Adware.Gexin.21087

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(HTTP/1.1) c.appj####.com:80
TCP(HTTP/1.1) d####.c####.l####.####.com:80
TCP(TLS/1.0) and####.google####.com:443
TCP(TLS/1.0) md####.google####.com:443
TCP(TLS/1.0) safebro####.google####.com:443
TCP(TLS/1.0) 1####.217.168.202:443
TCP(TLS/1.0) android####.go####.com:443
TCP(TLS/1.0) instant####.google####.com:443
TCP(TLS/1.0) p####.google####.com:443
TCP(TLS/1.0) www.google####.com:443
TCP(TLS/1.2) www.google####.com:443
TCP(TLS/1.2) 1####.217.168.206:443
TCP(TLS/1.2) 1####.217.168.202:443
TCP(TLS/1.2) 1####.250.179.195:443
TCP sdk.o####.t####.####.net:5224

DNS requests:

and####.google####.com
android####.go####.com
c.appj####.com
cm-1####.g####.com
instant####.google####.com
m####.8####.com
md####.google####.com
p####.google####.com
safebro####.google####.com
sdk.c####.g####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
www.google####.com

HTTP GET requests:

d####.c####.l####.####.com/config/hzv9.conf

HTTP POST requests:

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

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/29x29.png
/data/data/####/50x50.png
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/Cookies-journal
/data/data/####/H506FD36D.xml
/data/data/####/H506FD36D.xml.bak
/data/data/####/WebViewChromiumPrefs.xml
/data/data/####/ad_show_time.xml
/data/data/####/app.js
/data/data/####/appStorage.js
/data/data/####/btn_refresh.png
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/classes.dex
/data/data/####/classes.oat
/data/data/####/classes2.dex
/data/data/####/com.dream.mayanfinance_preferences.xml
/data/data/####/exchangeIdentity.json
/data/data/####/gears.gif
/data/data/####/getui_sp.xml
/data/data/####/icon(2).png
/data/data/####/iconfont.css
/data/data/####/iconfont.ttf
/data/data/####/index
/data/data/####/index.html
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jg_app_update_settings_random.xml
/data/data/####/jg_app_update_settings_random.xml.bak
/data/data/####/libjiagu.so
/data/data/####/loading1.gif
/data/data/####/loading1.jpg
/data/data/####/loading2.jpg
/data/data/####/loading3.jpg
/data/data/####/loading4.jpg
/data/data/####/logo.png
/data/data/####/logo_white.png
/data/data/####/manifest.json
/data/data/####/maya_logo.png
/data/data/####/metrics_guid
/data/data/####/mui.css
/data/data/####/mui.js
/data/data/####/mui.min.css
/data/data/####/mui.min.js
/data/data/####/mui.ttf
/data/data/####/net_break.png
/data/data/####/pdr.xml
/data/data/####/proc_auxv
/data/data/####/push.pid
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/start1.png
/data/data/####/stream_permission.xml
/data/data/####/the-real-index
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/welcome.html
/data/data/####/welcome.jpg
/data/data/####/welcome_page.png
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/com.dream.mayanfinance.bin
/data/media/####/temp.arm
/data/misc/####/primary.prof

Miscellaneous:

Executes the following shell scripts:

/system/bin/dex2oat --instruction-set=x86 --dex-file=<Package Folder>/.jiagu/classes.dex --dex-file=<Package Folder>/.jiagu/classes2.dex --oat-file=<Package Folder>/.jiagu/classes.oat --inline-depth-limit=0 --compiler-filter=speed
chmod 755 /data/user/0/<Package>/.jiagu/libjiagu.so

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
RSA
RSA-NONE-OAEPWithSHA1AndMGF1Padding

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.

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