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Trojan.Hottrend.617

Added to the Dr.Web virus database: 2016-10-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wuaucldt' = '%HOMEPATH%\wuaucldt.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'wuaucldt' = '<SYSTEM32>\wuaucldt.exe'
Malicious functions:
Executes the following:
  • '<SYSTEM32>\cmd.exe' /c del <Full path to file>
  • '<SYSTEM32>\svchost.exe'
  • '<SYSTEM32>\wuaucldt.exe'
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
Modifies file system:
Creates the following files:
  • %HOMEPATH%\wuaucldt.exe
  • <SYSTEM32>\wuaucldt.exe
Deletes itself.
Network activity:
Connects to:
  • '16#.#09.180.1':443
  • '16#.#6.227.120':443
  • '12#.#19.252.105':443
  • '20#.#6.41.87':443
  • '91.##6.95.24':443
  • '20#.#18.111.122':443
  • '21#.#33.134.87':443
  • '21#.#2.216.42':443
  • '20#.#9.51.228':443
  • '21#.#2.72.183':443
  • '91.##3.146.30':443
  • '20#.#4.220.4':443
  • '20#.#43.10.165':443
  • '13#.#13.221.138':443
  • '20#.#92.143.87':443
  • '77.##0.104.50':443
  • '87.##9.184.105':443
  • '64.##.142.74':443
  • '82.##3.122.190':443
  • '21#.#71.131.16':443
  • '21#.#9.163.41':443
  • '77.##0.110.76':443
  • '69.##.149.166':443
  • '21#.#4.155.204':443
  • '20#.#34.223.237':443
  • '20#.#18.203.244':443
  • '77.##0.121.35':443
  • '21#.#25.95.245':443
  • '19#.#82.192.2':443
  • '<L###LNET>.0.2':443
  • '20#.#6.50.168':443
  • '20#.#18.170.179':443
  • '64.##1.68.169':443
  • '20#.#80.136.89':443
  • '21#.#57.5.25':443
  • '65.#4.140.3':443
  • '20#.#9.212.100':443
  • '21#.#11.198.59':443
  • '20#.#3.248.107':443
  • '19#.#14.214.53':443
  • '20#.#10.80.35':443
  • '69.##.128.35':443
  • '74.##5.87.69':443
  • '20#.#90.4.90':443
  • '11#.#25.150.227':443
  • '20#.#10.80.36':443
  • '20#.#79.38.26':443
  • '77.##0.99.240':443
  • '20#.#0.45.207':443
  • '20#.#91.113.9':443
  • '20#.#10.80.34':443
  • '20#.#64.228.11':443
  • '62.##9.23.110':443
  • '19#.#5.154.4':443
  • '19#.#78.147.110':443
  • '20#.#90.4.91':443
  • '13#.#9.92.68':443
  • '76.##4.232.140':443
  • 'is##.tup.km.ua':443
  • '76.##4.232.139':443
  • '20#.#34.192.141':443
  • '79.##1.122.236':443
  • '20#.#14.40.79':443
  • 'bo#####.kinokuniya.co.jp':443
  • '11#.#7.65.194':443
  • '76.##4.227.58':443
  • '21#.#86.115.36':443
  • '20#.#90.4.92':443
  • 'www.bi#####records.com.br':443
  • '76.##4.227.59':443
  • '76.##4.232.138':443
  • '10#.#2.122.165':443
  • '76.##4.227.60':443
  • '14#.#77.205.56':443
UDP:
  • DNS ASK www.ka###a.co.jp
  • DNS ASK n1.###anspamer.com
  • DNS ASK www.ru###.org.ua
  • DNS ASK www.in#e
  • DNS ASK www.tr######islandcasino.com.ua
  • DNS ASK www.mi#####ibiotec.co.jp
  • DNS ASK www.im###ca.com.br
  • DNS ASK www.nr#.co.jp
  • DNS ASK www.sc####e-forum.co.jp
  • DNS ASK ns#.##manspamer.com
  • DNS ASK lo##.#ray.com.br
  • DNS ASK www.36#.#-secom.jp
  • DNS ASK www.di###er.com.br
  • DNS ASK www.my###ipseide.jp
  • DNS ASK no###.com.ua
  • DNS ASK di####.ips.co.jp
  • DNS ASK www.im#####olheados.com.br
  • DNS ASK ms#.com.ua
  • DNS ASK www.ik##w.co.jp
  • DNS ASK sh##.poziti
  • DNS ASK fo##.cao.go.jp
  • DNS ASK ne###etter.go
  • DNS ASK cg.###.kyutech.ac.jp
  • DNS ASK an###.#veningquest.com
  • DNS ASK www.ma##ntz.jp
  • DNS ASK gl####-host.com.ua
  • DNS ASK www.ep#a
  • DNS ASK ir.####shima-u.ac.jp
  • DNS ASK www.wo###am.co.jp
  • DNS ASK we###er.co.ua
  • DNS ASK www.ri##ex.jp
  • DNS ASK bl###.#ightphantom.com
  • DNS ASK it#####.smartseminar.jp
  • DNS ASK ho####g.cnrg.com.ua
  • DNS ASK bu###r.org.ua
  • DNS ASK bo#####.kinokuniya.co.jp
  • DNS ASK is##.tup.km.ua
  • DNS ASK www.bi#####records.com.br
  • DNS ASK ap###.#eedexpo.co.jp
  • DNS ASK www.st##e.co.ua
  • DNS ASK www.ir#
  • DNS ASK www.gs##.keio.ac.jp
  • DNS ASK ch###rash.com
  • DNS ASK ra###.com.ua
  • DNS ASK m-####.lib.meiji.ac.jp
  • DNS ASK la#.##ganet.org.ua
  • DNS ASK ss#.#oressl.jp
  • DNS ASK se##re.fox
  • DNS ASK ss#.##rm-mailer.jp
  • DNS ASK www.aa##d.jp
  • DNS ASK ma####key.com.ua
  • DNS ASK www.gu####shop.com.br
  • DNS ASK fo###.gryada.org.ua
  • DNS ASK ss#.#ukro.ua
  • DNS ASK www.ji##.go.jp

Curing recommendations

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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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