Gen.Variant.Kazy.723308_0cb533e444 – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1516
YOUTUB~1.EXE:128

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:1516 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\IXP000.TMP\64bit.exe (7960 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\YOUTUB~1.EXE (49498 bytes)

The process YOUTUB~1.EXE:128 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\nsn3.tmp\Dealio_install.bmp (1552 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\ioSpecial.ini (4681 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\InstallOptions.dll (14 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\modern-wizard.bmp (784 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn2.tmp (7382 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsh1.tmp (0 bytes)

Registry activity

The process %original file name%.exe:1516 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "64 7B 06 73 96 2E 30 57 95 09 6A 97 E8 67 3E C3"

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\RunOnce]
"wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"

The process YOUTUB~1.EXE:128 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C0 9C 7D D4 FB 45 B9 F3 C6 9B 40 4C 6E 76 EE 74"

[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\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

Dropped PE files

MD5	File path
f447db340c60e3727da66328ed090e6e	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\IXP000.TMP\64bit.exe
875bae6178eae1bc15e80497017a79e3	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\IXP000.TMP\YOUTUB~1.EXE
271b5d1043c4402f08ddeae383f6979c	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\nsn3.tmp\InstallOptions.dll

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:1516
YOUTUB~1.EXE:128
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\64bit.exe (7960 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\YOUTUB~1.EXE (49498 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\Dealio_install.bmp (1552 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\ioSpecial.ini (4681 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\InstallOptions.dll (14 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn3.tmp\modern-wizard.bmp (784 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsn2.tmp (7382 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"

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

Static Analysis

VersionInfo

Company Name: Microsoft Corporation
Product Name: Internet Explorer
Product Version: 11.00.9600.16428
Legal Copyright: (c) Microsoft Corporation. All rights reserved.
Legal Trademarks:
Original Filename: WEXTRACT.EXE .MUI
Internal Name: Wextract
File Version: 11.00.9600.16428 (winblue_gdr.131013-1700)
File Description: Win32 Cabinet Self-Extractor
Comments:
Language: Language Neutral

Company Name: Microsoft CorporationProduct Name: Internet ExplorerProduct Version: 11.00.9600.16428Legal Copyright: (c) Microsoft Corporation. All rights reserved.Legal Trademarks: Original Filename: WEXTRACT.EXE .MUIInternal Name: Wextract File Version: 11.00.9600.16428 (winblue_gdr.131013-1700)File Description: Win32 Cabinet Self-Extractor Comments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	26060	26112	4.42567	e9bf1a1e456a9a811b1b86e6602e3636
.data	32768	6796	1024	2.20139	317f8a934ee443eee01c2a315bde9ca1
.idata	40960	4216	4608	3.49941	d8675ba112ef922c6057a02546757a1a
.rsrc	49152	3515739	3515904	5.54165	a9deef2e42b8405da9f1f19f5763db4f
.reloc	3567616	5038	5120	2.58043	83de2f9b2c95be6fea06bced7e8a058e

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

Strings from Dumps

%original file name%.exe_1516:

.text

`.data

.idata

@.rsrc

@.reloc

Invalid parameter passed to C runtime function.

advapi32.dll

setupx.dll

setupapi.dll

advpack.dll

wininit.ini

Software\Microsoft\Windows\CurrentVersion\App Paths

ADMQCMD

USRQCMD

FINISHMSG

IXPd.TMP

msdownld.tmp

TMP4351$.TMP

wextract.pdb

PSSSSSSh

SSSh

PSSShp

PSShp

rundll32.exe %sadvpack.dll,DelNodeRunDLL32 "%s"

System\CurrentControlSet\Control\Session Manager\FileRenameOperations

wextract_cleanup%d

Command.com /c %s

rundll32.exe %s,InstallHinfSection %s 128 %s

Software\Microsoft\Windows\CurrentVersion\RunOnce

%s /D:%s

PendingFileRenameOperations

SHELL32.DLL

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\

RegCreateKeyExA

RegOpenKeyExA

RegQueryInfoKeyA

RegCloseKey

ADVAPI32.dll

GetWindowsDirectoryA

KERNEL32.dll

GDI32.dll

ExitWindowsEx

MsgWaitForMultipleObjects

USER32.dll

_amsg_exit

_acmdln

msvcrt.dll

COMCTL32.dll

Cabinet.dll

VERSION.dll

)-.Yln

YOUTUB~1.EXE

64bit.exe

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name="Microsoft.Windows.Common-Controls"

version="6.0.0.0"

publicKeyToken="6595b64144ccf1df"

Kernel32.dll

Please read the following license agreement. Press the PAGE DOWN key to see the rest of the agreement.

