TROJ_STARTP.SMP1
Trojan:Win32/Startpage.KR (Microsoft); Trojan.Gen (Symantec); Trojan.Win32.Phires.zo (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Generic.KDV.369736 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
![](/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.
It deletes itself after execution.
TECHNICAL DETAILS
939,533 bytes
EXE
No
24 Apr 2012
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:
- %Program Files%\Common Files\TaoBao
(Note: %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).)
Other System Modifications
This Trojan deletes the following files:
- %User Temp%\$RAR10~1.TMP
- %User Temp%\$RAR10~2.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_CLASSES_ROOT\.ur1
HKEY_CLASSES_ROOT\.ur1\PersistentHandler
HKEY_CLASSES_ROOT\.ur1\ShellEx
HKEY_CLASSES_ROOT\.ur1\ShellEx\
{000214EE-0000-0000-C000-000000000046}
HKEY_CLASSES_ROOT\.ur1\ShellEx\
{000214F9-0000-0000-C000-000000000046}
HKEY_CLASSES_ROOT\.ur1\ShellEx\
{00021500-0000-0000-C000-000000000046}
HKEY_CLASSES_ROOT\.ur1\ShellEx\
{CABB0DA0-DA57-11CF-9974-0020AFD79762}
HKEY_CLASSES_ROOT\.ur1\ShellEx\
{FBF23B80-E3F0-101B-8488-00AA003E56F8}
HKEY_CLASSES_ROOT\.1nk
HKEY_CLASSES_ROOT\.1nk\ShellEx
HKEY_CLASSES_ROOT\.1nk\ShellEx\
{000214EE-0000-0000-C000-000000000046}
HKEY_CLASSES_ROOT\.1nk\ShellEx\
{000214F9-0000-0000-C000-000000000046}
HKEY_CLASSES_ROOT\.1nk\ShellEx\
{00021500-0000-0000-C000-000000000046}
HKEY_CLASSES_ROOT\.1nk\ShellEx\
{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
HKEY_CLASSES_ROOT\.1nk\ShellNew
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
DontShowMeThisDialogAgain
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
HideDesktopIcons\ClassicStartMenu
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
HideDesktopIcons\NewStartPanel
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
DefaultIcon
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
Shell
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
Shell\Open
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
Shell\Open\Command
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
Shell\ÊôÐÔ
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
Shell\ÊôÐÔ\Command
HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\
ShellFolder
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Desktop\NameSpace\{27AEF9E8-063F-0757-829C-A93575895E80}
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.1nk\ShellNew
Command = "rundll32.exe appwiz.cpl,NewLinkHere %1"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
DontShowMeThisDialogAgain
CompatWarningForwwwwwww.exe = "no"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
HideDesktopIcons\ClassicStartMenu
{871C5380-42A0-1069-A2EA-08002B30309D} = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
HideDesktopIcons\NewStartPanel
{871C5380-42A0-1069-A2EA-08002B30309D} = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
InfoTip = "@shdoclc.dll,-881"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
LocalizedString = "@shdoclc.dll,-880"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\ShellFolder
Attributes = "0"
It deletes the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
RunMRU
Dropping Routine
This Trojan drops the following files:
- %User Temp%\$rar10656.tmp
- %Program Files%\Common Files\TaoBao\ÌÔ±¦.ico
- %Program Files%\Common Files\TaoBao\СÓÎÏ·.ico
- %User Temp%\$rar10943.tmp
- %Windows%\RtkSYUdp.exe
- %User Profile%\Quick Launch\IEXPLORE.1nk
- %User Temp%\hhhhhhh.tmp
- %Program Files%\Internet Explorer\SIGNUP\wwwwwww.exe
Other Details
This Trojan deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.200
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
- .ur1
- In HKEY_CLASSES_ROOT\.ur1
- PersistentHandler
- In HKEY_CLASSES_ROOT\.ur1
- ShellEx
- In HKEY_CLASSES_ROOT\.ur1\ShellEx
- {000214EE-0000-0000-C000-000000000046}
- In HKEY_CLASSES_ROOT\.ur1\ShellEx
- {000214F9-0000-0000-C000-000000000046}
- In HKEY_CLASSES_ROOT\.ur1\ShellEx
- {00021500-0000-0000-C000-000000000046}
- In HKEY_CLASSES_ROOT\.ur1\ShellEx
- {CABB0DA0-DA57-11CF-9974-0020AFD79762}
- In HKEY_CLASSES_ROOT\.ur1\ShellEx
- {FBF23B80-E3F0-101B-8488-00AA003E56F8}
- In HKEY_CLASSES_ROOT
- .1nk
- In HKEY_CLASSES_ROOT\.1nk
- ShellEx
- In HKEY_CLASSES_ROOT\.1nk\ShellEx
- {000214EE-0000-0000-C000-000000000046}
- In HKEY_CLASSES_ROOT\.1nk\ShellEx
- {000214F9-0000-0000-C000-000000000046}
- In HKEY_CLASSES_ROOT\.1nk\ShellEx
- {00021500-0000-0000-C000-000000000046}
- In HKEY_CLASSES_ROOT\.1nk\ShellEx
- {BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
- In HKEY_CLASSES_ROOT\.1nk
- ShellNew
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer
- DontShowMeThisDialogAgain
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons
- ClassicStartMenu
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons
- NewStartPanel
- In HKEY_CLASSES_ROOT\CLSID
- {27AEF9E8-063F-0757-829C-A93575895E80}
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
- DefaultIcon
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
- Shell
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\Shell
- Open
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\Shell\Open
- Command
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\Shell
- ÊôÐÔ
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\Shell\ÊôÐÔ
- Command
- In HKEY_CLASSES_ROOT\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
- ShellFolder
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
- {27AEF9E8-063F-0757-829C-A93575895E80}
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\.1nk\ShellNew
- Command = "rundll32.exe appwiz.cpl,NewLinkHere %1"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\DontShowMeThisDialogAgain
- CompatWarningForwwwwwww.exe = "no"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu
- {871C5380-42A0-1069-A2EA-08002B30309D} = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel
- {871C5380-42A0-1069-A2EA-08002B30309D} = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
- InfoTip = "@shdoclc.dll,-881"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}
- LocalizedString = "@shdoclc.dll,-880"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{27AEF9E8-063F-0757-829C-A93575895E80}\ShellFolder
- Attributes = "0"
Step 4
Search and delete these components
- %User Temp%\$rar10656.tmp
- %Program Files%\Common Files\TaoBao\ÌÔ±¦.ico
- %Program Files%\Common Files\TaoBao\СÓÎÏ·.ico
- %User Temp%\$rar10943.tmp
- %Windows%\RtkSYUdp.exe
- %User Profile%\Quick Launch\IEXPLORE.1nk
- %User Temp%\hhhhhhh.tmp
- %Program Files%\Internet Explorer\SIGNUP\wwwwwww.exe
Step 5
Search and delete this folder
- %Program Files%\Common Files\TaoBao
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_STARTP.SMP1. 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 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.
- %User Temp%\$RAR10~1.TMP
- %User Temp%\$RAR10~2.TMP
Step 8
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\Windows\CurrentVersion\Explorer
- RunMRU
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