Worm.Win32.AutoItGen_c0581e30fe – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Worm creates the following process(es):

%original file name%.exe:1736

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

aYiUePMJAViJZhaMMI.exe:892
RegAsm.exe:1664

Mutexes

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

File activity

The process %original file name%.exe:1736 makes changes in the file system.

The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMI.exe (7905 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (3225 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut3.tmp (5913 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (196 bytes)
%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMIL.au3 (1960 bytes)
%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMM (1281 bytes)

The Worm deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut3.tmp (0 bytes)

The process RegAsm.exe:1664 makes changes in the file system.

The Worm creates and/or writes to the following file(s):

%Program Files%\NAT Service\natsv.exe (53 bytes)
%Documents and Settings%\%current user%\Application Data\75ED9567-AA58-4C8E-A8EA-3CAD7C47AB03\run.dat (8 bytes)

Registry activity

The process aYiUePMJAViJZhaMMI.exe:892 makes changes in the system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "24 FF FC 3C A5 E1 DA 41 15 C8 6D C1 3A 7F 3E 91"

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

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

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

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

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
"Microsoft Corporation aYiUePMJAViJZhaMMI" = "%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMI.exe %Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMIL.au3"

The process %original file name%.exe:1736 makes changes in the system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "99 3C BB 23 F2 73 77 F5 B3 DA AC A9 73 67 B5 9E"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data]
"aYiUePMJAViJZhaMMI.exe" = "AutoIt v3 Script"

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

"ProxyBypass" = "1"

The process RegAsm.exe:1664 makes changes in the system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1B 83 C2 3D 73 76 8E 96 70 7C 19 15 74 24 31 AB"

[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 Worm 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"

Dropped PE files

MD5	File path
6cf9a0d989715773d49d5ff3ad601db3	c:\Documents and Settings\"%CurrentUserName%"\Application Data\aYiUePMJAViJZhaMMI.exe
c08b53d25dab60ba0dba975b46d0b27a	c:\Program Files\NAT Service\natsv.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

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

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:1736
Delete the original Worm file.
Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMI.exe (7905 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut2.tmp (3225 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut3.tmp (5913 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aut1.tmp (196 bytes)
%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMIL.au3 (1960 bytes)
%Program Files%\NAT Service\natsv.exe (53 bytes)
%Documents and Settings%\%current user%\Application Data\75ED9567-AA58-4C8E-A8EA-3CAD7C47AB03\run.dat (8 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
"Microsoft Corporation aYiUePMJAViJZhaMMI" = "%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMI.exe %Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMIL.au3"

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

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

Static Analysis

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename: CZDPVGO.exe
Internal Name: CZDPVGO.exe
File Version:
File Description:
Comments:
Language: English (United States)

Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: CZDPVGO.exeInternal Name: CZDPVGO.exeFile Version: File Description: Comments: Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	401077	401408	4.64621	b6dcc0177711ed3774c81c76676d244a
.rdata	405504	57384	57856	3.48802	70181421912e322d2d4c9a203a38169a
.data	466944	110328	10752	2.74223	ed3899314fffe7a5ca2abf982bc3fe71
.rsrc	577536	61671	61952	4.17504	06e6b6cbbff728ed95051c8bf16dbbb6

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

aYiUePMJAViJZhaMMI.exe_892:

.text

`.rdata

@.data

.rsrc

@.reloc

s%j.Zf

8crtsu

:crts

crts

GetProcessWindowStation

operator

uxtheme.dll

kernel32.dll

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{name}, \U, or \u

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

this version of PCRE is not compiled with PCRE_UCP support

ICMP.DLL

advapi32.dll

RegDeleteKeyExW

Error text not found (please report)

WSOCK32.dll

VERSION.dll

WINMM.dll

COMCTL32.dll

MPR.dll

InternetCrackUrlW

HttpQueryInfoW

HttpOpenRequestW

HttpSendRequestW

FtpOpenFileW

FtpGetFileSize

InternetOpenUrlW

WININET.dll

PSAPI.DLL

USERENV.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

zcÃ

L.aVFY)

.ijjrc

g%D`-

sssh6

uW.MW

3.3/464(5,5054585

8 8$8(8,808

= =$=(=,=0=4=8=

0 0$0(0,0004080

:*;3;?;|;

11

2 323[3.5

? ?@?`?

