Bibliothèque
Ma bibliothèque

+ Ajouter à la bibliothèque

Contacter-nous !
Support 24/24 | Rules regarding submitting

Nous téléphoner

0 825 300 230

Forum

Vos requêtes

  • Toutes : -
  • Non clôturées : -
  • Dernière : le -

Nous téléphoner

0 825 300 230

Profil

BackDoor.Butirat.28

Added to the Dr.Web virus database: 2011-10-19

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'fdhat' = '%HOMEPATH%\fdhat.exe /s'
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'CB5.exe' = '%ProgramFiles(x86)%\Internet Explorer\83DC\CB5.exe'
  • [<HKLM>\SYSTEM\CurrentControlSet\Control\Session Manager\SubSystems] 'Windows' = '<SYSTEM32>\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows Ser...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000010] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000009] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000008] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000007] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000006] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000005] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000004] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000003] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000002] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\Protocol_Catalog9\Catalog_Entries\000000000001] 'PackedCatalogItem' = '{6d,73,77,73,6f,63,6b,2e,64,6c,6c,00,00,00,00,00,00,00,00,00...
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\NameSpace_Catalog5\Catalog_Entries\000000000005] 'LibraryPath' = 'mswsock.dll'
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\WinSock2\Parameters\NameSpace_Catalog5\Catalog_Entries\000000000001] 'LibraryPath' = 'mswsock.dll'
Creates the following files on removable media
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\rcx4c76.tmp
  • <Drive name for removable media>:\asm.exe
  • <Drive name for removable media>:\rcx4850.tmp
  • <Drive name for removable media>:\calibre.exe
  • <Drive name for removable media>:\rcx442a.tmp
  • <Drive name for removable media>:\rcx43fb.tmp
  • <Drive name for removable media>:\rcx43bb.tmp
  • <Drive name for removable media>:\lom602.exe
  • <Drive name for removable media>:\rcx3f86.tmp
  • <Drive name for removable media>:\rcx509c.tmp
  • <Drive name for removable media>:\background.exe
  • <Drive name for removable media>:\2015-02-patients-topic-work-related-asthma-jobs.exe
  • <Drive name for removable media>:\rcx3ab2.tmp
  • <Drive name for removable media>:\rcx3a92.tmp
  • <Drive name for removable media>:\rcx3a53.tmp
  • <Drive name for removable media>:\spib_pima.exe
  • <Drive name for removable media>:\rcx35fe.tmp
  • <Drive name for removable media>:\rcx3487.tmp
  • <Drive name for removable media>:\clip_1080_5sec_10mbps_h264.exe
  • <Drive name for removable media>:\rcx2edb.tmp
  • <Drive name for removable media>:\rcx3f56.tmp
  • <Drive name for removable media>:\rcxf65b.tmp
  • <Drive name for removable media>:\dissolveanother.exe
  • <Drive name for removable media>:\rcx7a49.tmp
  • <Drive name for removable media>:\excel_example.exe
  • <Drive name for removable media>:\rcx7613.tmp
  • <Drive name for removable media>:\rcx75f3.tmp
  • <Drive name for removable media>:\rcx75c3.tmp
  • <Drive name for removable media>:\1sm_price.exe
  • <Drive name for removable media>:\rcx718e.tmp
  • <Drive name for removable media>:\rcx715e.tmp
  • <Drive name for removable media>:\passport_pal.exe
  • <Drive name for removable media>:\rcx6d29.tmp
  • <Drive name for removable media>:\rcx6ce9.tmp
  • <Drive name for removable media>:\testwmv.exe
  • <Drive name for removable media>:\rcx68a4.tmp
  • <Drive name for removable media>:\rcx6875.tmp
  • <Drive name for removable media>:\babyboymaintoscenesbackground_pal.exe
  • <Drive name for removable media>:\rcx643f.tmp
  • <Drive name for removable media>:\arrow-down.exe
  • <Drive name for removable media>:\rcx600a.tmp
  • <Drive name for removable media>:\breakpoint.exe
  • <Drive name for removable media>:\rcx5bb5.tmp
  • <Drive name for removable media>:\cleanlyrics.exe
  • <Drive name for removable media>:\rcx2da2.tmp
  • <Drive name for removable media>:\rcx3ed8.tmp
  • <Drive name for removable media>:\51.exe
  • <Drive name for removable media>:\rcx292e.tmp
  • <Drive name for removable media>:\pushkin.exe
  • <Drive name for removable media>:\dashborder_120.exe
  • <Drive name for removable media>:\rcxea19.tmp
  • <Drive name for removable media>:\applicantform_en.exe
  • <Drive name for removable media>:\rcxe4ea.tmp
  • <Drive name for removable media>:\dashborder_144.exe
  • <Drive name for removable media>:\rcxd8e8.tmp
  • <Drive name for removable media>:\dial.exe
  • <Drive name for removable media>:\rcxcd33.tmp
  • <Drive name for removable media>:\tileimage.exe
  • <Drive name for removable media>:\rcxc7e5.tmp
  • <Drive name for removable media>:\rcxb9e0.tmp
  • <Drive name for removable media>:\rcxea69.tmp
  • <Drive name for removable media>:\dashborder_96.exe
  • <Drive name for removable media>:\rcxa150.tmp
  • <Drive name for removable media>:\dashborder_192.exe
  • <Drive name for removable media>:\rcx90ac.tmp
  • <Drive name for removable media>:\coffee.exe
  • <Drive name for removable media>:\rcx7fe9.tmp
  • <Drive name for removable media>:\rcx531e.tmp
  • <Drive name for removable media>:\delete.exe
  • <Drive name for removable media>:\fdhat.exe
  • <Drive name for removable media>:\rcx7a79.tmp
  • <Drive name for removable media>:\rcx55db.tmp
  • <Drive name for removable media>:\weeklysheet1215.exe
  • <Drive name for removable media>:\rcxf7e3.tmp
  • <Drive name for removable media>:\rcxea49.tmp
  • <Drive name for removable media>:\rcx24da.tmp
  • <Drive name for removable media>:\168.exe
  • <Drive name for removable media>:\rcx2056.tmp
  • <Drive name for removable media>:\1189.exe
  • <Drive name for removable media>:\rcx1be2.tmp
  • <Drive name for removable media>:\4f0bf7ff71f28.exe
  • <Drive name for removable media>:\rcx1730.tmp
  • <Drive name for removable media>:\parnas_01.exe
  • <Drive name for removable media>:\rcx12dc.tmp
  • <Drive name for removable media>:\rcx129c.tmp
  • <Drive name for removable media>:\rcx125d.tmp
  • <Drive name for removable media>:\cveuropeo.exe
  • <Drive name for removable media>:\rcxbe6.tmp
  • <Drive name for removable media>:\rcxbd6.tmp
  • <Drive name for removable media>:\rcxbb5.tmp
  • <Drive name for removable media>:\fi51.exe
  • <Drive name for removable media>:\rcxfddf.tmp
  • <Drive name for removable media>:\rcxfdaf.tmp
  • <Drive name for removable media>:\rcxfc67.tmp
  • <Drive name for removable media>:\508softwareandos.exe
  • <Drive name for removable media>:\rcxf7a4.tmp
  • <Drive name for removable media>:\rcx7ab8.tmp
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Injects code into
the following system processes:
  • <SYSTEM32>\csrss.exe
the following user processes:
  • iexplore.exe
Searches for windows to
detect programs and games:
  • ClassName: 'SkinuxWindow', WindowName: 'MySpaceIM with Skype'
Modifies settings of Windows Internet Explorer
  • [<HKCU>\Software\Microsoft\windows\CurrentVersion\Internet Settings] 'ProxyEnable' = '00000001'
  • [<HKCU>\Software\Microsoft\windows\CurrentVersion\Internet Settings] 'ProxyServer' = 'http=127.0.0.1:64364'
Modifies file system
Creates the following files
  • %HOMEPATH%\ya6nppl9.exe
  • %HOMEPATH%\fdhat.exe
  • %HOMEPATH%\achost.exe
  • %HOMEPATH%\bchost.exe
  • %ProgramFiles(x86)%\internet explorer\83dc\cb5.exe
  • %APPDATA%\ccd95\50e4.cd9
  • %HOMEPATH%\cchost.exe
  • %HOMEPATH%\dchost.exe
  • %WINDIR%\assembly\temp\@
  • %WINDIR%\assembly\temp\cfg.ini
  • <SYSTEM32>\consrv.dll
  • %WINDIR%\assembly\gac_64\desktop.ini
  • %WINDIR%\assembly\gac_32\desktop.ini
Sets the 'hidden' attribute to the following files
  • %HOMEPATH%\fdhat.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files
  • %HOMEPATH%\cchost.exe
Modifies the following files
  • %APPDATA%\mozilla\firefox\profiles\gn7ryp3k.default\prefs.js
Network activity
Connects to
  • 'en#####ringcrossing.com':80
  • 'localhost':80
TCP
HTTP GET requests
  • http://en#####ringcrossing.com/images/misc/64646.png?pr##########################################################################################################################################...
UDP
  • DNS ASK pd#####storeonline.com
  • DNS ASK en#####ringcrossing.com
  • DNS ASK lo####reonline.com
  • DNS ASK si####xstored.com
Miscellaneous
Creates and executes the following
  • '%HOMEPATH%\ya6nppl9.exe'
  • '%HOMEPATH%\fdhat.exe'
  • '%HOMEPATH%\achost.exe'
  • '%HOMEPATH%\bchost.exe'
  • '%HOMEPATH%\bchost.exe' start%APPDATA%\CCD95\89283.exe%%APPDATA%\CCD95
  • '%HOMEPATH%\bchost.exe' start%ProgramFiles(x86)%\950E4\lvvm.exe%%ProgramFiles(x86)%\950E4
  • '%HOMEPATH%\cchost.exe'
  • '%HOMEPATH%\dchost.exe'
  • '%WINDIR%\syswow64\cmd.exe' /c tasklist&&del yA6npPl9.exe' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c tasklist&&del yA6npPl9.exe
  • '%WINDIR%\syswow64\tasklist.exe'
  • '%WINDIR%\explorer.exe'

