Adware.Gexin.8242

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) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) ti####.c####.l####.####.com:80
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5226

DNS requests:

7j####.c####.z0.####.com
and####.b####.qq.com
c####.g####.ig####.com
c-h####.g####.com
pub-####.qin####.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_FhD658
t####.c####.q####.####.com/tdata_kgM272
t####.c####.q####.####.com/tdata_vHH584
ti####.c####.l####.####.com/config/hz-hzv3.conf

HTTP POST requests:

and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1002
/data/data/####/1004
/data/data/####/bugly_db_
/data/data/####/bugly_db_-journal
/data/data/####/cishoo.com.behealthyshot.BETA_VALUES.xml
/data/data/####/com_cishoo.db
/data/data/####/com_cishoo.db-journal
/data/data/####/crashrecord.xml
/data/data/####/crashrecord.xml (deleted)
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ4OTUyMzY1OTIz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ4OTUyMzY4Mjk4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ4OTUyMzY5MDE1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ4OTUyMzYxMDQz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ4OTUyNDAxNjYw;
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/i==1.2.0&&v0.4.0_1548952361164_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu975701646.so
/data/data/####/local_crash_lock
/data/data/####/native_record_lock
/data/data/####/native_record_lock (deleted)
/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/####/qihoo_jiagu_crash_report.xml
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/tdata_FhD658
/data/data/####/tdata_FhD658.jar
/data/data/####/tdata_kgM272
/data/data/####/tdata_kgM272.jar
/data/data/####/tdata_vHH584
/data/data/####/tdata_vHH584.jar
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_common_location.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/media/####/2019-01-31-16-32-24.txt
/data/media/####/2019-01-31-16-32-25.txt
/data/media/####/2019-01-31-16-32-26.txt
/data/media/####/2019-01-31-16-32-28.txt
/data/media/####/2019-01-31-16-32-29.txt
/data/media/####/2019-01-31-16-32-30.txt
/data/media/####/2019-01-31-16-32-33.txt
/data/media/####/2019-01-31-16-32-34.txt
/data/media/####/2019-01-31-16-32-36.txt
/data/media/####/2019-01-31-16-32-37.txt
/data/media/####/2019-01-31-16-32-40.txt
/data/media/####/2019-01-31-16-32-42.txt
/data/media/####/2019-01-31-16-32-44.txt
/data/media/####/2019-01-31-16-32-45.txt
/data/media/####/2019-01-31-16-32-46.txt
/data/media/####/2019-01-31-16-32-48.txt
/data/media/####/2019-01-31-16-32-49.txt
/data/media/####/2019-01-31-16-32-52.txt
/data/media/####/2019-01-31-16-32-53.txt
/data/media/####/2019-01-31-16-32-55.txt
/data/media/####/2019-01-31-16-32-56.txt
/data/media/####/2019-01-31-16-32-58.txt
/data/media/####/2019-01-31-16-33-00.txt
/data/media/####/2019-01-31-16-33-20.txt
/data/media/####/2019-01-31-16-33-21.txt
/data/media/####/2019-01-31-16-33-24.txt
/data/media/####/2019-01-31-16-33-25.txt
/data/media/####/2019-01-31-16-33-30.txt
/data/media/####/2019-01-31-16-33-31.txt
/data/media/####/2019-01-31-16-33-37.txt
/data/media/####/app.db
/data/media/####/cishoo.com.behealthyshot.bin
/data/media/####/cishoo.com.behealthyshot.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/tdata_FhD658
/data/media/####/tdata_kgM272
/data/media/####/tdata_vHH584
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

/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/sh -c getprop
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.DemoPushService 25452 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop
getprop ro.build.version.emui
getprop ro.build.version.opporom
getprop ro.miui.ui.version.name
getprop ro.smartisan.version
getprop ro.vivo.os.version
logcat -d -v threadtime
ls /sys/class/thermal
mount
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.DemoPushService 25452 300 0

Loads the following dynamic libraries:

Bugly
getuiext2
libjiagu975701646

Uses the following algorithms to encrypt data:

AES-CBC-PKCS7Padding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-GCM-NoPadding

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.

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