Adware.Gexin.6924

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) pub-####.qin####.com:80
TCP(HTTP/1.1) log.sn####.com.####.net:80
TCP(HTTP/1.1) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) log.sn####.com.####.net:443
TCP(TLS/1.0) 1####.217.168.238:443
TCP c####.g####.ig####.com:5224
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
c####.g####.ig####.com
c-h####.g####.com
is.sn####.com
log.sn####.com
plb####.u####.com
pub-####.qin####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
u####.u####.com

HTTP GET requests:

pub-####.qin####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_kgM272
t####.c####.q####.####.com/tdata_vHH584
ti####.c####.l####.####.com/config/hz-hzv3.conf

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
log.sn####.com.####.net/service/2/app_log_exception/?openudid=####&versi...
sdk.o####.p####.####.com/api.php?format=####&t=####

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/1545515936761
/data/data/####/1545515938014
/data/data/####/1545515938865
/data/data/####/1545515946601
/data/data/####/1545515950897
/data/data/####/1545515953634
/data/data/####/1545515957374
/data/data/####/1545515958301
/data/data/####/1545515959136
/data/data/####/1545515961586
/data/data/####/1545515962447
/data/data/####/1545515971746
/data/data/####/1545515972552
/data/data/####/1545515975354
/data/data/####/1545515976229
/data/data/####/1545515983645
/data/data/####/1545515984486
/data/data/####/1545515985953
/data/data/####/1545515986808
/data/data/####/1545515991887
/data/data/####/1545515992697
/data/data/####/1545515998854
/data/data/####/87d6abb90f44
/data/data/####/MultiDex.lock
/data/data/####/bookshelf_data_0-journal
/data/data/####/category_data_0-journal
/data/data/####/com.wefun.reader_ConfigPreference.xml
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTM2NjI4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTM4MDMx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTM4ODA0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTMxNzY1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTQ2NTIw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTQ3OTY5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTU3MzMz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTU4MjQw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTU5MDcy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTUwODAz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTUyODQz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTUzNTg0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTYxNTI5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTYyMzM0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTc1MjQw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTc2MTgy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTcxNjI1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTcyNDUz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTg0NDAx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTg1OTM5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTg2NzIw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTgzNTkz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTk5MDE0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTkxODE5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ1NTE1OTkyNjI1;
/data/data/####/downloader.db-journal
/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&&1.1.2_1545515936716_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu-1076437451.so
/data/data/####/multidex.version.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/ranking_data_0-journal
/data/data/####/run.pid
/data/data/####/tdata_kgM272
/data/data/####/tdata_kgM272.jar
/data/data/####/tdata_vHH584
/data/data/####/tdata_vHH584.jar
/data/data/####/tt_sdk_settings.xml
/data/data/####/ttopenadsdk.xml
/data/data/####/ttopensdk.db
/data/data/####/ttopensdk.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_common_location.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_general_config.xml.bak (deleted)
/data/data/####/umeng_it.cache
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.nomedia
/data/media/####/.umm.dat
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.wefun.reader.bin
/data/media/####/com.wefun.reader.db
/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
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.push.AppPushService 24587 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop ro.build.version.emui
getprop ro.letv.release.version
getprop ro.vivo.os.build.display.id
ls /sys/class/thermal
mount
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.push.AppPushService 24587 300 0

Loads the following dynamic libraries:

getuiext2
libjiagu-1076437451

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding

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.

Gets information about running apps.

Adds tasks to the system scheduler.

Technologies

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Training and education

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