Trojan.NSIS.StartPage_29610c51f4 – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

d6zkSXv2h4AYN7BR.exe:1048

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

%original file name%.exe:244

Mutexes

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

File activity

The process %original file name%.exe:244 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\d6zkSXv2h4AYN7BR.exe (3737 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wDeyrXy4QzQG4ele (8 bytes)
%Documents and Settings%\%current user%\Application Data\Reader\jdwI0UhRtqkN.exe (8657 bytes)
%System%\drivers\etc\hosts (832 bytes)

The process d6zkSXv2h4AYN7BR.exe:1048 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\nsu2.tmp (5312 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsp3.tmp\modern-header.bmp (9 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsp3.tmp\modern-wizard.bmp (5520 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\nsp3.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsu1.tmp (0 bytes)

Registry activity

The process %original file name%.exe:244 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "FC A8 D9 1C 51 92 94 F2 C4 13 D6 EA 45 AE AD 92"

[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\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"d6zkSXv2h4AYN7BR.exe" = "d6zkSXv2h4AYN7BR"

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

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

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

[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"

"Personal" = "%Documents and Settings%\%current user%\My Documents"

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

[HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "%Documents and Settings%\%current user%\Application Data\Reader\jdwI0UhRtqkN.exe,explorer.exe"

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:

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

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

"IntranetName" = "1"

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

"ProxyBypass" = "1"

The process d6zkSXv2h4AYN7BR.exe:1048 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EE FF A2 84 0F BC A1 F7 B0 61 62 B5 18 7A 32 4F"

[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
82c19fdc6bb7c16167a0dc72a27e573b	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\d6zkSXv2h4AYN7BR.exe

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 1566 bytes in size. The following strings are added to the hosts file listed below:

127.0.0.1	virustotal.com
127.0.0.1	razorscanner.com
127.0.0.1	scan.majyx.net
127.0.0.1	nodistribute.com
127.0.0.1	virusscan.jotti.org
127.0.0.1	anubis.iseclab.org
127.0.0.1	novirusthanks.org
127.0.0.1	virscan.org
127.0.0.1	metascan.org
127.0.0.1	metascan-online.com
127.0.0.1	virus-trap.org
127.0.0.1	viruschief.com
127.0.0.1	xcscanner.com
127.0.0.1	malwr.com
127.0.0.1	www.virustotal.com
127.0.0.1	www.xcscanner.com
127.0.0.1	www.razorscanner.com
127.0.0.1	www.scan.majyx.net
127.0.0.1	www.nodistribute.com
127.0.0.1	www.virusscan.jotti.org
127.0.0.1	www.viruschief.com
127.0.0.1	www.metascan-online.com
127.0.0.1	www.virus-trap.org
127.0.0.1	www.metascan.org
127.0.0.1	www.virscan.org
127.0.0.1	www.anubis.iseclab.org
127.0.0.1	www.novirusthanks.org
127.0.0.1	www.malwr.com

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):
d6zkSXv2h4AYN7BR.exe:1048
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\d6zkSXv2h4AYN7BR.exe (3737 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wDeyrXy4QzQG4ele (8 bytes)
%Documents and Settings%\%current user%\Application Data\Reader\jdwI0UhRtqkN.exe (8657 bytes)
%System%\drivers\etc\hosts (832 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsu2.tmp (5312 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsp3.tmp\modern-header.bmp (9 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsp3.tmp\modern-wizard.bmp (5520 bytes)
Remove the references to the Trojan by modifying the following registry value(s) (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "%Documents and Settings%\%current user%\Application Data\Reader\jdwI0UhRtqkN.exe,explorer.exe"
Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
Reboot the computer.

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

Static Analysis

VersionInfo

Company Name: Lingoes Project
Product Name: Lingoes Translator
Product Version: 2.9.2
Legal Copyright: Copyright(c) 2006-2014 Lingoes Project
Legal Trademarks:
Original Filename:
Internal Name:
File Version: Lingoes 2.9.2
File Description: Lingoes Dictionary and Text Translation Tool
Comments: This installation was built with Inno Setup.
Language: Language Neutral

Company Name: Lingoes ProjectProduct Name: Lingoes Translator Product Version: 2.9.2 Legal Copyright: Copyright(c) 2006-2014 Lingoes Project Legal Trademarks: Original Filename: Internal Name: File Version: Lingoes 2.9.2 File Description: Lingoes Dictionary and Text Translation ToolComments: This installation was built with Inno Setup.Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	1406548	1406976	5.51593	975e16902df54728f854db08c416f750
.sdata	1417216	488	512	4.61007	18ca3d01a266d20f59b96bfd48fa8dfe
.rsrc	1425408	19352	19456	5.39607	873ca193c192b9a24068abaef197c7ae
.reloc	1449984	12	512	0.070639	025af6c8339298a013cdf33bed3e4088

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

d6zkSXv2h4AYN7BR.exe_1048:

.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

*?|/":

ME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsp3.tmp\modern-wizard.bmp

:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsp3.tmp

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsp3.tmp

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsp3.tmp\modern-wizard.bmp

AutoRun.exe

AutoRun.Properties

System.Configuration

System.Windows.Forms

System.Resources

System.Globalization

.ctor

System.ComponentModel

Microsoft.Win32

RegistryKey

m_regKeyrunAtStartUp

System.Reflection

System.Runtime.InteropServices

System.Diagnostics

System.Runtime.CompilerServices

System.CodeDom.Compiler

.cctor

System.Drawing

OpenSubKey

System.Security.Principal

WindowsIdentity

WindowsPrincipal

WindowsBuiltInRole

System.Threading

AutoRun.FormDev.resources

AutoRun.Properties.Resources.resources

3System.Resources.Tools.StronglyTypedResourceBuilder

2.0.0.0

KMicrosoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator

8.0.0.0

5.0.0.0

$9158fd3e-cb41-44d0-8774-52fdc42a3219

LangOver.com

C:\MAIN_ODED\_DEVELOP\_NET\LangOver\AutoRun\obj\Debug\AutoRun.pdb

_CorExeMain

mscoree.dll

`.rsrc

@.reloc

qUfL bH%fL'cI&hN(kN)kN)kM)kM)kN)kN)kM)kM)kN)kN)kM)x^=

nsp3.tmp

"%Documents and Settings%\%current user%\Local Settings\Temp\d6zkSXv2h4AYN7BR.exe"

%Program Files%\LangOver

%Documents and Settings%\%current user%\Local Settings\Temp

d6zkSXv2h4AYN7BR.exe

CUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsu1.tmp

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

%Documents and Settings%\%current user%\Local Settings\Temp\d6zkSXv2h4AYN7BR.exe

1342833587

1245500

1048774

1245448

1114330

1245396

1048842

Nullsoft Install System v2.46

AutoRun.Properties.Resources

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

\LangOver.exe

LangOver is not configure to run at startup, to change it run the LangOver.exe

LangOver is Already run at startup, to change it run LangOver.exe and use its menu

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps