Adware.Gexin.8591

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) o####.map.b####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) c.appj####.com:80
TCP(HTTP/1.1) a.appj####.com:80
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) api.map.b####.com:443
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP c####.g####.ig####.com:5227
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.u####.com
a.appj####.com
api.map.b####.com
c####.g####.ig####.com
c-h####.g####.com
c.appj####.com
loc.map.b####.com
log.u####.com
o####.map.b####.com
s####.u####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net

HTTP GET requests:

t####.c####.q####.####.com/tdata_Soq141
t####.c####.q####.####.com/tdata_fEV688
t####.c####.q####.####.com/tdata_ntt510

HTTP POST requests:

a####.u####.com/app_logs
a.appj####.com/jiagu/check/upgrade
c-h####.g####.com/api.php?format=####&t=####
c.appj####.com/ad/splash/stats.html
loc.map.b####.com/sdk.php
o####.map.b####.com/offline_loc
sdk.o####.p####.####.com/api.php?format=####&t=####

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/1550054508916.log
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/ad_show_time.xml
/data/data/####/authStatus_com.cooyet.redenvelopes.xml
/data/data/####/authStatus_com.cooyet.redenvelopes;pushservice.xml
/data/data/####/authStatus_com.cooyet.redenvelopes;remote.xml
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/firll.dat
/data/data/####/gal.db
/data/data/####/gal.db-journal
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/hst.db
/data/data/####/hst.db-journal
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jg_app_update_settings_random.xml
/data/data/####/libcuid.so
/data/data/####/libjiagu.so
/data/data/####/multidex.version.xml
/data/data/####/ofl.config
/data/data/####/ofl_location.db
/data/data/####/ofl_location.db-journal
/data/data/####/ofl_statistics.db
/data/data/####/ofl_statistics.db-journal
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushk.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/tdata_Soq141
/data/data/####/tdata_Soq141.jar
/data/data/####/tdata_fEV688
/data/data/####/tdata_fEV688.jar
/data/data/####/tdata_ntt510
/data/data/####/tdata_ntt510.jar
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/umeng_socialize.xml
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/app.db
/data/media/####/com.cooyet.redenvelopes.bin
/data/media/####/com.cooyet.redenvelopes.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/conlts.dat
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/tdata_Soq141
/data/media/####/tdata_fEV688
/data/media/####/tdata_ntt510
/data/media/####/test.log
/data/media/####/yoh.dat
/data/media/####/yol.dat
/data/media/####/yom.dat

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.PushService 25362 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so

Loads the following dynamic libraries:

BaiduMapSDK_base_v4_2_1
getuiext2
libjiagu
locSDK7a
realm-jni

Uses the following algorithms to encrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
RSA
RSA-ECB-NoPadding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding

Uses special library to hide executable bytecode.

Gets information about location.

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.

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