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Android.Hidden.4790

Added to the Dr.Web virus database: 2018-02-09

Virus description added:

Technical information

Malicious functions:
Removes its shortcut from the home screen.
Network activity:
Connecting to:
  • UDP(DNS) <Google DNS>
  • TCP(HTTP/1.1) cg####.com:80
DNS requests:
  • cg####.com
HTTP POST requests:
  • cg####.com/admin/hr/pu//pu.php?do=####
Modified file system:
Creates the following files:
  • /data/anr/traces.txt
  • <Package Folder>/files/10_d20171116122811.json
  • <Package Folder>/files/10_d20171116122811.jsonx
  • <Package Folder>/files/10_d20171116122816.json
  • <Package Folder>/files/10_d20171116122816.jsonx
  • <Package Folder>/files/10_d20171116122818.json
  • <Package Folder>/files/10_d20171116122818.jsonx
  • <Package Folder>/files/20_d20171116122811.json
  • <Package Folder>/files/20_d20171116122811.jsonx
  • <Package Folder>/files/20_d20171116122816.json
  • <Package Folder>/files/20_d20171116122816.jsonx
  • <Package Folder>/files/20_d20171116122818.json
  • <Package Folder>/files/20_d20171116122818.jsonx
  • <Package Folder>/files/80_d20171116122810.txt
  • <Package Folder>/files/80_d20171116122810.txtx
  • <Package Folder>/files/80_d20171116122811.txt
  • <Package Folder>/files/80_d20171116122816.txt
  • <Package Folder>/files/80_d20171116122818.txt
  • <Package Folder>/files/90_d20171116122811.json
  • <Package Folder>/files/90_d20171116122811.jsonx
  • <Package Folder>/files/90_d20171116122816.json
  • <Package Folder>/files/90_d20171116122816.jsonx
  • <Package Folder>/files/90_d20171116122818.json
  • <Package Folder>/files/90_d20171116122818.jsonx
  • <Package Folder>/files/a0_d20171116122811.json
  • <Package Folder>/files/a0_d20171116122811.jsonx
  • <Package Folder>/files/a0_d20171116122816.json
  • <Package Folder>/files/a0_d20171116122816.jsonx
  • <Package Folder>/files/a0_d20171116122818.json
  • <Package Folder>/files/a0_d20171116122818.jsonx
  • <Package Folder>/files/f3_d20171116122811.zip
  • <Package Folder>/files/f3_d20171116122816.zip
  • <Package Folder>/files/f3_d20171116122818.zip
  • <Package Folder>/shared_prefs/<Package>.xml
  • <Package Folder>/shared_prefs/com.google.android.gms.measurement.prefs.xml
Miscellaneous:
Executes next shell scripts:
  • /system/bin/su -c cd /
  • /system/bin/su -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122810.txt
  • /system/bin/su -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122811.txt
  • /system/bin/su -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122816.txt
  • /system/bin/su -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122818.txt
  • cat /proc/self/status | grep Cap
  • cd /
  • id
  • ls acct cache config d data default.prop dev etc file_contexts init init.rc init.superuser.rc init.trace.rc init.usb.rc init.x86.rc lib mnt proc property_contexts sbin sdcard seapp_contexts selinux sepolicy storage sys system ueventd.android_x86.rc ueventd.rc vendor x86.prop -R -a -l
  • sh -c cd /
  • sh -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122811.txt
  • sh -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122816.txt
  • sh -c ls * -R -a -l >> <Package Folder>/files/80_d20171116122818.txt
Uses the following algorithms to encrypt data:
  • AES
Uses elevated priveleges.
Gains access to information about accounts (Google, Facebook, etc.) registered on the device.
Adds tasks to the system scheduler.
Gains access to information about incoming/outgoing calls.
Gains access to information about sent/received SMS messages.

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