TROJ_CRYAKL.A
Ransom:Win32/Criakl.B (Microsoft); Trojan.ADH (Symantec); Trojan-Ransom.Win32.Cryakl.aj (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan:W32/Qhost.WE (FSecure); Trojan horse Ransomer.CCW.dropper (AVG)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/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 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.
SOLUTION
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
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
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}"
Step 4
Restore these modified registry values
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""
- From: TrapPollTimeMilliSecs = "3a98"
Step 5
Search and delete these components
- %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
- %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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