PE_FUJACKS.KK-O
Worm:Win32/Emerleox.gen!A (Microsoft); W32/Fujacks.az (McAfee); W32.Fujacks.CA (Symantec); Worm.Win32.Emerleox.gen.a (v) (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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
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 drops the following copies of itself into the affected system:
- %System%\drivers\TXPlatform.exe
(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.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Explorer = "%System%\drivers\TXPlatform.exe"
Other System Modifications
This Trojan deletes the following folders:
- %System Root%\autorun.inf
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AVP.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavMon.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavMonD.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavStub.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavTask.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
CCenter.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
360tray.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
360Safe.exe
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AVP.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavMon.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavMonD.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavStub.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
RavTask.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
CCenter.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
360tray.exe
Debugger = "ntsd -d"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
360Safe.exe
Debugger = "ntsd -d"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\Hidden\
SHOWALL
CheckedValue = "0"
(Note: The default value data of the said registry entry is 1.)
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoDriveTypeAutoRun = "8"
(Note: The default value data of the said registry entry is 91.)
Dropping Routine
This Trojan drops the following files:
- %System Root%\go.sys
- %Program Files%\Desk_top_.ini
- %Program Files%\Adobe\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Esl\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Desk_top_.ini
- %User Temp%\20$$.Ico
- %User Temp%\28$$.Ico
- %User Temp%\48$$.Ico
- %User Temp%\52$$.Ico
- %User Temp%\0$$.Ico
- %Program Files%\Adobe\Reader 10.0\Reader\AIR\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Browser\Desk_top_.ini
- %User Temp%\83$$.Ico
- %Program Files%\Adobe\Reader 10.0\Reader\IDTemplates\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\IDTemplates\ENU\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Javascripts\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Legal\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Legal\ENU\Desk_top_.ini
- %User Temp%\66$$.Ico
- %User Temp%\67$$.Ico
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\AcroForm\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\AcroForm\PMP\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Annotations\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Annotations\Stamps\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Annotations\Stamps\ENU\Desk_top_.ini
- %System Root%\autorun.inf
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Multimedia\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Multimedia\MPP\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins3d\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins3d\prc\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Services\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\SPPlugins\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Tracker\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\CMap\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Font\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Font\PFM\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\LanguageNames2\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Providers\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Providers\Proximity\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Providers\Proximity\11.00\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\SaslPrep\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\ICU\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\Adobe\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\Mac\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\win\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Setup Files\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Setup Files\{AC76BA86-7AD7-1033-7B44-AA0000000001}\Desk_top_.ini
- %Program Files%\Microsoft.NET\Desk_top_.ini
- %Program Files%\Microsoft.NET\RedistList\Desk_top_.ini
- %Program Files%\MSBuild\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Windows Workflow Foundation\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\Desk_top_.ini
- %Program Files%\MSN Gaming Zone\Desk_top_.ini
- %Program Files%\MSXML 6.0\Desk_top_.ini
- %Program Files%\MSXML 6.0\EULA\Desk_top_.ini
- %Program Files%\Online Services\Desk_top_.ini
- %Program Files%\Reference Assemblies\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.0\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.5\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\Desk_top_.ini
- %Program Files%\Uninstall Information\Desk_top_.ini
- %Program Files%\WinPcap\Desk_top_.ini
- %User Temp%\24$$.Ico
- %User Temp%\3$$.Ico
- %Program Files%\xerox\Desk_top_.ini
- %Program Files%\xerox\nwwia\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.exe
- %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.exe
- %System Root%\¡¡¡¡¡¡.exe
- %Program Files%\WinPcap\Uninstall.exe
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}g08.com/down/down.txt
This report is generated via an automated analysis system.
SOLUTION
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
Step 3
Delete this registry key
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 NT\CurrentVersion\Image File Execution Options
- AVP.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- RavMon.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- RavMonD.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- RavStub.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- RavTask.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- CCenter.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- 360tray.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- 360Safe.exe
Step 4
Delete this registry value
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\Run
- Explorer = "%System%\drivers\TXPlatform.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AVP.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavMon.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavMonD.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavStub.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavTask.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\CCenter.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360tray.exe
- Debugger = "ntsd -d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360Safe.exe
- Debugger = "ntsd -d"
Step 5
Restore this modified registry value
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\Explorer\Advanced\Folder\Hidden\SHOWALL
- From: CheckedValue = "0"
To: CheckedValue = ""1""
- From: CheckedValue = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
- From: NoDriveTypeAutoRun = "8"
To: NoDriveTypeAutoRun = ""91""
- From: NoDriveTypeAutoRun = "8"
Step 6
Search and delete these files
- %System Root%\go.sys
- %Program Files%\Desk_top_.ini
- %Program Files%\Adobe\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Esl\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Desk_top_.ini
- %User Temp%\20.Ico
- %User Temp%\28.Ico
- %User Temp%\48.Ico
- %User Temp%\52.Ico
- %User Temp%\0.Ico
- %Program Files%\Adobe\Reader 10.0\Reader\AIR\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Browser\Desk_top_.ini
- %User Temp%\83.Ico
- %Program Files%\Adobe\Reader 10.0\Reader\IDTemplates\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\IDTemplates\ENU\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Javascripts\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Legal\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Legal\ENU\Desk_top_.ini
- %User Temp%\66.Ico
- %User Temp%\67.Ico
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\AcroForm\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\AcroForm\PMP\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Annotations\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Annotations\Stamps\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Annotations\Stamps\ENU\Desk_top_.ini
- %System Root%\autorun.inf
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Multimedia\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins\Multimedia\MPP\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins3d\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\plug_ins3d\prc\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Services\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\SPPlugins\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\Tracker\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\CMap\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Font\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Font\PFM\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\LanguageNames2\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Providers\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Providers\Proximity\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\Linguistics\Providers\Proximity\11.00\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\SaslPrep\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\ICU\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\Adobe\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\Mac\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Resource\TypeSupport\Unicode\Mappings\win\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Setup Files\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Setup Files\{AC76BA86-7AD7-1033-7B44-AA0000000001}\Desk_top_.ini
- %Program Files%\Microsoft.NET\Desk_top_.ini
- %Program Files%\Microsoft.NET\RedistList\Desk_top_.ini
- %Program Files%\MSBuild\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Windows Workflow Foundation\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\Desk_top_.ini
- %Program Files%\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\Desk_top_.ini
- %Program Files%\MSN Gaming Zone\Desk_top_.ini
- %Program Files%\MSXML 6.0\Desk_top_.ini
- %Program Files%\MSXML 6.0\EULA\Desk_top_.ini
- %Program Files%\Online Services\Desk_top_.ini
- %Program Files%\Reference Assemblies\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.0\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.5\Desk_top_.ini
- %Program Files%\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\Desk_top_.ini
- %Program Files%\Uninstall Information\Desk_top_.ini
- %Program Files%\WinPcap\Desk_top_.ini
- %User Temp%\24.Ico
- %User Temp%\3.Ico
- %Program Files%\xerox\Desk_top_.ini
- %Program Files%\xerox\nwwia\Desk_top_.ini
- %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.exe
- %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.exe
- %System Root%\¡¡¡¡¡¡.exe
- %Program Files%\WinPcap\Uninstall.exe
Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as PE_FUJACKS.KK-O. 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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