TSPY_LDPINCH.CRT
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It modifies files, disabling programs and applications from properly running.
TECHNICAL DETAILS
40,960 bytes
EXE
No
05 Jun 2012
Arrival Details
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This spyware modifies the following files:
- %System%\mspmsnsv.dll
- %Windows%\Tasks\SA.DAT
- %Windows%\Prefetch\NTOSBOOT-B00DFAAD.pf
- %Windows%\Prefetch\SVCHOST.EXE-3530F672.pf
(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.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
It deletes the following files:
- %System%\dllcache\mspmsnsv.dll
- %User Temp%\1.tmp
(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.. %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 modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Prefetcher
Version = "11"
(Note: The default value data of the said registry entry is 11.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Prefetcher
StartTime = "2012/06/04-22:48:36"
(Note: The default value data of the said registry entry is 2011/12/21-02:22:02.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Prefetcher
TracesProcessed = "0"
(Note: The default value data of the said registry entry is 9.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Prefetcher
TracesSuccessful = "0"
(Note: The default value data of the said registry entry is 6.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Prefetcher
LastTraceFailure = "0"
(Note: The default value data of the said registry entry is 4.)
Dropping Routine
This spyware drops the following files:
- %System%\msimage.nls
- %Program Files%\Common Files\bak.dll
- %System%\dllcache\mspmsnsv.dll
(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.. %Program Files% is the default Program Files folder, usually C:\Program Files.)
This report is generated via an automated analysis system.
SOLUTION
9.200
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
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 NT\CurrentVersion\Prefetcher
- From: Version = "11"
To: Version = ""11""
- From: Version = "11"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Prefetcher
- From: StartTime = "2012/06/04-22:48:36"
To: StartTime = ""2011/12/21-02:22:02""
- From: StartTime = "2012/06/04-22:48:36"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Prefetcher
- From: TracesProcessed = "0"
To: TracesProcessed = ""9""
- From: TracesProcessed = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Prefetcher
- From: TracesSuccessful = "0"
To: TracesSuccessful = ""6""
- From: TracesSuccessful = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Prefetcher
- From: LastTraceFailure = "0"
To: LastTraceFailure = ""4""
- From: LastTraceFailure = "0"
Step 3
Search and delete these files
- %System%\msimage.nls
- %Program Files%\Common Files\bak.dll
- %System%\dllcache\mspmsnsv.dll
Step 4
Scan your computer with your Trend Micro product to delete files detected as TSPY_LDPINCH.CRT. 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 5
Restore deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %System%\mspmsnsv.dll
- %Windows%\Tasks\SA.DAT
- %Windows%\Prefetch\NTOSBOOT-B00DFAAD.pf
- %Windows%\Prefetch\SVCHOST.EXE-3530F672.pf
Step 6
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.
- %System%\dllcache\mspmsnsv.dll
- %User Temp%\1.tmp
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