%\tokom kak neer delat\ne glad ego kisto4koi

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_QHOST.RCC. 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.

Step 7

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %User Temp%\$inst\0.tmp
  • %User Temp%\$inst\1.tmp
  • %User Temp%\$inst\2.tmp
  • %User Temp%\$inst\3.tmp
  • %User Temp%\$inst\4.tmp
  • %User Temp%\$inst\5.tmp
  • %User Temp%\$inst\6.tmp
  • %User Temp%\$inst\7.tmp
  • %User Temp%\$inst\8.tmp
  • %User Temp%\$inst\9.tmp
  • %User Temp%\$inst\10.tmp
  • %User Temp%\$inst\11.tmp
  • %User Temp%\$inst\12.tmp
  • %User Temp%\$inst\13.tmp
  • %User Temp%\$inst\14.tmp
  • %User Temp%\$inst\15.tmp
  • %User Temp%\$inst\16.tmp
  • %User Temp%\$inst\17.tmp
  • %User Temp%\$inst\20.tmp
  • %User Temp%\$inst\50.tmp
  • %User Temp%\$inst\21.tmp
  • %User Temp%\$inst\51.tmp


Did this description help? Tell us how we did.