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Mythen

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Android.Packed.54482

Added to the Dr.Web virus database: 2020-09-13

Virus description added: 2020-09-14

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.DownLoader.414.origin
Android.DownLoader.455.origin

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) ff.t####.com.####.com:80
TCP(HTTP/1.1) a.appj####.com:80
TCP(HTTP/1.1) t1.jz####.com:80
TCP(TLS/1.0) ssl.google-####.com:443
TCP t1.jz####.com:7102
TCP p1.jz####.com:7801
TCP t1.jz####.com:7803
TCP p2.jz####.com:7101
TCP p2.jz####.com:7102
TCP t1.jz####.com:7802
TCP p2.jz####.com:7103
TCP t1.jz####.com:7103
TCP p2.jz####.com:7802

DNS requests:

a.appj####.com
f.you####.com
ff.t####.com
p1.jz####.com
p2.jz####.com
p3.jz####.com
ssl.google-####.com
t1.jz####.com
t2.jz####.com
t3.jz####.com

HTTP GET requests:

ff.t####.com.####.com/d/455u.jpg
ff.t####.com.####.com/d/45ae.jpg
ff.t####.com.####.com/d/45aj.png
ff.t####.com.####.com/d/45ap.jpg
ff.t####.com.####.com/d/45b4.jpg
ff.t####.com.####.com/d/45b7.jpg
ff.t####.com.####.com/d/45bq.png
t1.jz####.com/cdn?id=####

HTTP POST requests:

a.appj####.com/ad-service/ad/mark

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/0356507059351895.db-journal
/data/data/####/16000249658371.jar
/data/data/####/16000249672571.jar
/data/data/####/16000249678011.jar
/data/data/####/E_ID356507059351895.db
/data/data/####/E_ID356507059351895.db-journal
/data/data/####/RLoveAnimationStickers.db
/data/data/####/RLoveAnimationStickers.db-journal
/data/data/####/ads188605938.jar
/data/data/####/fac_f_356507059351895.xml
/data/data/####/fappInfo_f_356507059351895.xml
/data/data/####/fconf_f_356507059351895.xml
/data/data/####/finfo_f_356507059351895.xml
/data/data/####/ftrategy_f_356507059351895.xml
/data/data/####/gaClientId
/data/data/####/google_analytics_v2.db-journal
/data/data/####/i.xml
/data/data/####/i_fac_pre356507059351895.xml
/data/data/####/i_finfo_pre356507059351895.xml
/data/data/####/i_fionf_pre356507059351895.xml
/data/data/####/jg_app_update_settings_random.xml
/data/data/####/libjiagu.so
/data/media/####/455u.jpg.dat
/data/media/####/45ae.jpg.dat
/data/media/####/45aj.png.dat
/data/media/####/45ap.jpg.dat
/data/media/####/45b4.jpg.dat
/data/media/####/45b7.jpg.dat
/data/media/####/45bq.png.dat

Miscellaneous:

Executes the following shell scripts:

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

Loads the following dynamic libraries:

libjiagu
show

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
DES

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.

Find out more about Dr.Web for Android

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