Recommandations pour le traitement

  1. Si le système d'exploitation peut être démarré (en mode normal ou en mode sans échec), téléchargez Dr.Web Security Space et lancez un scan complet de votre ordinateur et de tous les supports amovibles que vous utilisez. En savoir plus sur Dr.Web Security Space.
  2. Si le démarrage du système d'exploitation est impossible, veuillez modifier les paramètres du BIOS de votre ordinateur pour démarrer votre ordinateur via CD/DVD ou clé USB. Téléchargez l'image du disque de secours de restauration du système Dr.Web® LiveDisk ou l'utilitaire pour enregistrer Dr.Web® LiveDisk sur une clé USB, puis préparez la clé USB appropriée. Démarrez l'ordinateur à l'aide de cette clé et lancez le scan complet et le traitement des menaces détectées.

Veuillez lancer le scan complet du système à l'aide de Dr.Web Antivirus pour Mac OS.

Veuillez lancer le scan complet de toutes les partitions du disque à l'aide de Dr.Web Antivirus pour Linux.

  1. Si votre appareil mobile fonctionne correctement, veuillez télécharger et installer sur votre appareil mobile Dr.Web pour Android. Lancez un scan complet et suivez les recommandations sur la neutralisation des menaces détectées.
  2. Si l'appareil mobile est bloqué par le Trojan de la famille Android.Locker (un message sur la violation grave de la loi ou la demande d'une rançon est affiché sur l'écran de l'appareil mobile), procédez comme suit:
    • démarrez votre Smartphone ou votre tablette en mode sans échec (si vous ne savez pas comment faire, consultez la documentation de l'appareil mobile ou contactez le fabricant) ;
    • puis téléchargez et installez sur votre appareil mobile Dr.Web pour Android et lancez un scan complet puis suivez les recommandations sur la neutralisation des menaces détectées ;
    • Débranchez votre appareil et rebranchez-le.

En savoir plus sur Dr.Web pour Android