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Adware.Gexin.20315

Added to the Dr.Web virus database: 2020-05-15

Virus description added: 2020-05-15

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connects to:

UDP(DNS) 8####.8.4.4:53
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) 2####.58.214.14:443
TCP(TLS/1.0) www.google####.com:443
TCP(TLS/1.0) 1####.217.19.195:443
TCP(TLS/1.0) secgw-n####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) dualsta####.wagbr####.ali####.####.com:443
TCP(TLS/1.2) 2####.58.214.14:443
UDP 1####.254.113.47:44458
UDP 1####.254.113.47:44469
UDP 1####.254.113.47:44457
UDP 1####.254.113.47:44454
UDP 1####.254.113.47:44455
UDP 1####.254.113.47:44470
UDP 1####.254.113.47:44459
UDP 1####.254.113.47:44462
UDP 1####.254.113.47:44471
UDP 1####.254.113.47:44472
UDP 1####.254.113.47:44466
UDP 1####.254.113.47:44473
UDP 1####.254.113.47:44465
UDP 1####.254.113.47:44474
UDP 1####.254.113.47:44464
UDP 1####.0.9.1:137
UDP 1####.254.113.47:44463
UDP 1####.254.113.47:44468
UDP 1####.254.113.47:44444
UDP 1####.254.113.47:44447
UDP 1####.254.113.47:44461
UDP 1####.254.113.47:44467
UDP 1####.254.113.47:44460
UDP 1####.254.113.47:44449
UDP 1####.254.113.47:44448
UDP 1####.254.113.47:44452
UDP 1####.254.113.47:44453
UDP 1####.254.113.47:44450
UDP 1####.254.113.47:44446
UDP 1####.254.113.47:44445
UDP 1####.254.113.47:44451
UDP 1####.254.113.47:44456

DNS requests:

and####.google####.com
log.u####.com
plb####.u####.com
sec.u####.com
u####.u####.com
www.google####.com

File system changes:

Creates the following files:

/data/data/####/.cl
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/.jgck
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/a==7.5.3&&2.0.5_1589517036951_envelope.log
/data/data/####/a==7.5.3&&2.0.5_1589517062171_envelope.log
/data/data/####/a==7.5.3&&2.0.5_1589517078377_envelope.log
/data/data/####/be7b7b05-7ca6-433e-b4b8-e26585aa3a9b
/data/data/####/classes.dex
/data/data/####/classes.dex;classes2.dex
/data/data/####/classes.oat
/data/data/####/dW1weF9pbnRlcm5hbF8xNTg5NTE3MDcwNDIx;
/data/data/####/dc461FA49843410EA2
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/i==1.2.0&&2.0.5_1589517070563_envelope.log
/data/data/####/info.xml
/data/data/####/libjiagu.so
/data/data/####/proc_auxv
/data/data/####/share.db-journal
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_pri.xml
/data/data/####/umdat.xml
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/umeng_socialize.xml
/data/misc/####/primary.prof

Miscellaneous:

Executes the following shell scripts:

/data/user/0/<Package>/app_06851326-179e-4f06-8472-d5e78a1ab259/dc461FA49843410EA2
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
/system/bin/dex2oat --instruction-set=x86 --dex-file=<Package Folder>/.jiagu/classes.dex --dex-file=<Package Folder>/.jiagu/classes.dex:classes2.dex --oat-file=<Package Folder>/.jiagu/classes.oat --inline-depth-limit=0 --compiler-filter=speed
ls /
ls /sys/class/thermal

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding

Accesses the ITelephony private interface.

Uses special library to hide executable bytecode.

Gets information about network.

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

Displays its own windows over windows of other apps.

Curing recommendations

If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.

Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

Download Dr.Web

Download by serial number

Download on App Store

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

If the mobile device is operating normally, download and install Dr.Web for Android. 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 for Android 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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