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Trojan.DownLoader23.61796

Added to the Dr.Web virus database: 2017-02-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Filtering Alerts Extender Themes' = '<SYSTEM32>\yutibow.exe'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Socket Grouping Task Engine Defender Problem] 'ImagePath' = '<SYSTEM32>\yutibow.exe'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Socket Grouping Task Engine Defender Problem] 'Start' = '00000002'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
  • Windows Security Center
Executes the following:
  • '<SYSTEM32>\gpcvndbkd.exe' "<SYSTEM32>\yutibow.exe"
  • '%WINDIR%\Temp\jr4zgqhz2selgc.exe' -r 49059 tcp
  • '%TEMP%\jr4zgqhz2jlbgcfjodmrte.exe'
  • '<SYSTEM32>\yutibow.exe'
Modifies file system:
Creates the following files:
  • <SYSTEM32>\vywjsjefx\run
  • <SYSTEM32>\vywjsjefx\rng
  • %WINDIR%\Temp\jr4zgqhz2selgc.exe
  • <SYSTEM32>\vywjsjefx\cfg
  • <SYSTEM32>\gpcvndbkd.exe
  • %TEMP%\jr4zgqhz2jlbgcfjodmrte.exe
  • <SYSTEM32>\vywjsjefx\tst
  • <SYSTEM32>\yutibow.exe
  • <SYSTEM32>\vywjsjefx\etc
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\gpcvndbkd.exe
  • <SYSTEM32>\yutibow.exe
Deletes the following files:
  • %WINDIR%\Temp\jr4zgqhz2selgc.exe
  • <DRIVERS>\etc\hosts
  • %TEMP%\jr4zgqhz2jlbgcfjodmrte.exe
Substitutes the HOSTS file.
Network activity:
Connects to:
  • 'al###past.net':80
  • 'de####erpast.net':80
  • 'al###lady.net':80
  • 'fr###yfish.net':80
  • 'al###wing.net':80
  • 'de####erwing.net':80
  • 'fi###cloth.net':80
  • 'qu###cloth.net':80
  • 'fi###paid.net':80
  • 'de####erlady.net':80
  • 'al###fish.net':80
  • 'de####erfish.net':80
  • 'sh###fish.net':80
  • 'de###ish.net':80
  • 'pu###ing.net':80
  • 'de###ast.net':80
  • 'sh###lady.net':80
  • 'de###ady.net':80
  • 'pu###ady.net':80
  • 'fr###ylady.net':80
  • 'pu###ish.net':80
  • 'fr###ywing.net':80
  • 'pu###ast.net':80
  • 'fr###ypast.net':80
  • 'le###paid.net':80
  • 'fa###aid.net':80
  • 'le###august.net':80
  • 'ga###orn.net':80
  • 'le###cloth.net':80
  • 'fa###loth.net':80
  • 'mo###cloth.net':80
  • 'wa###loth.net':80
  • 'mo###paid.net':80
  • 'fa###ugust.net':80
  • 'le###born.net':80
  • 'fa###orn.net':80
  • 'fi###born.net':80
  • 'qu###born.net':80
  • 'bo###loth.net':80
  • 'qu###paid.net':80
  • 'fi###august.net':80
  • 'qu###august.net':80
  • 'bo###ugust.net':80
  • 'ga###ugust.net':80
  • 'bo###orn.net':80
  • 'ga###loth.net':80
  • 'bo###aid.net':80
  • 'ga###aid.net':80
  • 'wh###past.net':80
  • 'sa###ast.net':80
  • 'wh###lady.net':80
  • 'so###ish.net':80
  • 'wh###wing.net':80
  • 'sa###ing.net':80
  • 'st###wing.net':80
  • 'ba###ing.net':80
  • 'st###past.net':80
  • 'sa###ady.net':80
  • 'wh###fish.net':80
  • 'sa###ish.net':80
  • 'mi###hown.net':80
  • 'ab###ell.net':80
  • 'mo###olor.net':80
  • 'cr#####onaraminta.net':80
  • 'le###form.net':80
  • 'mo###ugust.net':80
  • 'ri###nstorm.net':80
  • 'be##lxc.com':80
  • 'lo###ish.net':80
  • 'pr####tbottom.net':80
  • 'ca####nbring.net':80
  • 'al###being.net':80
  • 'mo###past.net':80
  • 'ti###ast.net':80
  • 'mo###lady.net':80
  • 'li###ish.net':80
  • 'mo###wing.net':80
  • 'ti###ing.net':80
