Adware.Gexin.4435

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) ssl.gst####.com:443
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) d####.pl####.com:443
TCP(TLS/1.0) www.go####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) www.gst####.com:443
TCP(TLS/1.0) res####.a####.com:443
TCP(TLS/1.0) adser####.go####.com:443
TCP(TLS/1.0) c####.bs.g####.####.com:443
TCP c####.g####.ig####.com:5224
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
adser####.go####.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c####.x####.com
c-h####.g####.com
d####.pl####.com
res####.a####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
sensors####.p####.com
ssl.gst####.com
www.go####.com
www.gst####.com

HTTP GET requests:

t####.c####.q####.####.com/config/hz-hzv3.conf
t####.c####.q####.####.com/tdata_YYn966
t####.c####.q####.####.com/tdata_eOt091

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1541598525041_2278
/data/data/####/1541598525807_2278
/data/data/####/1541598525884_2294
/data/data/####/1541598526914_2278
/data/data/####/1541598527874_2278
/data/data/####/1541598528087_2278
/data/data/####/1541598529520_2278
/data/data/####/1541598529626_2294
/data/data/####/1541598529928_2294
/data/data/####/1541598530262_2278
/data/data/####/1541598530641_2294
/data/data/####/1541598532314_2278
/data/data/####/1541598589899_2278
/data/data/####/1d2b904cbeadfb72ed9546111a231c85.0
/data/data/####/3151634181225.0
/data/data/####/6694247748ac8655a796e25c7edfceb495faa3219b0e452...08.xml
/data/data/####/8067b9b997f79c52ec1fee833093e9cdf8cd84ec22ddb5d...45.xml
/data/data/####/Archimedes_p1
/data/data/####/Archimedes_p2
/data/data/####/Archimedes_p3
/data/data/####/Archimedes_p4
/data/data/####/Archimedes_p5
/data/data/####/TDCloudSettingsConfig8E775A746AE0482CB7914BF56D3BB5DF.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_cloudcontrol1.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/c00bc1320aa9deb05dcef101e8a739db.xml
/data/data/####/com.pluosi.creditcard-journal
/data/data/####/com.pluosi.creditcard_preferences.xml
/data/data/####/com.sensorsdata.analytics.android.sdk.SensorsDataAPI.xml
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/iv
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/k.store
/data/data/####/libjiagu2053385250.so
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/pref.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/salt
/data/data/####/sensorsdata.xml
/data/data/####/share_name.xml
/data/data/####/tdata_YYn966
/data/data/####/tdata_YYn966.jar
/data/data/####/tdata_eOt091
/data/data/####/tdata_eOt091.jar
/data/data/####/tdid.xml
/data/media/####/.tcookieid
/data/media/####/1541598525976.db
/data/media/####/alsn20170807.db
/data/media/####/alsn20170807.db-journal
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.pluosi.creditcard.bin
/data/media/####/com.pluosi.creditcard.db
/data/media/####/tdata_YYn966
/data/media/####/tdata_eOt091
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.sdk.getui.GetuiPushService 25124 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.sdk.getui.GetuiPushService 25124 300 0

Loads the following dynamic libraries:

getuiext2
libjiagu2053385250

Uses the following algorithms to encrypt data:

AES
AES-CBC-PKCS5Padding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES
AES-CBC-PKCS5Padding

Uses special library to hide executable bytecode.

Gains access to geolocation.

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.

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