TROJ_DIRCRYPT.K

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.

It disables Task Manager, Registry Editor, and Folder Options.

File Size: 24,576 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 07 Aug 2015

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:

%Program Files%\MSN Gaming Zone\otbQbYeC.exe
%Application Data%\Microsoft\aJTdzIeE.exe
%User Temp%\nJaMdEHM.exe

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It creates the following folders:

%User Profile%\Application Data\Dirty
%Application Data%\kzpIsLLy
%Program Files%\Dirty
%Application Data%\Dirty
%Application Data%\cssCKgnt
%Application Data%\kzpIsLLy\css
%Application Data%\kzpIsLLy\images
%Application Data%\kzpIsLLy\images/content

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)

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
ZiHyZnrI = "%Application Data%\Microsoft\aJTdzIeE.exe"

It modifies the following registry entries to ensure it automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Userinit = "%System%\userinit.exe,,%Program Files%\MSN Gaming Zone\otbQbYeC.exe"

(Note: The default value data of the said registry entry is %Windows%\system32\userinit.exe,.)

Other System Modifications

This Trojan deletes the following files:

%Program Files%\MSN Gaming Zone\otbQbYeC.exe:Zone.Identifier
%Application Data%\Microsoft\aJTdzIeE.exe:Zone.Identifier
%User Startup%\RbKsrITa.exe:Zone.Identifier
%User Temp%\nJaMdEHM.exe:Zone.Identifier
%User Profile%\S-1-5-21-1645522239-1292428093-682003330-1003\4a4ad625f364c18c1ab6565a40b9a3ba_6abce574-4afc-42c5-8ab9-5739a84d8a8b

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It deletes the following folders:

%System Root%\{A14913F0-13E4-848E-F528-66C3B4FB4FC0}

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}

HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\policies\
system

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
ID = "{random values}"

HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
ID = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
system
EnableLUA = "0"

HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
PeriodDisabed = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
PeriodDisabed = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DoNotAllowExceptions = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
EnableFirewall = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
UacDisableNotify = "1"

HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
Personal = "64.212.34.30_Level 3 Communications__"

HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
Personal = "64.212.34.30_Level 3 Communications__"

HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
LID = "13ad76c8"

HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
LID = "13ad76c8"

HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
Landing = "%Application Data%\kzpIsLLy"

HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
Landing = "%Application Data%\kzpIsLLy"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\wscsvc
Start = "4"

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\wuauserv
Start = "4"

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusOverride = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallOverride = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
UpdatesDisableNotify = "1"

It creates the following registry entry(ies) to disable Task Manager, Registry Tools and Folder Options:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
system
DisableTaskMgr = "1"

Dropping Routine

This Trojan drops the following files:

%User Profile%\Dirty\alertwall.jpg
%Program Files%\Dirty\DirtyDecrypt.exe
%User Profile%\Dirty\DirtyDecrypt.exe
%Application Data%\Dirty\DirtyDecrypt.exe
%Application Data%\kzpIsLLy\css/all.css
%Application Data%\kzpIsLLy\css/style-custom.css
%Application Data%\kzpIsLLy\images/arrow.png
%Application Data%\kzpIsLLy\images/bg-box-bottom.png
%Application Data%\kzpIsLLy\images/bg-box.jpg
%Application Data%\kzpIsLLy\images/bg-btn-sprite.png
%Application Data%\kzpIsLLy\images/bg-header-repeat.gif
%Application Data%\kzpIsLLy\images/bg-html.jpg
%Application Data%\kzpIsLLy\images/bg-li.png
%Application Data%\kzpIsLLy\images/bg-track.gif
%Application Data%\kzpIsLLy\images/content/img1.jpg
%Application Data%\kzpIsLLy\images/content/img2.jpg
%Application Data%\kzpIsLLy\images/content/img3.jpg
%Application Data%\kzpIsLLy\images/content/img4.jpg
%Application Data%\kzpIsLLy\images/dominicks.png
%Application Data%\kzpIsLLy\images/dotted-copy.png
%Application Data%\kzpIsLLy\images/dotted-small.png
%Application Data%\kzpIsLLy\images/dotted.png
%Application Data%\kzpIsLLy\images/epay.png
%Application Data%\kzpIsLLy\images/genuardis.png
%Application Data%\kzpIsLLy\images/logo-ie.png
%Application Data%\kzpIsLLy\images/logo.png
%Application Data%\kzpIsLLy\images/moneypack.png
%Application Data%\kzpIsLLy\images/nowprepay.png
%Application Data%\kzpIsLLy\images/oder.png
%Application Data%\kzpIsLLy\images/paysafe.png
%Application Data%\kzpIsLLy\images/pioneer.png
%Application Data%\kzpIsLLy\images/precash.png
%Application Data%\kzpIsLLy\images/price.png
%Application Data%\kzpIsLLy\images/safeway.png
%Application Data%\kzpIsLLy\images/sagamie.png
%Application Data%\kzpIsLLy\images/shoprite.png
%Application Data%\kzpIsLLy\images/total.png
%Application Data%\kzpIsLLy\images/usa.png
%Application Data%\kzpIsLLy\images/webcam.png
%Application Data%\kzpIsLLy\images/x.jpg
%Application Data%\kzpIsLLy\index.html
%User Startup%\RbKsrITa.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)

