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BackDoor.Butirat.28
Added to the Dr.Web virus database:
2011-10-19
Virus description added:
2022-06-21
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:
Injects code into
the following system processes:
the following user processes:
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
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
Windows
macOS
Linux
Android
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 .
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.
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.
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
Téléchargez Dr.Web pour Android
Gratuit pour 3 mois
Tous les composants de protection
Renouvellement de la démo via AppGallery/Google Pay
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