MD5: 273d0b2f2ae1af682f087e04ae959432
SHA1: bb16bdac896c0cfd072b8f89ba98e65ba2be09b4
SHA256: 1bbdf6f1176a6949417784ad9863c2881043882cb659bb2299cd6147236b9257
SSDeep: 6144:Npqoa8aLiC/2OLSAN7gNVpNleQUohBfGPOtQciXeL/XYqGlebojSP2pjNhcAYnCH:NpqiC/2OGAtkCP4cejGSOpRK3CnIi
Size: 785989 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2008-12-24 11:00:07
Analyzed on: Windows7 SP1 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:268
rundll32.exe:2924

The Trojan injects its code into the following process(es):
No processes have been created.

Mutexes

The following mutexes were created/opened:
No objects were found.

File activity

The process %original file name%.exe:268 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\Desktop\autorun.ini (174 bytes)
C:\Users\"%CurrentUserName%"\Desktop\system3_.exe (5441 bytes)

The process rundll32.exe:2924 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\VRBDQXVL\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\ZZYWWAG3\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\XO1SK738\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\344WQOF9\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat (16 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\desktop.ini (67 bytes)

Registry activity

The process %original file name%.exe:268 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASAPI32]
"EnableConsoleTracing" = "0"
"FileTracingMask" = "4294901760"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASMANCS]
"FileDirectory" = "%windir%\tracing"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"GlobalUserOffline" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASMANCS]
"EnableConsoleTracing" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad]
"WpadLastNetwork" = "{E549E976-C5F2-4E77-819D-55BC9B7C25BC}"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASAPI32]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASMANCS]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASAPI32]
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASMANCS]
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Internet Explorer\Main]
"Default_Search_URL" = "http://www.mydreamworld.50webs.com"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASAPI32]
"ConsoleTracingMask" = "4294901760"

[HKLM\System\CurrentControlSet\Services\Schedule]
"AtTaskMaxHours" = "0"

[HKLM\SOFTWARE\Microsoft\Internet Explorer\Main]
"Start Page" = "http://www.mydreamworld.50webs.com"
"Search Page" = "http://www.mydreamworld.50webs.com"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "46 00 00 00 3C 00 00 00 09 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASAPI32]
"FileDirectory" = "%windir%\tracing"

[HKCU\Software\Microsoft\Internet Explorer\Main]
"Start Page" = "http://www.mydreamworld.50webs.com"

[HKLM\SOFTWARE\Microsoft\Internet Explorer\Main]
"Default_Page_URL" = "http://www.mydreamworld.50webs.com"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"DefaultConnectionSettings" = "46 00 00 00 0C 00 00 00 09 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Tracing\273d0b2f2ae1af682f087e04ae959432_RASMANCS]
"EnableFileTracing" = "0"
"MaxFileSize" = "1048576"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Yahoo Messengger" = "C:\Users\"%CurrentUserName%"\Desktop\system3_.exe"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

The Trojan adds the reference to itself to be executed when a user logs on:

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "Explorer.exe system3_.exe"

The Trojan deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"
"AutoConfigURL"

Dropped PE files

There are no dropped PE files.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1
File Description:
Comments:
Language: English (United Kingdom)

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 1
08552b842ce1fd79cfe906cdf599ec26

URLs

URL	IP
hxxp://hostingsolutions-26026.dsextra.com/set/setting.ini
www.balu000.0catch.com	141.8.230.97
dns.msftncsi.com
h1.ripway.com

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET POLICY Autoit Windows Automation tool User-Agent in HTTP Request - Possibly Hostile
ET TROJAN Possible Worm W32.Svich or Other Infection Request for setting.ini

Traffic

The Trojan connects to the servers at the folowing location(s):

.text

.rdata

.data

.rsrc

%f;)s

s%j.Zf

tGHt.Ht&

ItCP

tCPh

SSSSh

Cv=kAv.SCvs

Please contact the application's support team for more information.

- Attempt to initialize the CRT more than once.