Other Details

This Trojan connects to the following possibly malicious URL:

{BLOCKED}.162.67
{BLOCKED}0.1

This report is generated via an automated analysis system.

Minimum Scan Engine: 9.750

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

Identify and delete files detected as TROJ_DIRCRYPT.K using either the Startup Disk or Recovery Console

[ Learn More ]

To identify and delete the malware/grayware file:

• On Windows XP and Server 2003 systems:

Scan your computer with your Trend Micro product and then take note of the names of the malware/grayware files detected.
Click Start>Run. In the Open input box, type secpol.msc and press Enter.
In the left panel, double-click Local Policies>Security Options.
In the right panel, double-click Recovery Console: Allow floppy copy and access to all drives and folders.
Select Enabled and click OK.
Insert the Windows Installation CD into the CD drive, then restart your computer.
When prompted, press any key to boot from the CD.
On the main menu, type r to go to the Recovery Console.
Type the number that corresponds to the drive and directory that contains Windows (usually C:\WINDOWS) and press Enter.
Type the Administrator password and press Enter.
In the input box, type the following then press Enter:
SET AllowAllPaths = TRUE
del "{malware/grayware path and file name}"
Type exit and press Enter to restart the system normally.

• On Windows Vista, 7, and Server 2008 systems:

Scan your computer with your Trend Micro product and then take note of the names of the malware/grayware files detected.
Insert your Windows Installation DVD in the DVD drive, then Press the restart button.
When prompted, press any key to boot from the CD.
Depending on your Windows Installation DVD, you might be required to select the installation language. Then on the Install Windows window, choose your language, locale, and keyboard layout or input method. Click Next, then click Repair your computer.
Select Use recovery tools that can help fix problems starting Windows. Select your installation of Windows. Click Next.
If the Startup Repair window appears, click Cancel, Yes, then Finish.
In the System Recovery Options window, click Command Prompt.
In the Command Prompt window, type the following then press Enter:
BootRec.exe /fixmbr
del "{malware/grayware path and file name}"
Type exit and press Enter to close the Command Prompt window.
Click Restart to restart the system normally.

• On Windows 8, 8.1, and Server 2012 systems:

Scan your computer with your Trend Micro product and then take note of the names of the malware/grayware files detected.
Insert your Windows Installation DVD in the DVD drive, then restart your computer.
When prompted, press any key to boot from the DVD.
Depending on your Windows Installation DVD, you might be required to select the keyboard layout. Then on the Windows Setup window, choose your language, locale, and input method. Click Next, then click Repair your computer.
Click Troubleshoot>Advanced Options>Command Prompt.
In the Command Prompt window, type the following then press Enter:
BootRec.exe /fixmbr
del "{malware/grayware path and file name}"
Type exit and press Enter to close the Command Prompt window.
Click Continue to restart the system normally.

Step 3

Enable Registry Editor, Task Manager, and Folder options

[ Learn More ]

By doing this step, you also enable other applications/programs disabled by this malware/grayware/spyware.

Step 4

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
- {EDDF73F5-5E7A-CF14-30BF-A14913F07575}

In HKEY_CURRENT_USER\Software
- {EDDF73F5-5E7A-CF14-30BF-A14913F07575}

In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\policies
- system

Step 5

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\Run
- ZiHyZnrI = "%Application Data%\Microsoft\aJTdzIeE.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- ID = "{random values}"

In HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- ID = "{random values}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
- EnableLUA = "0"

In HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- PeriodDisabed = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- PeriodDisabed = "1"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DisableNotifications = "1"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DoNotAllowExceptions = "0"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- EnableFirewall = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- UacDisableNotify = "1"

In HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- Personal = "64.212.34.30_Level 3 Communications__"

In HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- Personal = "64.212.34.30_Level 3 Communications__"

In HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- LID = "13ad76c8"

In HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- LID = "13ad76c8"

In HKEY_CURRENT_USER\Software\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- Landing = "%Application Data%\kzpIsLLy"

In HKEY_LOCAL_MACHINE\SOFTWARE\{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
- Landing = "%Application Data%\kzpIsLLy"

To delete the registry value this malware/grayware created:

Open Registry Editor.
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower-left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run
In the right panel, locate and delete the entry:
ZiHyZnrI = "%Application Data%\Microsoft\aJTdzIeE.exe"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
In the right panel, locate and delete the entry:
ID = "{random values}"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>{EDDF73F5-5E7A-CF14-30BF-A14913F07575}
In the right panel, locate and delete the entry:
ID = "{random values}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>policies>system
In the right panel, locate and delete the entry:
EnableLUA = "0"
Again In the right panel, locate and delete the entry:
PeriodDisabed = "1"
Again In the right panel, locate and delete the entry:
PeriodDisabed = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile
In the right panel, locate and delete the entry:
DisableNotifications = "1"
Again In the right panel, locate and delete the entry:
DoNotAllowExceptions = "0"
Again In the right panel, locate and delete the entry:
EnableFirewall = "0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Security Center
In the right panel, locate and delete the entry:
UacDisableNotify = "1"
Again In the right panel, locate and delete the entry:
Personal = "64.212.34.30_Level 3 Communications__"
Again In the right panel, locate and delete the entry:
Personal = "64.212.34.30_Level 3 Communications__"
Again In the right panel, locate and delete the entry:
LID = "13ad76c8"
Again In the right panel, locate and delete the entry:
LID = "13ad76c8"
Again In the right panel, locate and delete the entry:
Landing = "%Application Data%\kzpIsLLy"
Again In the right panel, locate and delete the entry:
Landing = "%Application Data%\kzpIsLLy"
Close Registry Editor.

Step 6

Restore these modified registry values

[ Learn More ]

Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\wscsvc
- From: Start = "4"
  To: Start = ""2""

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\wuauserv
- From: Start = "4"
  To: Start = ""2""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- AntiVirusOverride = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- AntiVirusDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- FirewallDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- FirewallOverride = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- UpdatesDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- From: Userinit = "%System%\userinit.exe,,%Program Files%\MSN Gaming Zone\otbQbYeC.exe"
  To: Userinit = ""%Windows%\system32\userinit.exe,""

Step 7

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.

%User Profile%\Dirty\alertwall.jpg
%Program Files%\Dirty\DirtyDecrypt.exe
%User Profile%\Dirty\DirtyDecrypt.exe
%Application Data%\Dirty\DirtyDecrypt.exe
%Application Data%\kzpIsLLy\css/all.css
%Application Data%\kzpIsLLy\css/style-custom.css
%Application Data%\kzpIsLLy\images/arrow.png
%Application Data%\kzpIsLLy\images/bg-box-bottom.png
%Application Data%\kzpIsLLy\images/bg-box.jpg
%Application Data%\kzpIsLLy\images/bg-btn-sprite.png
%Application Data%\kzpIsLLy\images/bg-header-repeat.gif
%Application Data%\kzpIsLLy\images/bg-html.jpg
%Application Data%\kzpIsLLy\images/bg-li.png
%Application Data%\kzpIsLLy\images/bg-track.gif
%Application Data%\kzpIsLLy\images/content/img1.jpg
%Application Data%\kzpIsLLy\images/content/img2.jpg
%Application Data%\kzpIsLLy\images/content/img3.jpg
%Application Data%\kzpIsLLy\images/content/img4.jpg
%Application Data%\kzpIsLLy\images/dominicks.png
%Application Data%\kzpIsLLy\images/dotted-copy.png
%Application Data%\kzpIsLLy\images/dotted-small.png
%Application Data%\kzpIsLLy\images/dotted.png
%Application Data%\kzpIsLLy\images/epay.png
%Application Data%\kzpIsLLy\images/genuardis.png
%Application Data%\kzpIsLLy\images/logo-ie.png
%Application Data%\kzpIsLLy\images/logo.png
%Application Data%\kzpIsLLy\images/moneypack.png
%Application Data%\kzpIsLLy\images/nowprepay.png
%Application Data%\kzpIsLLy\images/oder.png
%Application Data%\kzpIsLLy\images/paysafe.png
%Application Data%\kzpIsLLy\images/pioneer.png
%Application Data%\kzpIsLLy\images/precash.png
%Application Data%\kzpIsLLy\images/price.png
%Application Data%\kzpIsLLy\images/safeway.png
%Application Data%\kzpIsLLy\images/sagamie.png
%Application Data%\kzpIsLLy\images/shoprite.png
%Application Data%\kzpIsLLy\images/total.png
%Application Data%\kzpIsLLy\images/usa.png
%Application Data%\kzpIsLLy\images/webcam.png
%Application Data%\kzpIsLLy\images/x.jpg
%Application Data%\kzpIsLLy\index.html
%User Startup%\RbKsrITa.exe

To manually delete a malware/grayware file from an affected system:

• For Windows 2000, Windows XP, and Windows Server 2003:

Right-click Start then click Search....
In the File name* input box, type the following:
%User Profile%\Dirty\alertwall.jpg
%Program Files%\Dirty\DirtyDecrypt.exe
%User Profile%\Dirty\DirtyDecrypt.exe
%Application Data%\Dirty\DirtyDecrypt.exe
%Application Data%\kzpIsLLy\css/all.css
%Application Data%\kzpIsLLy\css/style-custom.css
%Application Data%\kzpIsLLy\images/arrow.png
%Application Data%\kzpIsLLy\images/bg-box-bottom.png
%Application Data%\kzpIsLLy\images/bg-box.jpg
%Application Data%\kzpIsLLy\images/bg-btn-sprite.png
%Application Data%\kzpIsLLy\images/bg-header-repeat.gif
%Application Data%\kzpIsLLy\images/bg-html.jpg
%Application Data%\kzpIsLLy\images/bg-li.png
%Application Data%\kzpIsLLy\images/bg-track.gif
%Application Data%\kzpIsLLy\images/content/img1.jpg
%Application Data%\kzpIsLLy\images/content/img2.jpg
%Application Data%\kzpIsLLy\images/content/img3.jpg
%Application Data%\kzpIsLLy\images/content/img4.jpg
%Application Data%\kzpIsLLy\images/dominicks.png
%Application Data%\kzpIsLLy\images/dotted-copy.png
%Application Data%\kzpIsLLy\images/dotted-small.png
%Application Data%\kzpIsLLy\images/dotted.png
%Application Data%\kzpIsLLy\images/epay.png
%Application Data%\kzpIsLLy\images/genuardis.png
%Application Data%\kzpIsLLy\images/logo-ie.png
%Application Data%\kzpIsLLy\images/logo.png
%Application Data%\kzpIsLLy\images/moneypack.png
%Application Data%\kzpIsLLy\images/nowprepay.png
%Application Data%\kzpIsLLy\images/oder.png
%Application Data%\kzpIsLLy\images/paysafe.png
%Application Data%\kzpIsLLy\images/pioneer.png
%Application Data%\kzpIsLLy\images/precash.png
%Application Data%\kzpIsLLy\images/price.png
%Application Data%\kzpIsLLy\images/safeway.png
%Application Data%\kzpIsLLy\images/sagamie.png
%Application Data%\kzpIsLLy\images/shoprite.png
%Application Data%\kzpIsLLy\images/total.png
%Application Data%\kzpIsLLy\images/usa.png
%Application Data%\kzpIsLLy\images/webcam.png
%Application Data%\kzpIsLLy\images/x.jpg
%Application Data%\kzpIsLLy\index.html
%User Startup%\RbKsrITa.exe
In the Look In drop-down list, select My Computer then press Enter.
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen,then click File Explorer.
In the Search Computer/This PC input box, type:
%User Profile%\Dirty\alertwall.jpg
%Program Files%\Dirty\DirtyDecrypt.exe
%User Profile%\Dirty\DirtyDecrypt.exe
%Application Data%\Dirty\DirtyDecrypt.exe
%Application Data%\kzpIsLLy\css/all.css
%Application Data%\kzpIsLLy\css/style-custom.css
%Application Data%\kzpIsLLy\images/arrow.png
%Application Data%\kzpIsLLy\images/bg-box-bottom.png
%Application Data%\kzpIsLLy\images/bg-box.jpg
%Application Data%\kzpIsLLy\images/bg-btn-sprite.png
%Application Data%\kzpIsLLy\images/bg-header-repeat.gif
%Application Data%\kzpIsLLy\images/bg-html.jpg
%Application Data%\kzpIsLLy\images/bg-li.png
%Application Data%\kzpIsLLy\images/bg-track.gif
%Application Data%\kzpIsLLy\images/content/img1.jpg
%Application Data%\kzpIsLLy\images/content/img2.jpg
%Application Data%\kzpIsLLy\images/content/img3.jpg
%Application Data%\kzpIsLLy\images/content/img4.jpg
%Application Data%\kzpIsLLy\images/dominicks.png
%Application Data%\kzpIsLLy\images/dotted-copy.png
%Application Data%\kzpIsLLy\images/dotted-small.png
%Application Data%\kzpIsLLy\images/dotted.png
%Application Data%\kzpIsLLy\images/epay.png
%Application Data%\kzpIsLLy\images/genuardis.png
%Application Data%\kzpIsLLy\images/logo-ie.png
%Application Data%\kzpIsLLy\images/logo.png
%Application Data%\kzpIsLLy\images/moneypack.png
%Application Data%\kzpIsLLy\images/nowprepay.png
%Application Data%\kzpIsLLy\images/oder.png
%Application Data%\kzpIsLLy\images/paysafe.png
%Application Data%\kzpIsLLy\images/pioneer.png
%Application Data%\kzpIsLLy\images/precash.png
%Application Data%\kzpIsLLy\images/price.png
%Application Data%\kzpIsLLy\images/safeway.png
%Application Data%\kzpIsLLy\images/sagamie.png
%Application Data%\kzpIsLLy\images/shoprite.png
%Application Data%\kzpIsLLy\images/total.png
%Application Data%\kzpIsLLy\images/usa.png
%Application Data%\kzpIsLLy\images/webcam.png
%Application Data%\kzpIsLLy\images/x.jpg
%Application Data%\kzpIsLLy\index.html
%User Startup%\RbKsrITa.exe
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 8

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 Profile%\Application Data\Dirty
%Application Data%\kzpIsLLy
%Program Files%\Dirty
%Application Data%\Dirty
%Application Data%\cssCKgnt
%Application Data%\kzpIsLLy\css
%Application Data%\kzpIsLLy\images
%Application Data%\kzpIsLLy\images/content

To delete malware/grayware/spyware folders:

For Windows 2000, Windows XP, and Windows Server 2003:

Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
In the File name* input box, type:

%User Profile%\Application Data\Dirty
%Application Data%\kzpIsLLy
%Program Files%\Dirty
%Application Data%\Dirty
%Application Data%\cssCKgnt
%Application Data%\kzpIsLLy\css
%Application Data%\kzpIsLLy\images
%Application Data%\kzpIsLLy\images/content
In the Look In drop-down list, select My Computer, then press Enter.
Once located, select the folder then press SHIFT+DELETE to permanently delete the folder.
Repeat steps 2 to 4 for the remaining folders: %User Profile%\Application Data\Dirty
%Application Data%\kzpIsLLy
%Program Files%\Dirty
%Application Data%\Dirty
%Application Data%\cssCKgnt
%Application Data%\kzpIsLLy\css
%Application Data%\kzpIsLLy\images
%Application Data%\kzpIsLLy\images/content

*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
In the Search Computer/This PC input box, type:
%User Profile%\Application Data\Dirty
%Application Data%\kzpIsLLy
%Program Files%\Dirty
%Application Data%\Dirty
%Application Data%\cssCKgnt
%Application Data%\kzpIsLLy\css
%Application Data%\kzpIsLLy\images
%Application Data%\kzpIsLLy\images/content
Once located, select the file then press SHIFT+DELETE to permanently delete the folder.
Repeat steps 2-3 for the remaining folders: %User Profile%\Application Data\Dirty
%Application Data%\kzpIsLLy
%Program Files%\Dirty
%Application Data%\Dirty
%Application Data%\cssCKgnt
%Application Data%\kzpIsLLy\css
%Application Data%\kzpIsLLy\images
%Application Data%\kzpIsLLy\images/content

*Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 9

Scan your computer with your Trend Micro product to delete files detected as TROJ_DIRCRYPT.K. 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 10

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.

%Program Files%\MSN Gaming Zone\otbQbYeC.exe:Zone.Identifier
%Application Data%\Microsoft\aJTdzIeE.exe:Zone.Identifier
%User Startup%\RbKsrITa.exe:Zone.Identifier
%User Temp%\nJaMdEHM.exe:Zone.Identifier
%User Profile%\S-1-5-21-1645522239-1292428093-682003330-1003\4a4ad625f364c18c1ab6565a40b9a3ba_6abce574-4afc-42c5-8ab9-5739a84d8a8b

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TROJ_DIRCRYPT.K

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