  • 'sh###wing.net':80
  • 'de###ing.net':80
  • 'sh###past.net':80
  • 'ti###ady.net':80
  • 'mo###fish.net':80
  • 'ti###ish.net':80
  • 'st###fish.net':80
  • 'ba###ish.net':80
  • 'en###wing.net':80
  • 'ba###ast.net':80
  • 'st###lady.net':80
  • 'ba###ady.net':80
  • 'en###lady.net':80
  • 'li###ady.net':80
  • 'en###fish.net':80
  • 'li###ing.net':80
  • 'en###past.net':80
  • 'li###ast.net':80
TCP:
HTTP GET requests:
  • http://al###past.net/index.php
  • http://de####erpast.net/index.php
  • http://al###lady.net/index.php
  • http://fr###yfish.net/index.php
  • http://al###wing.net/index.php
  • http://de####erwing.net/index.php
  • http://fi###cloth.net/index.php
  • http://qu###cloth.net/index.php
  • http://fi###paid.net/index.php
  • http://de####erlady.net/index.php
  • http://al###fish.net/index.php
  • http://de####erfish.net/index.php
  • http://sh###fish.net/index.php
  • http://de###ish.net/index.php
  • http://pu###ing.net/index.php
  • http://de###ast.net/index.php
  • http://sh###lady.net/index.php
  • http://de###ady.net/index.php
  • http://pu###ady.net/index.php
  • http://fr###ylady.net/index.php
  • http://pu###ish.net/index.php
  • http://fr###ywing.net/index.php
  • http://pu###ast.net/index.php
  • http://fr###ypast.net/index.php
  • http://le###paid.net/index.php
  • http://fa###aid.net/index.php
  • http://le###august.net/index.php
  • http://ga###orn.net/index.php
  • http://le###cloth.net/index.php
  • http://fa###loth.net/index.php
  • http://mo###cloth.net/index.php
  • http://wa###loth.net/index.php
  • http://mo###paid.net/index.php
  • http://fa###ugust.net/index.php
  • http://le###born.net/index.php
  • http://fa###orn.net/index.php
  • http://fi###born.net/index.php
  • http://qu###born.net/index.php
  • http://bo###loth.net/index.php
  • http://qu###paid.net/index.php
  • http://fi###august.net/index.php
  • http://qu###august.net/index.php
  • http://bo###ugust.net/index.php
  • http://ga###ugust.net/index.php
  • http://bo###orn.net/index.php
  • http://ga###loth.net/index.php
  • http://bo###aid.net/index.php
  • http://ga###aid.net/index.php
  • http://wh###past.net/index.php
  • http://sa###ast.net/index.php
  • http://wh###lady.net/index.php
  • http://so###ish.net/index.php
  • http://wh###wing.net/index.php
  • http://sa###ing.net/index.php
  • http://st###wing.net/index.php
  • http://ba###ing.net/index.php
  • http://st###past.net/index.php
  • http://sa###ady.net/index.php
  • http://wh###fish.net/index.php
  • http://sa###ish.net/index.php
  • http://mi###hown.net/index.php
  • http://ab###ell.net/index.php
  • http://mo###olor.net/index.php
  • http://cr#####onaraminta.net/index.php
  • http://le###form.net/index.php
  • http://mo###ugust.net/index.php
  • http://ri###nstorm.net/index.php
  • http://be##lxc.com/index.php
  • http://lo###ish.net/index.php
  • http://pr####tbottom.net/index.php
  • http://ca####nbring.net/index.php
  • http://al###being.net/index.php
  • http://mo###past.net/index.php
  • http://ti###ast.net/index.php
  • http://mo###lady.net/index.php
  • http://li###ish.net/index.php
  • http://mo###wing.net/index.php
  • http://ti###ing.net/index.php
