FOR CUSTOMERS

Library
My library

+ Add to library

Contact us
24/7 Tech support | Rules regarding submitting

Send a message

Your tickets

Profile

Trojan.KeyLogger.19807

Added to the Dr.Web virus database: 2013-06-07

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'csrss' = '%ALLUSERSPROFILE%\Application Data\csrss.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'services' = '%ALLUSERSPROFILE%\Application Data\services.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '%ALLUSERSPROFILE%\Application Data\lsass.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = '%WINDIR%\Explorer.exe %WINDIR%\cache\apps\Microsoft\Applications\Ms-office\Ms-Word\Networking\internet\system32\TangoCharle.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe <SYSTEM32>\1036\winlogon.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\TlntSvr] 'Start' = '00000002'
Creates the following files on removable media:
  • <Drive name for removable media>:\MobileSoftwares.exe
  • <Drive name for removable media>:\SamsungCurvyTools.exe
  • <Drive name for removable media>:\forOffice.exe
  • <Drive name for removable media>:\NewAvira.exe
  • <Drive name for removable media>:\Downloads.exe
  • <Drive name for removable media>:\Nimbuzz.exe
  • <Drive name for removable media>:\Nod32.exe
  • <Drive name for removable media>:\office2011.exe
  • <Drive name for removable media>:\PornFilms.exe
  • <Drive name for removable media>:\Sharedfiles.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\picnic\picnic.cobra
  • <Drive name for removable media>:\Games\Games.exe
  • <Drive name for removable media>:\Games\Games.cobra
  • <Drive name for removable media>:\picnic\picnic.exe
  • <Drive name for removable media>:\VIDEO_TS.exe
  • <Drive name for removable media>:\Cobra Riderz.exe
  • <Drive name for removable media>:\Songs.exe
  • <Drive name for removable media>:\<Virus name>.exe
  • <Drive name for removable media>:\Games\flashGames.exe
  • <Drive name for removable media>:\picnic\photos.exe
  • <Drive name for removable media>:\picnic\videos.exe
  • <Drive name for removable media>:\Games\MiniclipGames.exe
  • <Drive name for removable media>:\mig33.exe
  • <Drive name for removable media>:\Blankcard.exe
  • <Drive name for removable media>:\Fifa2011.exe
  • <Drive name for removable media>:\UltimateRacing.exe
  • <Drive name for removable media>:\TangoCharle.exe
  • <Drive name for removable media>:\facebook.exe
  • <Drive name for removable media>:\DjRemixes.exe
  • <Drive name for removable media>:\DonotLook.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\tlntsvr.exe' = '<SYSTEM32>\tlntsvr.exe:*:Enabled:iexplorer'
Creates and executes the following:
  • '<SYSTEM32>\lssas.exe'
Executes the following:
  • '<SYSTEM32>\regsvr32.exe' /s <SYSTEM32>\tlntsvrp.dll
  • '<SYSTEM32>\tlntsvr.exe'
  • '<SYSTEM32>\netsh.exe' firewall set allowedprogram <SYSTEM32>\nc.exe iexplorer enable
  • '<SYSTEM32>\netsh.exe' firewall set allowedprogram <SYSTEM32>\iexplorer.exe iexplorer enable
  • '<SYSTEM32>\netsh.exe' firewall set allowedprogram <SYSTEM32>\tskmgr.exe iexplorer enable
  • '<SYSTEM32>\sc.exe' start tlntsvr
  • '<SYSTEM32>\net1.exe' localgroup %USERNAME%s Redbull /add
  • '<SYSTEM32>\net1.exe' user Redbull 123456789 /add
  • '<SYSTEM32>\net1.exe' localgroup 'remote desktop users' Redbull /add
  • '<SYSTEM32>\netsh.exe' firewall set allowedprogram <SYSTEM32>\tlntsvr.exe iexplorer enable
  • '<SYSTEM32>\sc.exe' config tlntsvr start= auto
Installs hooks to intercept notifications
on keystrokes:
  • Handler for all processes: <SYSTEM32>\KeyLogger.dll
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Internet Explorer\Main] 'Window Title' = 'Suck what the Fuck!!! (Cobra RiderZ)'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • C:\ProgramFiles.exe
  • <SYSTEM32>\Nt.cobra
  • %WINDIR%.exe
  • C:\Drivers.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\mediafire[1].rar
  • %WINDIR%\netcat.zip
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\nc11nt[1].zip
  • %WINDIR%\netcat.rar
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\nc11nt[1].zip
  • %ALLUSERSPROFILE%\Application Data\services.exe
  • %TEMP%\aut2.tmp
  • <SYSTEM32>\lssas.exe
  • %TEMP%\aut1.tmp
  • <SYSTEM32>\keylogger.dll
  • %TEMP%\aut3.tmp
  • %ALLUSERSPROFILE%\Application Data\lsass.exe
  • %ALLUSERSPROFILE%\Application Data\csrss.exe
  • %WINDIR%\cache\apps\Microsoft\Applications\Ms-office\Ms-Word\Networking\internet\system32\TangoCharle.exe
  • <SYSTEM32>\1036\winlogon.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\PornFilms.exe
  • <Drive name for removable media>:\<Virus name>.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • <Drive name for removable media>:\Games\Games.cobra
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\nc11nt[1].zip
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\nc11nt[1].zip
  • <Drive name for removable media>:\Games\Games.exe
  • %TEMP%\aut1.tmp
  • %TEMP%\aut2.tmp
  • %TEMP%\aut3.tmp
Network activity:
Connects to:
  • 'www.do####adnetcat.com':80
  • 'www.me###fire.com':80
TCP:
HTTP GET requests:
  • www.do####adnetcat.com/nc11nt.zip
  • www.me###fire.com/?br####################
UDP:
  • DNS ASK www.do####adnetcat.com
  • DNS ASK www.me###fire.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android

Dr.Web © Doctor Web
2003 — 2022

Doctor Web is a Russian cybersecurity company focused on threat detection, prevention and response technologies.