CFailed to get disk space information from: %s.

System Message: %s.&A required resource cannot be located. Are you sure you want to cancel?

8Unable to retrieve operating system version information.!Memory allocation request failed.

Filetable full.ÃŠn not change to destination folder.

Setup could not find a drive with %s KB free disk space to install the program. Please free up some space first and press RETRY or press CANCEL to exit setup.KThat folder is invalid. Please make sure the folder exists and is writable.IYou must specify a folder with fully qualified pathname or choose Cancel.KKan geen informatie krijgen over schijfruimte van: %s.

Systeemmelding: %s.#Kan een benodigde bron niet vinden."Weet u zeker dat u wilt annuleren?

Setup kan geen station vinden met %s kB beschikbare schijfruimte om het programma te installeren. Maak schijfruimte vrij en probeer het opnieuw of annuleer de installatie.QDe map is ongeldig. Controleer of de map bestaat en of deze niet alleen-lezen is.DU moet een map met een volledig pad opgeven of op Annuleren klikken.

!Could not update folder edit box.5Could not load functions required for browser dialog.7Could not load Shell32.dll required for browser dialog.

(Error creating process . Reason: %s1The cluster size in this system is not supported.,A required resource appears to be corrupted.QWindows 95 or Windows NT 4.0 Beta 2 or greater is required for this installation.

Error loading %shGetProcAddress() failed on function '%s'. Possible reason: incorrect version of advpack.dll being used./Windows 95 or Windows NT is required to install

Could not create folder '%s'

To install this program, you need %s KB disk space on drive %s. It is recommended that you free up the required disk space before you continue.

-Kan het invoervak voor de map niet bijwerken.KKan de functies die vereist zijn voor het bladerdialoogvenster, niet laden.UKan het bestand Shell32.dll dat vereist is voor het bladerdialoogvenster, niet laden.

-Fout bij het maken van proces . Reden: %s8De clustergrootte in dit systeem wordt niet ondersteund. Een vereiste bron lijkt beschadigd te zijn.^Voor deze installatie is Windows 95 of Windows NT 4.0 B

Fout bij het laden van %s.uGetProcAddress() is mislukt bij functie %s. Mogelijke reden: er wordt een incorrecte versie van advpack.dll gebruikt.7Voor de installatie is Windows 95 of Windows NT vereist

Kan de map %s niet maken.

U hebt %s kB schijfruimte nodig op station %s om het programma te installeren. Het wordt aanbevolen de benodigde schijfruimte vrij te maken voordat u verdergaat.

Error retrieving Windows folder

$NT Shutdown: OpenProcessToken error.)NT Shutdown: AdjustTokenPrivileges error.!NT Shutdown: ExitWindowsEx error.}Extracting file failed. It is most likely caused by low memory (low disk space for swapping file) or corrupted Cabinet file.aThe setup program could not retrieve the volume information for drive (%s) .

System message: %s.xSetup could not find a drive with %s KB free disk space to install the program. Please free up some space and try again.eThe installation program appears to be damaged or corrupted. Contact the vendor of this application.

$Fout bij het ophalen van Windows-map

NT wordt afgesloten: OpenProcessToken-fout.0NT wordt afgesloten: AdjustTokenPrivileges-fout.(NT wordt afgesloten: ExitWindowsEx-fout.

Het uitpakken van het bestand is mislukt. Waarschijnlijk door gebrek aan geheugen (te weinig schijfruimte voor wisselbestand) of beschadigd CAB-bestand.bHet installatieprogramma kan de volumegegevens voor station (%s) niet ophalen.

Systeembericht: %s.

Setup kan geen station vinden met %s kB vrije schijfruimte voor de installatie van het programma. Maak schijfruimte vrij en probeer het opnieuw.\Het installatieprogramma is beschadigd. Neem contact op met de verkoper van deze toepassing.

/C: -- Override Install Command defined by author.

eAnother copy of the '%s' package is already running on your system. Do you want to run another copy?

