TROJ_WARSPY.A


 ALIASES:

TrojanDownloader:Win32/WarSpy (Microsoft); MultiDropper-NY (McAfee); Trojan-Downloader.Win32.WarSpy.d (Kaspersky); Trojan.FakeAlert (Sunbelt); Dropped:Trojan.Generic.1714021 (FSecure)

 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:

125,440 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

28 Nov 2011

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.

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Internet Connection Update and HomeP KB234087

HKEY_CLASSES_ROOT\CLSID\{D56A1203-1452-EBA1-7294-EE3377770000}\
InProcServer32

HKEY_CLASSES_ROOT\Serch_hook.transURL.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Serch_hook.transURL.1\CLSID

HKEY_CLASSES_ROOT\Serch_hook.transURL

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Serch_hook.transURL\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Serch_hook.transURL\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}\TypeLib

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Internet Connection Update and HomeP KB234087
DisplayName = "Internet Connection Update and HomeP KB234087"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Internet Connection Update and HomeP KB234087
UninstallString = "%System%\guninst.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D56A1203-1452-EBA1-7294-EE3377770000}\InProcServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
SharedTaskScheduler
{D56A1203-1452-EBA1-7294-EE3377770000} = "Interlinking Memory Support"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}\TypeLib
Version = "1.0"

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = "http://www.{BLOCKED}ers.info/ad0352"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome.)

Dropping Routine

This Trojan drops the following files:

  • %System%\param32.dll
  • %System%\searchdll.dll
  • %System%\guninst.exe
  • %System%\popup_bl.dll
  • %System%\Air Tickets.ico
  • %System%\Online Betting.ico
  • %System%\BlackJack.ico
  • %System%\Car Insurance.ico
  • %System%\Cruises.ico
  • %System%\Remove Spyware.ico
  • %System%\Cheap Cigarettes.ico
  • %System%\Phentermine.ico
  • %System%\Online Casino.ico
  • %System%\Viagra.ico
  • %System%\MP3.ico
  • %System%\Party Poker.ico
  • %System%\Credit Card.ico
  • %System%\Pharmacy.ico
  • %System%\Currency Trading.ico
  • %System%\Britney Spears.ico
  • %System%\Big Tits.ico
  • %System%\Pornstars.ico
  • %System%\Lesbian Sex.ico
  • %System%\Oral Sex.ico
  • %Desktop%\Air Tickets.url
  • %Desktop%\Online Betting.url
  • %Desktop%\BlackJack.url
  • %Desktop%\Car Insurance.url
  • %Desktop%\Cruises.url
  • %Desktop%\Remove Spyware.url
  • %Desktop%\Cheap Cigarettes.url
  • %Desktop%\Phentermine.url
  • %Desktop%\Online Casino.url
  • %Desktop%\Viagra.url
  • %Desktop%\MP3.url
  • %Desktop%\Party Poker.url
  • %Desktop%\Credit Card.url
  • %Desktop%\Pharmacy.url
  • %Desktop%\Currency Trading.url
  • %Desktop%\Britney Spears.url
  • %Desktop%\Big Tits.url
  • %Desktop%\Pornstars.url
  • %Desktop%\Lesbian Sex.url
  • %Desktop%\Oral Sex.url

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://www.{BLOCKED}ers.info/pc/loader.exe
  • http://dark.{BLOCKED}eyourpockets.com/gate.php?uid=ad0352

This report is generated via an automated analysis system.

  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

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
    • Internet Connection Update and HomeP KB234087
  • In HKEY_CLASSES_ROOT\CLSID\{D56A1203-1452-EBA1-7294-EE3377770000}
    • InProcServer32
  • In HKEY_CLASSES_ROOT
    • Serch_hook.transURL.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Serch_hook.transURL.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • Serch_hook.transURL
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Serch_hook.transURL
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Serch_hook.transURL
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{C7EDAB21-D7F9-11D8-BA48-C79B0C409D70}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}
    • TypeLib

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\Internet Connection Update and HomeP KB234087
    • DisplayName="Internet Connection Update and HomeP KB234087"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Internet Connection Update and HomeP KB234087
    • UninstallString="%System%\guninst.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D56A1203-1452-EBA1-7294-EE3377770000}\InProcServer32
    • ThreadingModel="Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler
    • {D56A1203-1452-EBA1-7294-EE3377770000}="Interlinking Memory Support"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C7EDAB2E-D7F9-11D8-BA48-C79B0C409D70}\InprocServer32
    • ThreadingModel="Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C7EDAB2D-D7F9-11D8-BA48-C79B0C409D70}\TypeLib
    • Version="1.0"

Step 4

Restore this modified 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\Internet Explorer\Main
    • From: Start Page="http://www.{BLOCKED}ers.info/ad0352"
      To: Start Page=http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome

Step 5

Search and delete these files

[ Learn More ]
There may be some component files 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.
  • %System%\param32.dll
  • %System%\searchdll.dll
  • %System%\guninst.exe
  • %System%\popup_bl.dll
  • %System%\Air Tickets.ico
  • %System%\Online Betting.ico
  • %System%\BlackJack.ico
  • %System%\Car Insurance.ico
  • %System%\Cruises.ico
  • %System%\Remove Spyware.ico
  • %System%\Cheap Cigarettes.ico
  • %System%\Phentermine.ico
  • %System%\Online Casino.ico
  • %System%\Viagra.ico
  • %System%\MP3.ico
  • %System%\Party Poker.ico
  • %System%\Credit Card.ico
  • %System%\Pharmacy.ico
  • %System%\Currency Trading.ico
  • %System%\Britney Spears.ico
  • %System%\Big Tits.ico
  • %System%\Pornstars.ico
  • %System%\Lesbian Sex.ico
  • %System%\Oral Sex.ico
  • %Desktop%\Air Tickets.url
  • %Desktop%\Online Betting.url
  • %Desktop%\BlackJack.url
  • %Desktop%\Car Insurance.url
  • %Desktop%\Cruises.url
  • %Desktop%\Remove Spyware.url
  • %Desktop%\Cheap Cigarettes.url
  • %Desktop%\Phentermine.url
  • %Desktop%\Online Casino.url
  • %Desktop%\Viagra.url
  • %Desktop%\MP3.url
  • %Desktop%\Party Poker.url
  • %Desktop%\Credit Card.url
  • %Desktop%\Pharmacy.url
  • %Desktop%\Currency Trading.url
  • %Desktop%\Britney Spears.url
  • %Desktop%\Big Tits.url
  • %Desktop%\Pornstars.url
  • %Desktop%\Lesbian Sex.url
  • %Desktop%\Oral Sex.url

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_WARSPY.A. 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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