TSPY_LOADLIB.A
Windows
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.
TECHNICAL DETAILS
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 file(s):
- %Windows%\inf\intl.PNF
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)
It deletes the following files:
- %Windows%\fonts\msgothic.ttf
- %Windows%\fonts\msuigoth.ttf
- %Windows%\fonts\MSMINCHO.TTF
- %Windows%\fonts\Gulim.ttf
- %Windows%\fonts\Gulimche.ttf
- %Windows%\fonts\Dotum.ttf
- %Windows%\fonts\Batang.ttf
- %Windows%\fonts\Gungsuh.ttf
- %Windows%\fonts\Simsun.ttf
- %Windows%\fonts\nsimsun.ttf
- %Windows%\fonts\MingLiU.ttf
- %Windows%\fonts\pmingliu.ttf
- %System%\kbd101b.dll
- %System%\kbd101c.dll
- %System%\kbd103.dll
- %System%\kbd106.dll
- %System%\kbdjpn.dll
- %System%\kbdkor.dll
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It adds the following registry keys:
HKEY_CLASSES_ROOT\course_id_sa
HKEY_CURRENT_USER\Software\Microsoft\
HTTP Server
HKEY_CURRENT_USER\Software\Microsoft\
HTTP Server\Recent File List
HKEY_CURRENT_USER\Software\Microsoft\
HTTP Server\Settings
HKEY_CLASSES_ROOT\.hsc\ShellNew
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
course_id_sa
95cc415e-6d41-4c7a-a40e-f9f91e2bde13 = "1462770104/1462770104"
HKEY_CLASSES_ROOT
HttpSvr.Document = "HttpSvr Document"
HKEY_CLASSES_ROOT
HttpSvr.Document\DefaultIcon = "%User Temp%\SAHTTP~1.EXE,1"
HKEY_CLASSES_ROOT
HttpSvr.Document\shell\open\command = "%User Temp%\SAHTTP~1.EXE %1 "
HKEY_CLASSES_ROOT
HttpSvr.Document\shell\print\command = "%User Temp%\SAHTTP~1.EXE /p %1 "
HKEY_CLASSES_ROOT
HttpSvr.Document\shell\printto\command = "%User Temp%\SAHTTP~1.EXE /pt %1 %2 %3 %4 "
HKEY_CLASSES_ROOT
.hsc = "HttpSvr.Document"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%User Temp%\SAHttpSvr.exe = "%User Temp%\SAHttpSvr.exe:*:Enabled:CTMS AGENT"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
Enable = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
Size = "a"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
InitHits = "64"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
Factor = "14"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International
W2KLpk = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International
W2KLpk = "0"
Dropping Routine
This spyware drops the following files:
- %User Temp%\SAExplorer.exe
- %User Temp%\SAHookDLL.dll
- %User Temp%\SAHttpSvr.exe
- %System%\SET6.tmp
- %System%\SETC.tmp
- %System%\SET12.tmp
- %System%\SET18.tmp
- %System%\SET1E.tmp
- %System%\SET24.tmp
(Note: %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.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other Details
This spyware connects to the following possibly malicious URL:
- {BLOCKED}0.1
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_CLASSES_ROOT
- course_id_sa
- In HKEY_CURRENT_USER\Software\Microsoft
- HTTP Server
- In HKEY_CURRENT_USER\Software\Microsoft\HTTP Server
- Recent File List
- In HKEY_CURRENT_USER\Software\Microsoft\HTTP Server
- Settings
- In HKEY_CLASSES_ROOT\.hsc
- ShellNew
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International
- CpMRU
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\Classes\course_id_sa
- 95cc415e-6d41-4c7a-a40e-f9f91e2bde13 = "1462770104/1462770104"
- In HKEY_CLASSES_ROOT
- HttpSvr.Document = "HttpSvr Document"
- In HKEY_CLASSES_ROOT
- HttpSvr.Document\DefaultIcon = "%User Temp%\SAHTTP~1.EXE,1"
- In HKEY_CLASSES_ROOT
- HttpSvr.Document\shell\open\command = "%User Temp%\SAHTTP~1.EXE %1 "
- In HKEY_CLASSES_ROOT
- HttpSvr.Document\shell\print\command = "%User Temp%\SAHTTP~1.EXE /p %1 "
- In HKEY_CLASSES_ROOT
- HttpSvr.Document\shell\printto\command = "%User Temp%\SAHTTP~1.EXE /pt %1 %2 %3 %4 "
- In HKEY_CLASSES_ROOT
- .hsc = "HttpSvr.Document"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %User Temp%\SAHttpSvr.exe = "%User Temp%\SAHttpSvr.exe:*:Enabled:CTMS AGENT"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
- Enable = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
- Size = "a"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
- InitHits = "64"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
- Factor = "14"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International
- W2KLpk = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International
- W2KLpk = "0"
Step 4
Search and delete these components
- %User Temp%\SAExplorer.exe
- %User Temp%\SAHookDLL.dll
- %User Temp%\SAHttpSvr.exe
- %System%\SET6.tmp
- %System%\SETC.tmp
- %System%\SET12.tmp
- %System%\SET18.tmp
- %System%\SET1E.tmp
- %System%\SET24.tmp
Step 5
Scan your computer with your Trend Micro product to delete files detected as TSPY_LOADLIB.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 6
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.
- %Windows%\inf\intl.PNF
Step 7
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.
- %Windows%\fonts\msgothic.ttf
- %Windows%\fonts\msuigoth.ttf
- %Windows%\fonts\MSMINCHO.TTF
- %Windows%\fonts\Gulim.ttf
- %Windows%\fonts\Gulimche.ttf
- %Windows%\fonts\Dotum.ttf
- %Windows%\fonts\Batang.ttf
- %Windows%\fonts\Gungsuh.ttf
- %Windows%\fonts\Simsun.ttf
- %Windows%\fonts\nsimsun.ttf
- %Windows%\fonts\MingLiU.ttf
- %Windows%\fonts\pmingliu.ttf
- %System%\kbd101b.dll
- %System%\kbd101c.dll
- %System%\kbd103.dll
- %System%\kbd106.dll
- %System%\kbdjpn.dll
- %System%\kbdkor.dll
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