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Android.Packed.41352

Added to the Dr.Web virus database: 2018-12-04

Virus description added: 2018-12-05

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.DownLoader.570.origin

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) ff.t####.com.####.com:80
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) www.p####.com:80
TCP(HTTP/1.1) oc.u####.com:80
TCP t1.jz####.com:7703
TCP s1.sk####.com:9702
TCP t1.jz####.com:7701
TCP s1.sk####.com:9701
TCP t1.jz####.com:7702
TCP s3.sk####.com:9703

DNS requests:

a####.u####.com
feed####.u####.com
ff.t####.com
oc.u####.com
s1.sk####.com
s2.sk####.com
s3.sk####.com
t1.jz####.com
t2.jz####.com
t3.jz####.com
www.p####.com

HTTP GET requests:

ff.t####.com.####.com/d/4170.jpg
ff.t####.com.####.com/d/43wk.jpg
ff.t####.com.####.com/d/44y3.jpg
ff.t####.com.####.com/d/44y6.jpg
ff.t####.com.####.com/d/44ye.jpg

HTTP POST requests:

a####.u####.com/app_logs
oc.u####.com/check_config_update
www.p####.com/apiv1/sdkstat/install
www.p####.com/apiv1/sdkstat/launch
www.p####.com/apiv1/update/check

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/1543962706925s.jar
/data/data/####/1543962707211a.jar
/data/data/####/a.xml
/data/data/####/a1.db-journal
/data/data/####/a1.xml
/data/data/####/a1356507059351895.xml
/data/data/####/a356507059351895.xml
/data/data/####/b1356507059351895.xml
/data/data/####/b356507059351895.xml
/data/data/####/c1356507059351895.xml
/data/data/####/c356507059351895.xml
/data/data/####/com.wbswlsy.android.gzzz_preferences.xml
/data/data/####/d1356507059351895.xml
/data/data/####/libjiagu.so
/data/data/####/mobclick_agent_online_setting_com.wbswlsy.android.gzzz.xml
/data/data/####/pgyersdk.xml
/data/data/####/sd.db-journal
/data/data/####/umake.conf
/data/data/####/umeng_feedback_conversations.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/webview.db-journal
/data/media/####/4170.jpg.data
/data/media/####/43wk.jpg.data
/data/media/####/44y3.jpg.data
/data/media/####/44y6.jpg.data
/data/media/####/44ye.jpg.data
/data/media/####/gzzz
/data/media/####/gzzz-journal

Miscellaneous:

Executes the following shell scripts:

chmod 755 <Package Folder>/files/libjiagu.so

Loads the following dynamic libraries:

libjiagu

Uses the following algorithms to encrypt data:

DESede

Uses special library to hide executable bytecode.

Gets information about network.

Gets information about phone status (number, IMEI, etc.).

Gets information about installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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.

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