TROJ_FAM_00000a400.TOMA

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

• %System Root%\DOCUME~1
• %System Root%\DOCUME~1\ADMINI~1
• %User Profile%\LOCALS~1
• %User Temp%\nsi3.tmp
• %Program Files%\Live-Player
• %Program Files%\Live-Player\data
• %Program Files%\Live-Player\skins
• %System Root%\Documents and Settings
• %System Root%\Documents and Settings\Administrator
• %User Profile%\Local Settings
• %Application Data%\live-player
• %System Root%\Documents and Settings\All Users
• %Start Menu%\Programs
• %Start Menu%\Programs\Live-Player
• %Windows%\SoftwareDistribution
• %Windows%\SoftwareDistribution\DataStore\Logs\
• %Windows%\SoftwareDistribution\DataStore

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
dctribq = ""%Application Data%\dctribq.exe" dctribq"

Other System Modifications

This Trojan deletes the following files:

• %User Temp%\nss1.tmp
• %User Temp%\nsi3.tmp
• %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)

It deletes the following folders:

• %User Temp%\nsi3.tmp\

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\OOO\
Live-Player

HKEY_LOCAL_MACHINE\Software\OOO\
Live-Player

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player

HKEY_CURRENT_USER\Software\fcn

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
dctribq

HKEY_CURRENT_USER\Software\LanConfig

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\OOO\
Live-Player
grpid = "579"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
grpid = "579"

HKEY_LOCAL_MACHINE\SOFTWARE\OOO\
Live-Player
InstallOpt1 = "1"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
InstallOpt1 = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\OOO\
Live-Player
installdt = "20081121"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
installdt = "20081121"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
uai = "http://www.{BLOCKED}layer.com/congratulation.php?lg=es&grpid=579&installopt1=1&tag_id=378"

HKEY_LOCAL_MACHINE\SOFTWARE\OOO\
Live-Player
dl_lg = "es"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
dl_lg = "es"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
uai = "http://www.{BLOCKED}layer.com/congratulation.php?lg=es&grpid=579&installopt1=1&tag_id=378&res=1"

HKEY_LOCAL_MACHINE\SOFTWARE\OOO\
Live-Player
Language = "en"

HKEY_CURRENT_USER\Software\OOO\
Live-Player
Language = "en"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
DisplayName = "Live-Player"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
UninstallString = "%Program Files%\Live-Player\uninst.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
UninstallString2 = ""%Program Files%\Live-Player\uninst.exe" /S"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
DisplayIcon = "%Program Files%\Live-Player\Live-Player.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
DisplayVersion = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
URLInfoAbout = "http://www.Live-player.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Live-Player
Publisher = "OOO «Favorit»"

HKEY_LOCAL_MACHINE\SOFTWARE\OOO\
Live-Player
Installer Language = "1033"

HKEY_CURRENT_USER\Software\fcn
gid = "579"

HKEY_CURRENT_USER\Software\fcn
cnid = "Z5cAvjgNSiSwxUZzDEM0vg"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
dctribq
DisplayName = "Favorit"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
dctribq
UninstallString = ""%Application Data%\dctribq.exe" -uninstall"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
dctribq
NoModify = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
dctribq
NoRepair = 1

HKEY_CURRENT_USER\Software\fcn
idt = "201111230502"

HKEY_CURRENT_USER\Software\LanConfig
LAN = "UP"

It modifies the following registry entries:

HKEY_CURRENT_USER\SessionInformation
ProgramCount = 2

(Note: The default value data of the said registry entry is 1.)

HKEY_CURRENT_USER\SessionInformation
ProgramCount = 1

(Note: The default value data of the said registry entry is 1.)

Dropping Routine

This Trojan drops the following files:

• %User Temp%\nss2.tmp
• %User Temp%\nsi3.tmp\LangDLL.dll
• %User Temp%\nsi3.tmp\ioSpecial.ini
• %User Temp%\nsi3.tmp\modern-wizard.bmp
• %User Temp%\nsi3.tmp\modern-header.bmp
• %User Temp%\nsi3.tmp\InstallOptions.dll
• %Application Data%\dctribq.exe
• %Program Files%\Live-Player\data\translation_file_live-player.xml
• %Application Data%\live-player\flv.swf
• %Start Menu%\Programs\Live-Player\Live-Player.lnk
• %Start Menu%\Programs\Live-Player\Uninstall.lnk
• %Desktop%\Live-Player.lnk
• %User Temp%\nsi3.tmp\NSISdl.dll
• %User Temp%\db.dat
• %User Temp%\skin_dll.dat
• %User Temp%\sqlite_dll.dat
• %User Temp%\liveplayer_exe.dat
• %User Temp%\liveplayer_skin.dat
• %User Temp%\vcredist_x86.exe
• %User Temp%\nsi3.tmp\ExtractDLL.dll
• %Program Files%\Live-Player\live-player.exe
• %Program Files%\Live-Player\sqlite3.dll
• %Program Files%\Live-Player\SkinCrafterDll.dll
• %Program Files%\Live-Player\skins\live-player.skf
• %Application Data%\live-player\liveplayer.s3db
• %Program Files%\Live-Player\uninst.exe
• %Application Data%\dctribq.dat
• %User Temp%\dctribqpi.tmp
• %Application Data%\dctribq_m2s.xml
• %Application Data%\dctribq_m2s.zl
• %Application Data%\dctribq_s2m.zl
• %Application Data%\dctribq_s2m.xml
• %User Temp%\dctribqup.tmp
• %User Temp%\dctribqpic.tmp
• %Application Data%\dctribq_navps.dat

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://updates.{BLOCKED}-network.comsa/cpi.php?{random characters}
• http://updates.{BLOCKED}-network.comsa/receive_data.php?tcpc=40078
• http://updates.{BLOCKED}-network.combinaries/bin.php?id=0&up=1&fd=1&tcpc=40312
• http://updates.{BLOCKED}-network.combinaries/check.php?tcpc=41937
• http://updates.{BLOCKED}-network.combinaries/check.php?tcpc=55750
• http://updates.{BLOCKED}-network.combinaries/check.php?tcpc=69625

This report is generated via an automated analysis system.