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BackDoor.Caphaw.188

Added to the Dr.Web virus database: 2016-12-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'FlaNtfh8h3stzF3qOQ==' = '"%APPDATA%\Microsoft\cmstp.exe"'
Malicious functions:
Injects code into
the following system processes:
  • <SYSTEM32>\ctfmon.exe
  • %WINDIR%\Explorer.EXE
a large number of user processes.
Terminates or attempts to terminate
the following user processes:
  • safari.exe
  • opera.exe
  • chrome.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2500' = '00000003'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000003'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000003'
Modifies file system:
Creates the following files:
  • %APPDATA%\Microsoft\cmstp.exe
Deletes itself.
Network activity:
Connects to:
  • 'og####43i9.ubd.cc':443
  • 'g1###v.vbp.cc':443
  • 'n0###obo.vbp.cc':443
  • '80####4rfme3.ubd.cc':443
  • 'ov####01xct.vbp.cc':443
  • '5w###ri7.vbp.cc':443
  • '4x####6gu0.gmz.cc':443
  • 'la#####fd8h6pd.gmz.cc':443
  • 'tf#####xxdl6s.ubd.cc':443
  • 'yx#####65k0o5a2.gmz.cc':443
  • 'b3####1m24xl.vbp.cc':443
  • '29###h0.gmz.cc':443
  • '6h#####zd6spty.gmz.cc':443
  • '42######h7mmw1qcdq.ubd.cc':443
  • '9i#####6ojxut.ubd.cc':443
  • 'h3####sn6un.ubd.cc':443
  • 'pr####ys064u.gmz.cc':443
  • 'rm####tm4po.vbp.cc':443
  • 'lm####hunp51.gmz.cc':443
  • '4c###59d.ubd.cc':443
  • 'lb######4065t0rici.vbp.cc':443
  • 'ze####sfl.vbp.cc':443
  • 'l8#####rc8qk3l.ubd.cc':443
  • '8r#####ezthus.ubd.cc':443
  • 'h5###7et.vbp.cc':443
  • 'fc#####86zqvfuum.ubd.cc':443
  • 'iu####g6zp.vbp.cc':443
  • '0w####g1w.vbp.cc':443
  • 'gw####5s7wxl.gmz.cc':443
  • '3f###4b8.ubd.cc':443
  • '1z#####0llfc6x1o.ubd.cc':443
  • 'py###if2.vbp.cc':443
  • 'la######ko56qyv8v.vbp.cc':443
  • '0f#####4h7h97.gmz.cc':443
  • '33#####og8mbn9o.gmz.cc':443
  • 'nl#####t1kdvi.gmz.cc':443
  • 'yf####d39qf2.ubd.cc':443
  • 'mz#####8fk04er.gmz.cc':443
  • '7p#####s51isu.gmz.cc':443
UDP:
  • DNS ASK og####43i9.ubd.cc
  • DNS ASK g1###v.vbp.cc
  • DNS ASK n0###obo.vbp.cc
  • DNS ASK 80####4rfme3.ubd.cc
  • DNS ASK ov####01xct.vbp.cc
  • DNS ASK 5w###ri7.vbp.cc
  • DNS ASK 4x####6gu0.gmz.cc
  • DNS ASK la#####fd8h6pd.gmz.cc
  • DNS ASK tf#####xxdl6s.ubd.cc
  • DNS ASK yx#####65k0o5a2.gmz.cc
  • DNS ASK b3####1m24xl.vbp.cc
  • DNS ASK 29###h0.gmz.cc
  • DNS ASK 6h#####zd6spty.gmz.cc
  • DNS ASK 42######h7mmw1qcdq.ubd.cc
  • DNS ASK 9i#####6ojxut.ubd.cc
  • DNS ASK h3####sn6un.ubd.cc
  • DNS ASK pr####ys064u.gmz.cc
  • DNS ASK rm####tm4po.vbp.cc
  • DNS ASK lm####hunp51.gmz.cc
  • DNS ASK 4c###59d.ubd.cc
  • DNS ASK lb######4065t0rici.vbp.cc
  • DNS ASK ze####sfl.vbp.cc
  • DNS ASK l8#####rc8qk3l.ubd.cc
  • DNS ASK 8r#####ezthus.ubd.cc
  • DNS ASK h5###7et.vbp.cc
  • DNS ASK fc#####86zqvfuum.ubd.cc
  • DNS ASK iu####g6zp.vbp.cc
  • DNS ASK 0w####g1w.vbp.cc
  • DNS ASK gw####5s7wxl.gmz.cc
  • DNS ASK 3f###4b8.ubd.cc
  • DNS ASK 1z#####0llfc6x1o.ubd.cc
  • DNS ASK py###if2.vbp.cc
  • DNS ASK la######ko56qyv8v.vbp.cc
  • DNS ASK 0f#####4h7h97.gmz.cc
  • DNS ASK 33#####og8mbn9o.gmz.cc
  • DNS ASK nl#####t1kdvi.gmz.cc
  • DNS ASK yf####d39qf2.ubd.cc
  • DNS ASK mz#####8fk04er.gmz.cc
  • DNS ASK 7p#####s51isu.gmz.cc

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

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  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.

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