  • http://sh###wing.net/index.php
  • http://de###ing.net/index.php
  • http://sh###past.net/index.php
  • http://ti###ady.net/index.php
  • http://mo###fish.net/index.php
  • http://ti###ish.net/index.php
  • http://st###fish.net/index.php
  • http://ba###ish.net/index.php
  • http://en###wing.net/index.php
  • http://ba###ast.net/index.php
  • http://st###lady.net/index.php
  • http://ba###ady.net/index.php
  • http://en###lady.net/index.php
  • http://li###ady.net/index.php
  • http://en###fish.net/index.php
  • http://li###ing.net/index.php
  • http://en###past.net/index.php
  • http://li###ast.net/index.php
UDP:
  • DNS ASK al###past.net
  • DNS ASK de####erpast.net
  • DNS ASK al###lady.net
  • DNS ASK fr###yfish.net
  • DNS ASK al###wing.net
  • DNS ASK de####erwing.net
  • DNS ASK fi###cloth.net
  • DNS ASK qu###cloth.net
  • DNS ASK fi###paid.net
  • DNS ASK de####erlady.net
  • DNS ASK al###fish.net
  • DNS ASK de####erfish.net
  • DNS ASK sh###fish.net
  • DNS ASK de###ish.net
  • DNS ASK pu###ing.net
  • DNS ASK de###ast.net
  • DNS ASK sh###lady.net
  • DNS ASK de###ady.net
  • DNS ASK pu###ady.net
  • DNS ASK fr###ylady.net
  • DNS ASK pu###ish.net
  • DNS ASK fr###ywing.net
  • DNS ASK pu###ast.net
  • DNS ASK fr###ypast.net
  • DNS ASK le###paid.net
  • DNS ASK fa###aid.net
  • DNS ASK le###august.net
  • DNS ASK ga###orn.net
  • DNS ASK le###cloth.net
  • DNS ASK fa###loth.net
  • DNS ASK mo###cloth.net
  • DNS ASK wa###loth.net
  • DNS ASK mo###paid.net
  • DNS ASK fa###ugust.net
  • DNS ASK le###born.net
  • DNS ASK fa###orn.net
  • DNS ASK fi###born.net
  • DNS ASK qu###born.net
  • DNS ASK bo###loth.net
  • DNS ASK qu###paid.net
  • DNS ASK fi###august.net
  • DNS ASK qu###august.net
  • DNS ASK bo###ugust.net
  • DNS ASK ga###ugust.net
  • DNS ASK bo###orn.net
  • DNS ASK ga###loth.net
  • DNS ASK bo###aid.net
  • DNS ASK ga###aid.net
  • DNS ASK sh###past.net
  • DNS ASK wh###past.net
  • DNS ASK sa###ast.net
  • DNS ASK sa###ing.net
  • DNS ASK so###ish.net
  • DNS ASK wh###wing.net
  • DNS ASK wh###lady.net
  • DNS ASK st###wing.net
  • DNS ASK ba###ing.net
  • DNS ASK sa###ish.net
  • DNS ASK sa###ady.net
  • DNS ASK wh###fish.net
  • DNS ASK lo###ish.net
  • DNS ASK mi###hown.net
  • DNS ASK ab###ell.net
  • DNS ASK mo###ugust.net
  • DNS ASK cr#####onaraminta.net
  • DNS ASK le###form.net
  • DNS ASK mo###olor.net
  • DNS ASK ri###nstorm.net
  • DNS ASK be##lxc.com
  • DNS ASK al###being.net
  • DNS ASK pr####tbottom.net
  • DNS ASK ca####nbring.net
  • DNS ASK st###past.net
  • DNS ASK mo###past.net
  • DNS ASK ti###ast.net
  • DNS ASK ti###ing.net
  • DNS ASK li###ish.net
  • DNS ASK mo###wing.net
  • DNS ASK mo###lady.net
  • DNS ASK sh###wing.net
  • DNS ASK de###ing.net
  • DNS ASK ti###ish.net
  • DNS ASK ti###ady.net
  • DNS ASK mo###fish.net
  • DNS ASK en###fish.net
  • DNS ASK st###fish.net
  • DNS ASK ba###ish.net
  • DNS ASK ba###ady.net
  • DNS ASK ba###ast.net
  • DNS ASK st###lady.net
  • DNS ASK en###wing.net
  • DNS ASK en###lady.net
  • DNS ASK li###ady.net
  • DNS ASK li###ast.net
  • DNS ASK li###ing.net
  • DNS ASK en###past.net
  • '23#.#55.255.250':1900

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