= =$=(=,=0=4=

5 5$5(5,5054585

CADjD%D

mscoree.dll

nKERNEL32.DLL

- Attempt to initialize the CRT more than once.

- CRT not initialized

- floating point support not loaded

WUSER32.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 (*.*)

#NoAutoIt3Execute

APPSKEY

Line %d:

04090000

%u.%u.%u.%u

0.0.0.0

Mddddd

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

UDPSTARTUP

UDPSHUTDOWN

UDPSEND

UDPRECV

UDPOPEN

UDPCLOSESOCKET

UDPBIND

TRAYGETMSG

TCPSTARTUP

TCPSHUTDOWN

TCPSEND

TCPRECV

TCPNAMETOIP

TCPLISTEN

TCPCONNECT

TCPCLOSESOCKET

TCPACCEPT

SHELLEXECUTEWAIT

SHELLEXECUTE

REGENUMKEY

MSGBOX

ISKEYWORD

HTTPSETUSERAGENT

HTTPSETPROXY

HOTKEYSET

GUIREGISTERMSG

GUIGETMSG

GUICTRLSENDMSG

GUICTRLRECVMSG

FTPSETPROXY

\??\%s

GUI_RUNDEFMSG

SendKeyDelay

SendKeyDownDelay

TCPTimeout

AUTOITCALLVARIABLE%d

255.255.255.255

Keyword

AutoIt.Error

Null Object assignment in FOR..IN loop

Incorrect Object type in FOR..IN loop

HOTKEYPRESSED

AUTOITEXE

WINDOWSDIR

3, 3, 8, 0

HKEY_LOCAL_MACHINE

HKEY_CLASSES_ROOT

HKEY_CURRENT_CONFIG

HKEY_CURRENT_USER

HKEY_USERS

%d/d/d

%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMI.exe

:%Documents and Settings%\%current user%\Application Data\aYiUePMJAViJZhaMMIL.au3

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.

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.

hXXp://VVV.autoitscript.com/autoit3/

AutoIt3.exe

aYiUePMJAViJZhaMMI.exe_892_rwx_01350000_00001000:

.rsrc

RegAsm.exe_1664:

.text

`.reloc

B.rsrc

/.ffefefeeffe

lSystem.Resources.ResourceReader, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089#System.Resources.RuntimeResourceSet