- CRT not initialized

- floating point support not loaded

GetProcessWindowStation

USER32.DLL

operator

This is a compiled AutoIt script. AV researchers please email avsupport@autoitscript.com for support.

uxtheme.dll

kernel32.dll

APPSKEY

ASC 0%d

operand of unlimited repeat could match the empty string

POSIX named classes are supported only within a class

erroffset passed as NULL

POSIX collating elements are not supported

this version of PCRE is not compiled with PCRE_UTF8 support

PCRE does not support \L, \l, \N, \U, or \u

support for \P, \p, and \X has not been compiled

(*VERB) with an argument is not supported

ICMP.DLL

KERNEL32.DLL

ADVAPI32.dll

COMCTL32.dll

COMDLG32.dll

GDI32.dll

MPR.dll

ole32.dll

OLEAUT32.dll

PSAPI.DLL

SHELL32.dll

USER32.dll

USERENV.dll

VERSION.dll

WININET.dll

WINMM.dll

WSOCK32.dll

GetProcessHeap

CreatePipe

GetWindowsDirectoryW

GetCPInfo

GetConsoleOutputCP

RegDeleteKeyW

RegCreateKeyExW

RegEnumKeyExW

RegCloseKey

RegOpenKeyExW

SetViewportOrgEx

ShellExecuteExW

SHFileOperationW

ShellExecuteW

RegisterHotKey

GetKeyboardLayoutNameW

UnregisterHotKey

ExitWindowsEx

EnumThreadWindows

GetAsyncKeyState

SetKeyboardState

GetKeyboardState

GetKeyState

keybd_event

VkKeyScanA

GetKeyboardLayoutNameA

EnumWindows

EnumChildWindows

MapVirtualKeyW

CloseWindowStation

SetProcessWindowStation

OpenWindowStationW

InternetOpenUrlW

FtpOpenFileW

HttpQueryInfoW

HttpOpenRequestW

HttpSendRequestW

FtpGetFileSize

InternetCrackUrlW

zcÁ

3333333330

3333330

333333333333330

.LjR=W

.Jbjx=

^_^\^_\^[__^^_^^__^^^^___^__^\_\\_^^^^\^^_[__^^__^_^__^^\[^^_^_^^_^\_^_^^\^\^[^[[__^\^^^\-

4444444

333333333333333

444444444

33333333333333

version="3.0.0.0"

<requestedExecutionLevel

name="Microsoft.Windows.Common-Controls"

version="6.0.0.0"

publicKeyToken="6595b64144ccf1df"

W;YO.Gh

.uh}m

/M?%x

mscoree.dll

CMDLINERAW

CMDLINE

/AutoIt3ExecuteLine

/AutoIt3ExecuteScript

%s (%d) : ==> %s.:

Line %d:

Line %d (File "%s"):

%s (%d) : ==> %s:

AutoIt script files (*.au3, *.a3x)

*.au3;*.a3x

All files (*.*)

04090000

%u.%u.%u.%u

0.0.0.0

Mddddd

FTPSETPROXY

GUICTRLRECVMSG

GUICTRLSENDMSG

GUIGETMSG

GUIREGISTERMSG

HOTKEYSET

HTTPSETPROXY

ISKEYWORD

MSGBOX

REGENUMKEY

SHELLEXECUTE

SHELLEXECUTEWAIT

TCPACCEPT

TCPCLOSESOCKET

TCPCONNECT

TCPLISTEN

TCPNAMETOIP

TCPRECV

TCPSEND

TCPSHUTDOWN

TCPSTARTUP

TRAYGETMSG

UDPBIND

UDPCLOSESOCKET

UDPOPEN

UDPRECV

UDPSEND

UDPSHUTDOWN

UDPSTARTUP

URLDOWNLOADTOFILE

%s (%d) : ==> %s:

\??\%s

GUI_RUNDEFMSG

FtpBinaryMode

SendKeyDelay

SendKeyDownDelay

TCPTimeout

AUTOITCALLVARIABLE%d

Keyword

AutoIt.Error

Null Object assignment in FOR..IN loop

Incorrect Object type in FOR..IN loop

HOTKEYPRESSED

AUTOITEXE

WINDOWSDIR

SOFTWARE\Microsoft\Windows\CurrentVersion

SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

3, 3, 0, 0

HKEY_LOCAL_MACHINE

HKEY_CLASSES_ROOT

HKEY_CURRENT_CONFIG

HKEY_CURRENT_USER

HKEY_USERS

%d/d/d

c:\%original file name%.exe

C:\%original file name%.exe

AutoIt supports the __stdcall (WINAPI) and __cdecl calling conventions. The __stdcall (WINAPI) convention is used by default but __cdecl can be used instead. See the DllCall() documentation for details on changing the calling convention.

