BKDR_POISON.SMUD
is password protected and cannot be scanned., is password protected and cannot be scanned., is passw (Microsoft); [2.nsis\Source Atualizada 2011 Keylogger banker CC Operador]:password-protected, [2.nsis\AmericaExpr (McAfee); Trojan.Gen (Symantec); ARC:NSIS, ARC:[Source Atualizada 2011 Keylogger banker CC Operador.exe]:NSIS, ARC:[Source Atualizada (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor 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.
TECHNICAL DETAILS
Arrival Details
This backdoor 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 backdoor creates the following folders:
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\ADMINI~1
- %User Profile%\LOCALS~1
- %System Root%\Documents and Settings\Administrator
- %Desktop%\Source Atualizada 2011 Keylogger banker CC Operador
- %System Root%\dir
- %System Root%\dir\install
- %System Root%\dir\install\install
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, 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.)
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
HKLM = "%System Root%\dir\install\install\NeoPal.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
HKCU = "%System Root%\dir\install\install\NeoPal.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
StubPath = "%System Root%\dir\install\install\NeoPal.exe Restart"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
StubPath = "%System Root%\dir\install\install\NeoPal.exe"
Other System Modifications
This backdoor deletes the following files:
- %User Temp%\nsq1.tmp
- %User Temp%\nso2.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.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\
Active Setup\Installed Components\{08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
HKEY_CURRENT_USER\SOFTWARE\Banker
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
Policies = "%System Root%\dir\install\install\NeoPal.exe"
HKEY_CURRENT_USER\Software\Banker
FirstExecution = "15/06/2012 -- 00:36"
It creates the following registry entry(ies) to disable Task Manager, Registry Tools and Folder Options:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
Policies = "%System Root%\dir\install\install\NeoPal.exe"
It deletes the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Active Setup\Installed Components\{08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
Dropping Routine
This backdoor drops the following files:
- %User Temp%\Source Atualizada 2011 Keylogger banker CC Operador.exe
- %User Temp%\Setup.exe
- %Desktop%\Source Atualizada 2011 Keylogger banker CC Operador\Source Atualizada 2011 Keylogger banker CC Operador.zip
- %User Temp%\XX--XX--XX.txt
- %User Profile%\Application Data\logs.dat
- %System Root%\dir\install\install\NeoPal.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.. %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.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
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
Enable Registry Editor, Task Manager, and Folder options
Step 4
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\Policies\Explorer
- Run
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
- Run
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components
- {08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
- In HKEY_CURRENT_USER\SOFTWARE
- Banker
Step 5
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\Run
- HKLM = "%System Root%\dir\install\install\NeoPal.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKCU = "%System Root%\dir\install\install\NeoPal.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
- StubPath = "%System Root%\dir\install\install\NeoPal.exe Restart"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
- StubPath = "%System Root%\dir\install\install\NeoPal.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
- Policies = "%System Root%\dir\install\install\NeoPal.exe"
- In HKEY_CURRENT_USER\Software\Banker
- FirstExecution = "15/06/2012 -- 00:36"
Step 6
Search and delete these files
- %User Temp%\Source Atualizada 2011 Keylogger banker CC Operador.exe
- %User Temp%\Setup.exe
- %Desktop%\Source Atualizada 2011 Keylogger banker CC Operador\Source Atualizada 2011 Keylogger banker CC Operador.zip
- %User Temp%\XX--XX--XX.txt
- %User Profile%\Application Data\logs.dat
- %System Root%\dir\install\install\NeoPal.exe
Step 7
Search and delete these folders
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\ADMINI~1
- %User Profile%\LOCALS~1
- %System Root%\Documents and Settings\Administrator
- %Desktop%\Source Atualizada 2011 Keylogger banker CC Operador
- %System Root%\dir
- %System Root%\dir\install
- %System Root%\dir\install\install
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_POISON.SMUD. 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 9
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%\nsq1.tmp
- %User Temp%\nso2.tmp
Step 10
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_CURRENT_USER\Software\Microsoft\Active Setup\Installed Components
- {08B0E5JF-4FCB-11CF-AAA5-00401C6XX500}
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