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Android.Packed.38441

Added to the Dr.Web virus database: 2018-06-11

Virus description added: 2018-06-12

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.DownLoader.2776
Android.DownLoader.570.origin
Android.DownLoader.698.origin

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) ff.t####.com.####.com:80
TCP(HTTP/1.1) android####.cos.myqc####.com:80
TCP(HTTP/1.1) c.appj####.com:80
TCP(TLS/1.0) sett####.crashly####.com:443
TCP x2.v####.com:7602
TCP a3.a####.com:7701
TCP x1.v####.com:7601
TCP a3.a####.com:7703
TCP x2.v####.com:7603
TCP a3.a####.com:7702

DNS requests:

a3.a####.com
android####.cos.myqc####.com
c.appj####.com
ff.t####.com
sett####.crashly####.com
x1.v####.com
x2.v####.com
x3.v####.com

HTTP GET requests:

android####.cos.myqc####.com/bt_search7.json
ff.t####.com.####.com/d/43cv.apk
ff.t####.com.####.com/d/43cw.png
ff.t####.com.####.com/d/43cz.png

HTTP POST requests:

c.appj####.com/ad/splash/stats.html

Modified file system:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1.jar
/data/data/####/41526453959346.jar
/data/data/####/TwitterAdvertisingInfoPreferences.xml
/data/data/####/aa.xml
/data/data/####/aa356507059351895.xml
/data/data/####/ad_show_time.xml
/data/data/####/bb356507059351895.xml
/data/data/####/cc356507059351895.xml
/data/data/####/com.crashlytics.prefs.xml
/data/data/####/com.crashlytics.sdk.android;answers;settings.xml
/data/data/####/cookie_search.xml
/data/data/####/d.db-journal
/data/data/####/dd356507059351895.xml
/data/data/####/ff356507059351895.xml
/data/data/####/jg_app_update_settings_random.xml
/data/data/####/libjiagu.so
/data/data/####/multidex.version.xml
/data/data/####/oi.db
/data/data/####/oi.db-journal
/data/data/####/sa_d35797a7-f08c-4646-89b4-d420bed57365_1526453959469.tap
/data/data/####/session_analytics.tap
/data/data/####/session_analytics.tap.tmp
/data/data/####/xappInfo_pre.xml
/data/data/####/xconf_pre.xml
/data/data/####/xinfo_pre.xml
/data/data/####/xtrategy_pre.xml
/data/media/####/43cw.png.data
/data/media/####/43cz.png.data
/data/media/####/b_43cv.apk.c

Miscellaneous:

Executes next shell scripts:

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

Loads the following dynamic libraries:

ii
libjiagu

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
RSA

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
DES

Uses special library to hide executable bytecode.

Gains access to network information.

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

Gains access to information about installed applications.

Adds tasks to the system scheduler.

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.

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