sÃžUK

v2.0.50727

NanoCore Client.exe

Microsoft.VisualBasic

System.Windows.Forms

System.Drawing

kernel32.dll

psapi.dll

advapi32.dll

ntdll.dll

dnsapi.dll

ClientLoaderForm.resources

Microsoft.VisualBasic.ApplicationServices

Microsoft.VisualBasic.CompilerServices

Operators

Microsoft.VisualBasic.Devices

Microsoft.Win32

RegistryKey

NanoCore.ClientPlugin

NanoCore.ClientPluginHost

System.CodeDom.Compiler

System.Collections.Generic

KeyValuePair`2

System.Collections

System.ComponentModel

System.Diagnostics

ProcessWindowStyle

InvalidOperationException

System.IO

System.IO.Compression

System.Net

System.Net.Sockets

SocketAsyncOperation

OperatingSystem

System.Reflection

System.Runtime.CompilerServices

System.Runtime.InteropServices

System.Security.AccessControl

System.Security.Cryptography

System.Security.Principal

WindowsBuiltInRole

WindowsIdentity

WindowsPrincipal

System.Text

System.Threading

FormWindowState

#=qmLTtz8OEDrkzFTzYkI_Dg1dvKwiGw9blNcZSU_QqMsg=

.cctor

.ctor

ClosePipe

PipeExists

#=qNn8WS2rooUJUoMsG84mQ7PkK4IQF8$E42cyDjfL7Kqc=

#=qwSqLSPEuM8lJy4sOeuH92YjPodcLquqdG$OodozwC60=

#=qiY1B9yU2oVkPHxhn$y67SFTP8x1Jb0botGqdUGkdpQg=

CreatePipe

PipeCreated

#=q85afbI_HcqBFOZnC0iAqsNghLb3LsuyjFtpLEYYoPX8=

#=q$fGRvwQxjFKeY$SH10p0pyPTU$R77VMKr3CcLFQeQ2Y=

#=q6wR5WMLGkL9afTpqmWsw9g==

SetThreadExecutionState

RegOpenKeyEx

RegCloseKey

ContainsKey

PipeClosed

get_Key

GetExecutingAssembly

set_Key

get_ExecutablePath

OpenSubKey

set_UseShellExecute

set_WindowStyle

GetPublicKeyToken

get_Port

get_LastOperation

set_WindowState

8.0.0.0

System.Windows.Forms.Form

My.MyProject.Forms

4System.Web.Services.Protocols.SoapHttpClientProtocol

$b03720fd-55ab-426b-839f-fb3f242fdd45

1.2.2.0

_CorExeMain

mscoree.dll

7%4u6!

'`P.IU

[G%u

&.rBB

RegAsm.exe_1664_rwx_00400000_00038000:

.text

`.reloc

B.rsrc

/.ffefefeeffe

lSystem.Resources.ResourceReader, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089#System.Resources.RuntimeResourceSet

sÃžUK

v2.0.50727

NanoCore Client.exe

Microsoft.VisualBasic

System.Windows.Forms

System.Drawing

kernel32.dll

psapi.dll

advapi32.dll

ntdll.dll

dnsapi.dll

ClientLoaderForm.resources

Microsoft.VisualBasic.ApplicationServices

Microsoft.VisualBasic.CompilerServices

Operators

Microsoft.VisualBasic.Devices

Microsoft.Win32

RegistryKey

NanoCore.ClientPlugin

NanoCore.ClientPluginHost

System.CodeDom.Compiler

System.Collections.Generic

KeyValuePair`2

System.Collections

System.ComponentModel

System.Diagnostics

ProcessWindowStyle

InvalidOperationException

System.IO

System.IO.Compression

System.Net

System.Net.Sockets

SocketAsyncOperation

OperatingSystem

System.Reflection

System.Runtime.CompilerServices

System.Runtime.InteropServices

System.Security.AccessControl

System.Security.Cryptography

System.Security.Principal

WindowsBuiltInRole

WindowsIdentity

WindowsPrincipal

System.Text

System.Threading

FormWindowState

#=qmLTtz8OEDrkzFTzYkI_Dg1dvKwiGw9blNcZSU_QqMsg=

.cctor

.ctor

ClosePipe

PipeExists

#=qNn8WS2rooUJUoMsG84mQ7PkK4IQF8$E42cyDjfL7Kqc=

#=qwSqLSPEuM8lJy4sOeuH92YjPodcLquqdG$OodozwC60=

#=qiY1B9yU2oVkPHxhn$y67SFTP8x1Jb0botGqdUGkdpQg=

CreatePipe

PipeCreated

#=q85afbI_HcqBFOZnC0iAqsNghLb3LsuyjFtpLEYYoPX8=

#=q$fGRvwQxjFKeY$SH10p0pyPTU$R77VMKr3CcLFQeQ2Y=

#=q6wR5WMLGkL9afTpqmWsw9g==

SetThreadExecutionState

RegOpenKeyEx

RegCloseKey

ContainsKey

PipeClosed

get_Key

GetExecutingAssembly

set_Key

get_ExecutablePath

OpenSubKey

set_UseShellExecute

set_WindowStyle

GetPublicKeyToken

get_Port

get_LastOperation

set_WindowState

8.0.0.0

System.Windows.Forms.Form

My.MyProject.Forms

4System.Web.Services.Protocols.SoapHttpClientProtocol

$b03720fd-55ab-426b-839f-fb3f242fdd45

1.2.2.0

_CorExeMain

mscoree.dll

7%4u6!

'`P.IU

[G%u

&.rBB

RegAsm.exe_1664_rwx_009BA000_00002000:

CRTy

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps