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Trojan.DownLoader8.62476

Added to the Dr.Web virus database: 2013-05-05

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MciGkrwk' = '<LS_APPDATA>\eyqtaont\mcigkrwk.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,<LS_APPDATA>\eyqtaont\mcigkrwk.exe'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\mcigkrwk.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks the following features:
  • User Account Control (UAC)
  • Windows Security Center
Creates and executes the following:
  • '%TEMP%\ekdbmtyq.exe' admin
  • '%TEMP%\ekdbmtyq.exe' elevate
Executes the following:
  • '<SYSTEM32>\svchost.exe'
Hooks the following functions in System Service Descriptor Table (SSDT):
  • NtOpenKey, handler: tqgnnosw.sys
  • NtCreateKey, handler: tqgnnosw.sys
Modifies file system :
Creates the following files:
  • %TEMP%\tqgnnosw.sys
  • %WINDIR%\Temp\6decd52f
  • %WINDIR%\Temp\7fffffb1
  • <LS_APPDATA>\eyqtaont\mcigkrwk.exe
  • %TEMP%\ekdbmtyq.exe
  • %ALLUSERSPROFILE%\Application Data\bjdwbfvf.log
  • <LS_APPDATA>\niuydqre.log
Sets the 'hidden' attribute to the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\mcigkrwk.exe
Deletes the following files:
  • %TEMP%\tqgnnosw.sys
Network activity:
Connects to:
  • 'ne####fbmkbvmf.com':443
  • 're####ihcxhjj.com':443
  • 'ex###wmpaed.com':443
  • 'cn####hkocdbps.com':443
  • 'jp#####afxjqvaga.com':443
  • 'yx####qdqbinut.com':443
  • 'dq#####slaemuixxak.com':443
  • 'su###qbos.com':443
  • '74.##5.232.51':80
  • 'de###awup.com':443
  • 'xx####yvyfvirbp.com':443
UDP:
  • DNS ASK xo####nddplwap.com
  • DNS ASK dl###vcpabt.com
  • DNS ASK bt#####qjporbsjd.com
  • DNS ASK qv#####tcmpfivpbhma.com
  • DNS ASK eb####absnpja.com
  • DNS ASK mk#####xcbljwswkibo.com
  • DNS ASK am#####mowgdkmvwky.com
  • DNS ASK xp#####twgpeupcfy.com
  • DNS ASK fe###fqjneg.com
  • DNS ASK kt#####hgwrnvqet.com
  • DNS ASK yy###kwrlh.com
  • DNS ASK br####jvvyst.com
  • DNS ASK dg#####qadhsqndf.com
  • DNS ASK yo####ubbqsr.com
  • DNS ASK dt###yyl.com
  • DNS ASK wg###ojfpyq.com
  • DNS ASK vc###ijuc.com
  • DNS ASK ya##o.com
  • DNS ASK vg#####tefriixwohwm.com
  • DNS ASK hf###hngo.com
  • DNS ASK ux#####jptiupnhdafy.com
  • DNS ASK ri#####toushpqkybt.com
  • DNS ASK rg####lheqob.com
  • DNS ASK vu###mcu.com
  • DNS ASK bk#####wwqjowkdcd.com
  • DNS ASK cc####sdggihuue.com
  • DNS ASK fn#####hqclyqtdfwl.com
  • DNS ASK xl###wpy.com
  • DNS ASK oh#####iqvmaldifexr.com
  • DNS ASK pw####veiduwg.com
  • DNS ASK vm####vmtfjtboi.com
  • DNS ASK vp###cbo.com
  • DNS ASK nv###jhhbmy.com
  • DNS ASK xy#####kiyljsyimbwy.com
  • DNS ASK ff####ypygps.com
  • DNS ASK ur#####rdeebueorhhr.com
  • DNS ASK yw###kegf.com
  • DNS ASK ho#####hnlrygqdh.com
  • DNS ASK lu###xdp.com
  • DNS ASK mb#####wgoplwxelfyk.com
  • DNS ASK js###ldj.com
  • DNS ASK gn###hihbdo.com
  • DNS ASK kx###qvibh.com
  • DNS ASK mc#####vtjxxfwsqbhv.com
  • DNS ASK ei#####ayptoowavlw.com
  • DNS ASK eq#####ctnqvurlshao.com
  • DNS ASK xs###joubqe.com
  • DNS ASK an####iyumgaobm.com
  • DNS ASK lh#####hcwjfswjn.com
  • DNS ASK gs####ijmyinejj.com
  • DNS ASK pv#####mklrvxqfaeb.com
  • DNS ASK tu#####bvmlpkpump.com
  • DNS ASK dt#####wedfrlcpy.com
  • DNS ASK jg###edh.com
  • DNS ASK il#####jcrunbatw.com
  • DNS ASK vi####hsgpoljh.com
  • DNS ASK ei#####arqaatxjgv.com
  • DNS ASK uf#####oumsitbhyax.com
  • DNS ASK uu####kmifrvjyc.com
  • DNS ASK cp#####smyjacwqpsi.com
  • DNS ASK lx#####xfcapbqtep.com
  • DNS ASK oc###tndgk.com
  • DNS ASK ev#####pujijytoa.com
  • DNS ASK bg#####kkvygigfa.com
  • DNS ASK yl###cgpf.com
  • DNS ASK wt####viftbe.com
  • DNS ASK qi###byqkfa.com
  • DNS ASK rt####lshiml.com
  • DNS ASK bk###pgyhl.com
  • DNS ASK py#####nrcinuankpaa.com
  • DNS ASK kp#####dhnhieswds.com
  • DNS ASK oo####qkkpbpcd.com
  • DNS ASK gb###hgybo.com
  • DNS ASK lx#####lvufyvndmyy.com
  • DNS ASK ge####wunfkxht.com
  • DNS ASK dx#####delyjvdjlrij.com
  • DNS ASK nn#####cfrulntvgq.com
  • DNS ASK bh####aalssy.com
  • DNS ASK hw####qwgtlkvgu.com
  • DNS ASK ho####noafxlrj.com
  • DNS ASK pf###juoph.com
  • DNS ASK ta#####kemwisnkgxuc.com
  • DNS ASK tf####ljqmpeai.com
  • DNS ASK cf####cdbeurv.com
  • DNS ASK ea####wstvpc.com
  • DNS ASK yv####ohnvdb.com
  • DNS ASK yx####qdqbinut.com
  • DNS ASK de###awup.com
  • DNS ASK re####ihcxhjj.com
  • DNS ASK ne####fbmkbvmf.com
  • DNS ASK dq#####slaemuixxak.com
  • DNS ASK su###qbos.com
  • DNS ASK xx####yvyfvirbp.com
  • DNS ASK google.com
  • DNS ASK ex###wmpaed.com
  • DNS ASK hw#####jokhwxuplfr.com
  • DNS ASK ot###ynobjj.com
  • DNS ASK uj#####sbistbokq.com
  • DNS ASK bb####wngdrw.com
  • DNS ASK cn####hkocdbps.com
  • DNS ASK jp#####afxjqvaga.com
  • DNS ASK sy####accqplk.com
  • DNS ASK sy###mrbjvj.com
  • DNS ASK tn#####kojxrqhhjfvi.com
  • DNS ASK fh#####cqnsserdoan.com
  • DNS ASK mk####kmghlh.com
  • DNS ASK ry####dufabqc.com
  • DNS ASK ut###pia.com
  • DNS ASK eq###dqtsyh.com
  • DNS ASK wh####votltifj.com
  • DNS ASK bing.com
  • DNS ASK au####symisdi.com
  • DNS ASK gm###ugko.com
  • DNS ASK vr###vexnj.com
  • DNS ASK fp#####myglqqdly.com
  • DNS ASK qf###fuv.com
  • DNS ASK sd#####aetkjbaadd.com
  • DNS ASK mb####pqvvtty.com
  • DNS ASK yt####ambvydsa.com
  • DNS ASK df####apewrb.com
  • DNS ASK iv###axod.com
  • DNS ASK jh####wikxuuqh.com
  • DNS ASK iw####qhwchjkjd.com
  • DNS ASK dg####uptldoiis.com
  • DNS ASK mb###ftevl.com
  • DNS ASK wn###idtgxt.com
  • DNS ASK kr#####rymwnkddomby.com
  • DNS ASK aa#####tpewjjcxu.com
  • DNS ASK uc####pcjspuoe.com
  • DNS ASK cb####hmpkyuub.com
  • DNS ASK yn#####yjkpgtugtwo.com
  • DNS ASK dj####lvppmrjm.com
  • DNS ASK mm####pdwagcg.com
  • DNS ASK ws###amk.com
  • DNS ASK en####mmosror.com
  • DNS ASK wd#####ualkbapofta.com
  • DNS ASK ig#####oluspcljm.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' 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.
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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