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Android.Backdoor.522

Added to the Dr.Web virus database: 2017-12-29

Virus description added:

Technical information

Malicious functions:
Executes code of the following detected threats:
  • Android.Backdoor.637.origin
  • Android.DownLoader.596.origin
Gains access to the ITelephony private interface.
Network activity:
Connecting to:
  • UDP(DNS) <Google DNS>
  • TCP(HTTP/1.1) mo####.ultrapr####.com:80
  • TCP(HTTP/1.1) pac####.ultrapr####.com:80
  • TCP(HTTP/1.1) adman####.android####.info:80
  • TCP(HTTP/1.1) r####.android####.info:80
  • TCP(HTTP/1.1) acc####.thefunn####.com:8100
  • TCP(HTTP/1.1) acc####.thefunn####.com:80
  • TCP(HTTP/1.1) d####.appsco####.com:80
  • TCP(HTTP/1.1) g####.m####.com:80
  • TCP(HTTP/1.1) w####.m####.in:80
  • TCP(HTTP/1.1) a####.wallh####.cc:80
DNS requests:
  • 238.212.58.####.arpa
  • 42.17.217.####.arpa
  • 67.20.217.####.arpa
  • 74.20.217.####.arpa
  • 77.20.217.####.arpa
  • a####.wallh####.cc
  • acc####.thefunn####.com
  • acco####.go####.com
  • adman####.android####.info
  • b####.android####.info
  • d####.appsco####.com
  • g####.m####.com
  • gp####.m####.com
  • hijo####.thefunn####.com
  • loading####.mids####.info
  • mo####.ultrapr####.com
  • p####.google####.com
  • pac####.ultrapr####.com
  • r####.android####.info
  • ssl.gst####.com
  • w####.m####.in
  • w####.m####.in.info
  • www.google####.com
HTTP GET requests:
  • a####.wallh####.cc/search?categories=####&resolutions=####&purity=####&r...
  • acc####.thefunn####.com/soft/59b1ed77a2edd.zip
  • acc####.thefunn####.com/soft/59f9b84c64333.zip
  • acc####.thefunn####.com/soft/5a178918b9258.zip
  • acc####.thefunn####.com/soft/5a21228959317.zip
  • acc####.thefunn####.com/soft/5a322c561a65e.zip
  • acc####.thefunn####.com/soft/5a3b83fe10153.zip
  • acc####.thefunn####.com/soft/5a459385bcd95.zip
  • adman####.android####.info/OffersApi/lanjie?publisher_id=####&slot=####&...
  • pac####.ultrapr####.com/Uploads/sdk/171212_fixservice-debug_10000_2_2.0_...
  • r####.android####.info/api/getSdk
  • r####.android####.info/api/getSelfUpdate?is_test=####&version=####&
  • r####.android####.info/api/timeInterval
  • r####.android####.info/upload/Selfupdate/20171213084930.7z
  • w####.m####.in/api/initOpen?tag=####&version=####&game_id=####
HTTP POST requests:
  • acc####.thefunn####.com:8100/Update/dystat
  • acc####.thefunn####.com:8100/Update/packageManageUpdate
  • acc####.thefunn####.com:8100/Update/packageUpdateResult
  • d####.appsco####.com/androidplus/?c=####&a=####
  • g####.m####.com/Grab/ip
  • mo####.ultrapr####.com/index.php?c=####&m=####
  • r####.android####.info/api/dystat
  • r####.android####.info/api/getPhoneDeviceInfo
  • w####.m####.in/api/getpagenew
Modified file system:
Creates the following files:
  • /data/local/####/accounts.db
  • /data/local/####/accounts.db-journal
  • /data/local/####/finsky.xml
  • /data/local/####/getprop_c
  • /data/local/####/gservices.db
  • /data/local/####/gservices.db-journal
  • /data/local/####/libfilesystem_monitor.so
  • /data/local/####/setprop_c
  • /data/local/####/zlt
  • /data/local/####/zlt_conf
  • /data/local/####/zltcheck
  • /data/local/####/zltdaemon
  • /system/app/bart.apk
  • /system/bin/getprop_c
  • /system/bin/setprop_c
  • <Package Folder>/cache/####/data_0
  • <Package Folder>/cache/####/data_1
  • <Package Folder>/cache/####/data_2
  • <Package Folder>/cache/####/data_3
  • <Package Folder>/cache/####/index
  • <Package Folder>/databases/webview.db-journal
  • <Package Folder>/databases/webviewCookiesChromium.db-journal
  • <Package Folder>/files/####/16327526
  • <Package Folder>/files/####/59b1ed77a2edd.zip
  • <Package Folder>/files/####/59f9b84c64333.zip
  • <Package Folder>/files/####/5a178918b9258.zip
  • <Package Folder>/files/####/5a21228959317.zip
  • <Package Folder>/files/####/5a322c561a65e.zip
  • <Package Folder>/files/####/5a3b83fe10153.zip
  • <Package Folder>/files/####/5a459385bcd95.zip
  • <Package Folder>/files/####/bart.apk
  • <Package Folder>/files/####/bart.apk_tmp
  • <Package Folder>/files/####/classes.dex
  • <Package Folder>/files/####/getprop_c
  • <Package Folder>/files/####/libfilesystem_monitor.so
  • <Package Folder>/files/####/libkrsdk.so
  • <Package Folder>/files/####/libnativeUtil.so
  • <Package Folder>/files/####/libso1.so
  • <Package Folder>/files/####/libun7z.so
  • <Package Folder>/files/####/runtime
  • <Package Folder>/files/####/setprop_c
  • <Package Folder>/files/####/source.zip
