MD5: 469a03763fa47736ec6463ff4067ef3b
SHA1: 6384ff6a18cc1447b9678e94b5e51423f65e1d2b
SHA256: 85be99755ba757d3d53b133ae4c59e37031fd21ec768f77dc6b4b3e37f1166da
SSDeep: 24576:P4lavt0LkLL9IMixoEgeaD0LI2S2P 3csIukjq9MmCS:Kkwkn9IMHeaD0XSZ3oaPCS
Size: 1205760 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2015-07-01 12:30:58
Analyzed on: WindowsXP SP3 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:656

The Trojan injects its code into the following process(es):

4212.exe:1096

Mutexes

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

File activity

The process 4212.exe:1096 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Program Files%\NAT Service\natsv.exe (1281 bytes)
%Documents and Settings%\%current user%\Application Data\75ED9567-AA58-4C8E-A8EA-3CAD7C47AB03\run.dat (8 bytes)

The process %original file name%.exe:656 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\gcsblqj (5889 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (3281 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\4212\4212.exe (212 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (2 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\gcsblqj (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (0 bytes)

Registry activity

The process 4212.exe:1096 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F4 AA 82 5E 1A 19 F4 40 22 63 C0 6C D0 41 A4 EB"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NAT Service" = "%Program Files%\NAT Service\natsv.exe"

The process %original file name%.exe:656 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\4212]
"4212.exe" = "4212"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

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

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

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:
File Description:
Comments:
Language: Language Neutral

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Web Traffic was not found.

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

.text

`.rdata

@.data

.rsrc

@.reloc

PSSSSSSh

Gt.Ht$

t.jGZf;

PSSShD

PVSShD

f;Crt

?#%X.y

GetProcessWindowStation

operator

This is a compiled AutoIt script. AV researchers please email [email protected] for support.

kernel32.dll

oleaut32.dll

RegDeleteKeyExW

advapi32.dll

Error text not found (please report)

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 compiled without UTF support

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

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

this version of PCRE is not compiled with Unicode property support

\N is not supported in a class

WSOCK32.dll

VERSION.dll

WINMM.dll

COMCTL32.dll

MPR.dll

InternetCrackUrlW

HttpQueryInfoW

HttpOpenRequestW

HttpSendRequestW

FtpOpenFileW

FtpGetFileSize

InternetOpenUrlW

WININET.dll

PSAPI.DLL

IPHLPAPI.DLL

USERENV.dll

UxTheme.dll

GetProcessHeap

CreatePipe

GetWindowsDirectoryW

KERNEL32.dll

OpenWindowStationW

SetProcessWindowStation

CloseWindowStation

MapVirtualKeyW

EnumChildWindows

EnumWindows

VkKeyScanW

GetKeyState

GetKeyboardState

SetKeyboardState

GetAsyncKeyState

keybd_event

EnumThreadWindows

ExitWindowsEx

UnregisterHotKey

RegisterHotKey

GetKeyboardLayoutNameW

USER32.dll

SetViewportOrgEx

GDI32.dll

COMDLG32.dll

RegOpenKeyExW

RegCloseKey

RegCreateKeyExW

RegEnumKeyExW

RegDeleteKeyW

ADVAPI32.dll

ShellExecuteW

SHFileOperationW

ShellExecuteExW

SHELL32.dll

ole32.dll

OLEAUT32.dll

GetCPInfo

zcÁ

n..GGHHH

n...GGHHH

n ....HGHHHH

n  ....G.HHH

~~~~{~{{{{

n!! ....HGHHHH

n!!  .....HHHHHH

!!!  ....GGHHH

!!"".....HHHHnv

"""...-.nv

J:\ys

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Jû\

}%cp#

Jli;A.TKe

%dQEH

L.Qu:

;F.An

R(%sl

$2B.zI_@

R.rG/

H7W.KAu

lq.px

7K.pP

qJI.Zf

fx.wl2Q/&TQ

t:ù

X4c.Lj

I.FF^Y

%UB&W

q.fxh

j:\a7Q

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Yx:Z#%d

6%`13!"6

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(#%d)$

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n.WG_{

Na.zG

<assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" language="*" processorArchitecture="*" publicKeyToken="6595b64144ccf1df"/>

<requestedExecutionLevel level="asInvoker" uiAccess="false"/>

<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>

<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>

<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>

<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>

2 3(393@3

5"5(5,52565<5@5

5W5C5V5_5r5

9’9S9x9

9 9$9(9,9094989<9@9

1/2g2

: :$:(:,:0:4:8:<:@:

7-747v7}7

< <$<<<@<

mscoree.dll

combase.dll

- CRT not initialized

- Attempt to initialize the CRT more than once.

- floating point support not loaded

USER32.DLL

>>>AUTOIT NO CMDEXECUTE<<<

CMDLINERAW

CMDLINE

/AutoIt3ExecuteLine

/AutoIt3ExecuteScript

APPSKEY

789:;<=>?

FTPSETPROXY

GUICTRLRECVMSG

GUICTRLSENDMSG

GUIGETMSG

GUIREGISTERMSG

HOTKEYSET

HTTPSETPROXY

HTTPSETUSERAGENT

ISKEYWORD

MSGBOX

REGENUMKEY

SHELLEXECUTE

SHELLEXECUTEWAIT

TCPACCEPT

TCPCLOSESOCKET

TCPCONNECT

TCPLISTEN

TCPNAMETOIP

TCPRECV

TCPSEND

TCPSHUTDOWN

TCPSTARTUP

TRAYGETMSG

UDPBIND

UDPCLOSESOCKET

UDPOPEN

UDPRECV

UDPSEND

UDPSHUTDOWN

UDPSTARTUP

SendKeyDelay

SendKeyDownDelay

TCPTimeout

WINDOWSDIR

AUTOITEXE

HOTKEYPRESSED

D%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

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

\??\%s

GUI_RUNDEFMSG

AUTOITCALLVARIABLE%d

255.255.255.255

Keyword

AUTOIT.ERROR

Null Object assignment in FOR..IN loop

Incorrect Object type in FOR..IN loop

3, 3, 10, 2

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.#Variable subscript badly formatted.*Subscript used on non-accessible 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.

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.K"ContinueLoop" statement with no matching "While", "Do" or "For" statement.

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.&Cannot make existing variables static.4Cannot make static variables into regular variables.

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.

String missing closing quote.!Badly formated variable or macro.*Missing separator character after keyword.

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:656

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

   %Program Files%\NAT Service\natsv.exe (1281 bytes)
   %Documents and Settings%\%current user%\Application Data\75ED9567-AA58-4C8E-A8EA-3CAD7C47AB03\run.dat (8 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\gcsblqj (5889 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (3281 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\4212\4212.exe (212 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (2 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "NAT Service" = "%Program Files%\NAT Service\natsv.exe"

5. Reboot the computer.
   

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