Missing operator in expression."Unbalanced brackets in expression.

Error parsing function call.0Incorrect number of parameters in function call.'"ReDim" used without an array variable.>Illegal text at the end of statement (one statement per line).1"If" statement has no matching "EndIf" statement.1"Else" statement with no matching "If" statement.2"EndIf" statement with no matching "If" statement.7Too many "Else" statements for matching "If" statement.3"While" statement has no matching "Wend" statement.4"Wend" statement with no matching "While" statement.%Variable used without being declared.XArray variable has incorrect number of subscripts or subscript dimension range exceeded.)Array variable subscript badly formatted.'Subscript used with non-Array variable.&Too many subscripts used for an array.0Missing subscript dimensions in "Dim" statement.NNo variable given for "Dim", "Local", "Global", "Struct" or "Const" statement.0Expected a "=" operator in assignment statement.*Invalid keyword at the start of this line.

*Unable to get a list of running processes.*Missing separator character after keyword.

Invalid element in a DllStruct.*Unknown option or bad parameter specified.&Unable to load the internet libraries./"Struct" statement has no matching "EndStruct".HUnable to open file, the maximum number of open files has been exceeded.

Invalid file filter given.*Expected a variable in user function call.1"Do" statement has no matching "Until" statement.2"Until" statement with no matching "Do" statement.#"For" statement is badly formatted.2"Next" statement with no matching "For" statement.N"ExitLoop/ContinueLoop" statements only valid from inside a For/Do/While loop.1"For" statement has no matching "Next" statement.@"Case" statement with no matching "Select"or "Switch" statement.:"EndSelect" statement with no matching "Select" statement.ORecursion level has been exceeded - AutoIt will quit to prevent stack overflow.

Badly formated Enum statement!Badly formated variable or macro.3This keyword cannot be used after a "Then" keyword.>"Select" statement is missing "EndSelect" or "Case" statement. "If" statements must have a "Then" keyword. Badly formated Struct statement."Cannot assign values to constants..Cannot make existing variables into constants.9Only Object-type variables allowed in a "With" statement.v"long_ptr", "int_ptr" and "short_ptr" DllCall() types have been deprecated. Use "long*", "int*" and "short*" instead.-Object referenced outside a "With" statement.)Nested "With" statements are not allowed."Variable must be of type "Object".1The requested action with this object has failed.8Variable appears more than once in function declaration.2ReDim array can not be initialized in this manner.1An array variable can not be used in this manner.

Can not redeclare a constant.5Can not redeclare a parameter inside a user function.HCan pass constants by reference only to parameters with "Const" keyword.*Can not initialize a variable with itself.$Incorrect way to use this parameter.:"EndSwitch" statement with no matching "Switch" statement.>"Switch" statement is missing "EndSwitch" or "Case" statement.H"ContinueCase" statement with no matching "Select"or "Switch" statement.

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   %original file name%.exe:268
   rundll32.exe:2924
   

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:
   

   C:\Users\"%CurrentUserName%"\Desktop\autorun.ini (174 bytes)
   C:\Users\"%CurrentUserName%"\Desktop\system3_.exe (5441 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\VRBDQXVL\desktop.ini (67 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\ZZYWWAG3\desktop.ini (67 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\XO1SK738\desktop.ini (67 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\desktop.ini (67 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\344WQOF9\desktop.ini (67 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat (16 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\desktop.ini (67 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Yahoo Messengger" = "C:\Users\"%CurrentUserName%"\Desktop\system3_.exe"

5. Remove the references to the Trojan by modifying the following registry value(s) (How to Work with System Registry):
   

   [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   "Shell" = "Explorer.exe system3_.exe"

6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.