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Mythen

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Android.DownLoader.3555

Added to the Dr.Web virus database: 2018-04-15

Virus description added: 2018-04-16

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.DownLoader.363.origin

Downloads the following detected threats from the Web:

Android.DownLoader.363.origin

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) flow-us####.b0.a####.com:80
TCP(HTTP/1.1) 52.2####.159.235:80
TCP(HTTP/1.1) z####.heyc####.net:80
TCP(HTTP/1.1) z####.v####.info:80
TCP(TLS/1.0) 1####.217.17.110:443

DNS requests:

flow3us####.mind####.com
z####.heyc####.net
z####.v####.info

HTTP GET requests:

flow-us####.b0.a####.com/activity/1509008574877/1509008574877.png
flow-us####.b0.a####.com/activity/1509008891568/1509008891568.png
flow-us####.b0.a####.com/activity/1509438230855/1509438230855.jpg
z####.v####.info/fdlsa/77c5c7134184dd452a1c87aeb3aaf188?aid=####

HTTP POST requests:

z####.heyc####.net/getlist
z####.heyc####.net/xlogin

Modified file system:

Creates the following files:

/data/data/####/-1163722320-1982943584
/data/data/####/-11637223201079021024
/data/data/####/-1163722320583868386
/data/data/####/AppFirstSetting.xml
/data/data/####/accountinfo.xml
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/configs.xml
/data/data/####/dpi
/data/data/####/hid.db
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/updatedata.jar
/data/media/####/.nid
/data/media/####/6e11b5d9a1ca14efa76e07164bfd82f9.0.tmp
/data/media/####/9703f5f7004d918be68e4a7100c09826.0.tmp
/data/media/####/b81d904b74a9ad0dda942f046ba2691a.0.tmp
/data/media/####/idconfig.json
/data/media/####/journal
/data/media/####/journal.tmp

Miscellaneous:

Executes next shell scripts:

/system/bin/sh
cat /sys/class/android_usb/android0/idProduct
cat /sys/class/android_usb/android0/idVendor
getprop
ls -l /dev
ls -l /dev/block
ls -l /dev/block/vold
ls -l /dev/com.android.settings.daemon
ls -l /dev/cpuctl
ls -l /dev/cpuctl/apps
ls -l /dev/cpuctl/apps/bg_non_interactive
ls -l /dev/graphics
ls -l /dev/input
ls -l /dev/log
ls -l /dev/pts
ls -l /dev/snd
ls -l /dev/socket
ps

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding

Gains access to network information.

Gains access to telephone information (number, imei, etc.).

Gains access to information about APN settings.

Displays its own windows over windows of other applications.

Curing recommendations

Android

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.
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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