TROJ_STARTP.SMHH

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.

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%\Win32Games
• %Favorites%\³£ÓÃ
• %Start Menu%\³ÌÐò

(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).. %Favorites% is the current user's Favorites folder, which is usually C:\Documents and Settings\{user name}\Favorites on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Favorites on Windows Vista and 7.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.)

Autostart Technique

This Trojan registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\explorer\
Browser Helper Objects\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}!

Other System Modifications

This Trojan deletes the following files:

• %System%\syspowerues.dll
• %System%\setup1.exe
• %Common Startup%\helpme.ink
• %User Profile%\Quick Launch\Launch Internet Explorer Browser.lnk
• %User Profile%\Quick Launch\Intenet Exploer.lnk
• %Desktop%\Intenet Exploer.lnk
• %Start Menu%\ÌÔ±¦Íø½ñÈÕÌؼÛÇø.lnk
• %Start Menu%\Intenet Exploer.lnk
• %Desktop%\Î÷ÓΡ¤±ù·â.lnk
• %User Profile%\Quick Launch\Î÷ÓΡ¤±ù·â.lnk
• %Desktop%\ÌÔ±¦Íø½ñÈÕÌؼÛÇø.lnk
• %Desktop%\СÓÎÏ·.lnk

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %Common Startup% is the system's shared Startup folder, which is usually C:\Documents and Settings\All Users\Start Menu\Programs\Startup on Windows 2000, XP, and Server 2003.. %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.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista and 7.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\internet explorer

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
HideDesktopIcons\ClassicStartMenu

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
HideDesktopIcons\NewStartPanel

HKEY_CLASSES_ROOT\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}

HKEY_CLASSES_ROOT\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\
InprocServer32

HKEY_CLASSES_ROOT\syspowerues.360SafeMode

HKEY_CLASSES_ROOT\syspowerues.360SafeMode\Clsid

HKEY_CLASSES_ROOT\CLSID\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\
ProgID

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.uri = "InternetShortcut"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes
.ink = "lnkfile"

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\{B69F34DD-F0F9-42DC-9EDD-957187DA688D}\InprocServer32
ThreadingModel = "Apartment"

Dropping Routine

This Trojan drops the following files:

• %Program Files%\Win32Games\bb.tmp
• %Program Files%\Win32Games\2xi.ico
• %Program Files%\Win32Games\2xi.vbs
• %Program Files%\Win32Games\baidu.ico
• %Program Files%\Win32Games\bingfeng.ico
• %Program Files%\Win32Games\bookmarks.dat
• %Program Files%\Win32Games\Config.ini
• %Program Files%\Win32Games\dangdangwang.ico
• %Program Files%\Win32Games\Internet.vbs
• %Program Files%\Win32Games\jiuzhou.ico
• %Program Files%\Win32Games\minigame.ico
• %Program Files%\Win32Games\minigame.vbs
• %Program Files%\Win32Games\syspowerues.dll
• %Program Files%\Win32Games\taobao.ico
• %Program Files%\Win32Games\taobao.vbs
• %Program Files%\Win32Games\Thumbs.db
• %Program Files%\Win32Games\URL.dll
• %Program Files%\Win32Games\url.txt
• %Program Files%\Win32Games\wingames.exe
• %Program Files%\Win32Games\Xianjian.ico
• %Program Files%\Win32Games\zhuoyue.ico
• %Program Files%\Win32Games\aaa.bat
• %Program Files%\Win32Games\doset.bat
• %System%\helpme.vbs
• %System%\helpme.ink
• %User Profile%\Quick Launch\Launch Internet Explorer Browser.ink
• %User Profile%\Quick Launch\Intenet Exploer.ink
• %Desktop%\Intenet Exploer.ink
• %Favorites%\³£ÓÃ\µ±µ±Íø.url
• %Favorites%\µ±µ±Íø.url
• %Favorites%\³£ÓÃ\׿ԽÍø.url
• %Favorites%\׿ԽÍø.url
• %Favorites%\³£ÓÃ\ÌÔ±¦Íø½ñÈÕÌؼÛÇø.url
• %Favorites%\ÌÔ±¦Íø½ñÈÕÌؼÛÇø.url
• %Favorites%\³£ÓÃ\Î÷ÓÎÍø.url
• %Favorites%\Î÷ÓÎÍø.url
• %Start Menu%\ÌÔ±¦Íø½ñÈÕÌؼÛÇø.ink
• %Start Menu%\Intenet Exploer.ink
• %Start Menu%\³ÌÐò\Intenet Exploer.ink
• %Favorites%\³£ÓÃ\Î÷ÓΡ¤±ù·â.url
• %Favorites%\Î÷ÓΡ¤±ù·â.url
• %Desktop%\Î÷ÓΡ¤±ù·â.ink
• %User Profile%\Quick Launch\Î÷ÓΡ¤±ù·â.ink
• %Desktop%\ÌÔ±¦Íø½ñÈÕÌؼÛÇø.ink
• %Favorites%\³£ÓÃ\СÓÎÏ·.url
• %Favorites%\СÓÎÏ·.url
• %Desktop%\СÓÎÏ·.ink
• %User Profile%\data\bookmarks.dat
• %System%\sysurl.dll

(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).. %System% is the Windows system folder, which is usually C:\Windows\System32.. %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.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista and 7.. %Favorites% is the current user's Favorites folder, which is usually C:\Documents and Settings\{user name}\Favorites on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Favorites on Windows Vista and 7.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://so1.{BLOCKED}5.net/interface?{random characters}

This report is generated via an automated analysis system.