  • <Package Folder>/files/####/zlt
  • <Package Folder>/files/####/zlt.7z
  • <Package Folder>/files/####/zlt.7z_tmp
  • <Package Folder>/files/####/zltcheck
  • <Package Folder>/files/####/zltdaemon
  • <Package Folder>/files/12c708bcdfa9cc5e03c1be6073378622
  • <Package Folder>/shared_prefs/<Package>_preferences.xml
  • <Package Folder>/shared_prefs/SharedPreferences_cache.xml
  • <Package Folder>/shared_prefs/com.musenkishi.wally.sharedpreferences.xml
  • <Package Folder>/shared_prefs/com.solo.adsdk.preference.pkg.xml
  • <Package Folder>/shared_prefs/com.solo.adsdk.preference.user.xml
  • <Package Folder>/shared_prefs/config.xml
  • <Package Folder>/shared_prefs/get_ip_file.xml
  • <Package Folder>/shared_prefs/interval_config.xml
  • <Package Folder>/shared_prefs/log.xml
  • <Package Folder>/shared_prefs/module_cache.xml
  • <Package Folder>/shared_prefs/public_sp.xml
  • <Package Folder>/shared_prefs/receive_time_file.xml
  • <Package Folder>/shared_prefs/share_params.xml
  • <Package Folder>/shared_prefs/toor.xml
  • <SD-Card>/.android/juuid.bk
  • <SD-Card>/.androidID
  • <SD-Card>/.recordinterval
  • <SD-Card>/.temp/pureSdk
Miscellaneous:
Executes next shell scripts:
  • app_process /system/bin com.android.commands.pm.Pm install -r <Package Folder>/files/lxtemp/bart.apk
  • cat /sys/class/net/wlan0/address
  • chmod -R 777 /data/data/com.android.vending
  • chmod -R 777 /data/data/com.google.android.gms
  • chmod -R 777 /data/data/com.google.android.gsf
  • chmod -R 777 /data/local/fakeData/uploadData/GO_TEMP/
  • chmod -R 777 /data/system/users/0
  • chmod 644 /system/app/bart.apk
  • chmod 755 getprop_c setprop_c getprop setprop
  • chmod 777 /data/local/fakeData/uploadData/GO_TEMP/
  • chmod 777 /data/local/tmp/lt
  • chmod 777 /data/local/tmp/lt/zlt_conf
  • chmod 777 getprop_c libfilesystem_monitor.so setprop_c zlt zltcheck zltdaemon
  • chown root:shell getprop_c setprop_c getprop setprop
  • cp -rf /data/data/com.android.vending/shared_prefs/finsky.xml /data/local/fakeData/uploadData/GO_TEMP/finsky.xml
  • cp -rf /data/data/com.google.android.gms/shared_prefs/Checkin.xml /data/local/fakeData/uploadData/GO_TEMP/Checkin.xml
  • cp -rf /data/data/com.google.android.gms/shared_prefs/CheckinLogging.xml /data/local/fakeData/uploadData/GO_TEMP/CheckinLogging.xml
  • cp -rf /data/data/com.google.android.gms/shared_prefs/CheckinService.xml /data/local/fakeData/uploadData/GO_TEMP/CheckinService.xml
  • cp -rf /data/data/com.google.android.gms/shared_prefs/adid_settings.xml /data/local/fakeData/uploadData/GO_TEMP/adid_settings.xml
  • cp -rf /data/data/com.google.android.gms/shared_prefs/com.google.android.gcm.xml /data/local/fakeData/uploadData/GO_TEMP/com.google.android.gcm.xml
  • cp -rf /data/data/com.google.android.gsf/databases/gservices.db /data/local/fakeData/uploadData/GO_TEMP/gservices.db
  • cp -rf /data/data/com.google.android.gsf/databases/gservices.db-journal /data/local/fakeData/uploadData/GO_TEMP/gservices.db-journal
  • cp -rf /data/local/tmp/lt/getprop_c /data/local/tmp/lt/setprop_c /system/bin
  • cp -rf /data/system/users/0/accounts.db /data/local/fakeData/uploadData/GO_TEMP/accounts.db
  • cp -rf /data/system/users/0/accounts.db-journal /data/local/fakeData/uploadData/GO_TEMP/accounts.db-journal
  • cp -rf zltcheck getprop_c zltdaemon setprop_c libfilesystem_monitor.so zlt /data/local/tmp/lt
  • cp <Package Folder>/files/lxtemp/bart.apk /system/app/bart.apk
  • getprop ro.product.cpu.abi
  • getprop ro.product.cpu.abi2
  • grep zlt
  • ln -s getprop_c getprop
  • ln -s setprop_c setprop
  • mkdir /data/local/fakeData
  • mkdir /data/local/fakeData/uploadData
  • mkdir /data/local/fakeData/uploadData/GO_TEMP
  • mkdir /data/local/fakeData/uploadData/GO_TEMP/
  • mkdir /data/local/tmp/lt
  • mount -o remount,rw /data
  • mount -o remount,rw /system
  • ping -c 3 -w 10 accounts.google.com
  • ping -c 3 -w 10 android.clients.google.com
  • ping -c 3 -w 10 play.googleapis.com
  • ping -c 3 -w 10 ssl.gstatic.com
  • ping -c 3 -w 10 www.googleapis.com
  • ping -c 4 174.139.72.164
  • ps
  • rm getprop setprop
  • sh
  • su
Loads the following dynamic libraries:
  • libkrsdk
  • libso1
  • libun7z
  • nativeUtil
  • so1
Uses elevated priveleges.
Gains access to geolocation.
Gains access to network information.
Gains access to telephone information (number, imei, etc.).
Adds tasks to the system scheduler.
Displays its own windows over windows of other applications.

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