Could not find the file: %s.

jEr wordt al een exemplaar van het pakket %s op de computer uitgevoerd. Wilt u een extra exemplaar starten?

Kan het bestand %s niet vinden.

:The folder '%s' does not exist. Do you want to create it?hAnother copy of the '%s' package is already running on your system. You can only run one copy at a time.OThe '%s' package is not compatible with the version of Windows you are running.SThe '%s' package is not compatible with the version of the file: %s on your system.

.De map %s bestaat niet. Wilt u deze map maken?hHet pakket %s is al op het systeem ge

n exemplaar tegelijkertijd gebruiken.FHet pakket %s is niet compatibel met de Windows-versie die u gebruikt.QHet pakket %s is niet compatibel met de versie van het bestand %s op de computer.

11.00.9600.16428 (winblue_gdr.131013-1700)

WEXTRACT.EXE .MUI

11.00.9600.16428

YOUTUB~1.EXE_128:

.text

`.rdata

@.data

.ndata

.rsrc

uDSSh

.DEFAULT\Control Panel\International

Software\Microsoft\Windows\CurrentVersion

GetWindowsDirectoryA

KERNEL32.dll

ExitWindowsEx

USER32.dll

GDI32.dll

SHFileOperationA

ShellExecuteA

SHELL32.dll

RegEnumKeyA

RegCreateKeyExA

RegCloseKey

RegDeleteKeyA

RegOpenKeyExA

ADVAPI32.dll

COMCTL32.dll

ole32.dll

VERSION.dll

verifying installer: %d%%

unpacking data: %d%%

... %d%%

hXXp://nsis.sf.net/NSIS_Error

~nsu.tmp

%u.%u%s%s

RegDeleteKeyExA

%s=%s

*?|/":

CUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsn3.tmp\InstallOptions.dll

Tube Downloader 2.5.3.\r\n\r\nIt is recommended that you close all other applications before starting Setup. This will make it possible to update relevant system files without having to reboot your computer.\r\n\r\nClick Next to continue.

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsn3.tmp\InstallOptions.dll

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsn3.tmp

installation of YouTube Downloader 2.5.3.\r\n\r\nIt is recommended that you close all other applications before starting Setup. This will make it possible to update relevant system files without having to reboot your computer.\r\n\r\nClick Next to continue.

COMDLG32.DLL

FC:\Windows\system32\stdole2.tlb

%Program Files%\Microsoft Visual Studio\VB98\Flash9f.oca

frmLogin

modExecCmd

modGetHTMLFromURL

modURLEncoding

%Program Files%\Microsoft Visual Studio\VB98\VB6.OLB

cmdOk

lblURL

shell32.dll

VBA6.DLL

&cmdCancel

txtPassword

LoginSucceeded

Password

Comctl32.dll

LxcmdAbort

C:\Windows\system32\MSVBVM60.DLL\3

%Program Files%\Microsoft Visual Studio\VB98\MSCOMCTL.oca

advapi32.dll

shdocvw.dll

wininet.dll

InternetOpenUrlA

OWebBrowser1

SC:\Windows\system32\ieframe.oca

cmdPlayVideo

cmdDownloadOptions

txtURL

lblWebLink

cmdShowFiles

cmdPickFile

cmdDownloadFolder

@.reloc

comdlg32.dll

InstallOptions.dll

PASSWORD

Field %d

All Files|*.*

O%D=s

YouTube Downloader 2.5.3 Setup

nsn3.tmp

his wizard will guide you through the installation of YouTube Downloader 2.5.3.\r\n\r\nIt is recommended that you close all other applications before starting Setup. This will make it possible to update relevant system files without having to reboot your computer.\r\n\r\nClick Next to continue.

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\YOUTUB~1.EXE

%Program Files%\YouTube Downloader

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP

YOUTUB~1.EXE

CUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsh1.tmp

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\

1114414

ard will guide you through the installation of YouTube Downloader 2.5.3.\r\n\r\nIt is recommended that you close all other applications before starting Setup. This will make it possible to update relevant system files without having to reboot your computer.\r\n\r\nClick Next to continue.

1074398204

1441914

)-.Yln

Nullsoft Install System v2.39

.CommonDialog

.VBError

.clsAnimControl

comctl32.dll

Show video file URL

hXXp://youtubedownload.altervista.org/notifier.htm

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps