TROJ_CRYAKL.A

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.

File Size: 1,931,748 bytes

File Type: EXE

Memory Resident: No

Initial Samples Received Date: 18 Aug 2014

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%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ
%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ
%User Profile%\Application Data\TEMP
%Program Files%\filip

(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).. %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.)

Other System Modifications

This Trojan deletes the following files:

%User Temp%\$inst\0.tmp
%User Temp%\$inst\1.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\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7

HKEY_CURRENT_USER\Software\Licenses

HKEY_CLASSES_ROOT\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\LocalServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\VersionIndependentProgID

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
DisplayName = "CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
DisplayVersion = "7.0.8.0.7"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
VersionMajor = "7"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
VersionMinor = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
Publisher = "ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
DisplayIcon = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
UninstallString = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
InstallLocation = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
InstallDate = "20140807"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
Language = "419"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
EstimatedSize = "18"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
NoRepair = "1"

HKEY_CURRENT_USER\Software\Licenses
{R7C0DB872A3F777C0} = "{random values}"

HKEY_CURRENT_USER\Software\Licenses
{K7C0DB872A3F777C0} = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
AppID = "{F808DF63-6049-11D1-BA20-006097D2898E}"

HKEY_CURRENT_USER\Software\Licenses
{I7B4ED451FFFFFFFF} = "{random values}"

HKEY_CURRENT_USER\Software\Licenses
{07B4ED451FFFFFFFF} = "{random values}"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
RFC1156Agent\CurrentVersion\Parameters
TrapPollTimeMilliSecs = "3a98"

(Note: The default value data of the said registry entry is 3a98.)

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\Version

Dropping Routine

This Trojan drops the following files:

%User Temp%\$inst\2.tmp
%User Temp%\$inst\temp_0.tmp
%User Profile%\TEMP\RAIDTest
%Program Files%\filip\svchost.exe

(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.. %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 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.

Minimum Scan Engine: 9.700

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
- CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7

In HKEY_CURRENT_USER\Software
- Licenses

In HKEY_CLASSES_ROOT\CLSID
- {5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
- LocalServer32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
- ProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
- Programmable

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
- VersionIndependentProgID

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\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- DisplayName = "CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- DisplayVersion = "7.0.8.0.7"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- VersionMajor = "7"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- VersionMinor = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- Publisher = "ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- DisplayIcon = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ\Uninstall.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- UninstallString = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ\Uninstall.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- InstallLocation = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- InstallDate = "20140807"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- Language = "419"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- EstimatedSize = "18"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- NoModify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
- NoRepair = "1"

In HKEY_CURRENT_USER\Software\Licenses
- {R7C0DB872A3F777C0} = "{random values}"

In HKEY_CURRENT_USER\Software\Licenses
- {K7C0DB872A3F777C0} = "{random values}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
- AppID = "{F808DF63-6049-11D1-BA20-006097D2898E}"

In HKEY_CURRENT_USER\Software\Licenses
- {I7B4ED451FFFFFFFF} = "{random values}"

In HKEY_CURRENT_USER\Software\Licenses
- {07B4ED451FFFFFFFF} = "{random values}"

To delete the registry value this malware/grayware created:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Uninstall>CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7
In the right panel, locate and delete the entry:
DisplayName = "CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ 7.0.8.0.7"
Again In the right panel, locate and delete the entry:
DisplayVersion = "7.0.8.0.7"
Again In the right panel, locate and delete the entry:
VersionMajor = "7"
Again In the right panel, locate and delete the entry:
VersionMinor = "0"
Again In the right panel, locate and delete the entry:
Publisher = "ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ"
Again In the right panel, locate and delete the entry:
DisplayIcon = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ\Uninstall.exe"
Again In the right panel, locate and delete the entry:
UninstallString = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ\Uninstall.exe"
Again In the right panel, locate and delete the entry:
InstallLocation = "%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ"
Again In the right panel, locate and delete the entry:
InstallDate = "20140807"
Again In the right panel, locate and delete the entry:
Language = "419"
Again In the right panel, locate and delete the entry:
EstimatedSize = "18"
Again In the right panel, locate and delete the entry:
NoModify = "1"
Again In the right panel, locate and delete the entry:
NoRepair = "1"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Licenses
In the right panel, locate and delete the entry:
{R7C0DB872A3F777C0} = "{random values}"
Again In the right panel, locate and delete the entry:
{K7C0DB872A3F777C0} = "{random values}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
In the right panel, locate and delete the entry:
AppID = "{F808DF63-6049-11D1-BA20-006097D2898E}"
Again In the right panel, locate and delete the entry:
{I7B4ED451FFFFFFFF} = "{random values}"
Again In the right panel, locate and delete the entry:
{07B4ED451FFFFFFFF} = "{random values}"
Close Registry Editor.

Step 4

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\SOFTWARE\Microsoft\RFC1156Agent\CurrentVersion\Parameters
- From: TrapPollTimeMilliSecs = "3a98"
  To: TrapPollTimeMilliSecs = ""3a98""

Step 5

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 Temp%\$inst\2.tmp
%User Temp%\$inst\temp_0.tmp
%User Profile%\TEMP\RAIDTest
%Program Files%\filip\svchost.exe

Step 6

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%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ
%Program Files%\ÈHÔOPMAÖOHHÛE TEXHOËOÃÈÈ\CÓÄÅÁÍÛE ÏPÈCTAÂÛ PÔ
%User Profile%\Application Data\TEMP
%Program Files%\filip

Step 7

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

Step 8

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\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

Step 9

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
- Version

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