Adware.Gexin.4440

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) pub-####.qin####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) a####.exc.mob.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) p####.tc.qq.com:80
TCP(HTTP/1.1) s####.e.qq.com:80
TCP(HTTP/1.1) mi.g####.qq.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) app.ul####.net:443
TCP(TLS/1.0) qy-swa####.qi####.com:443
TCP c####.g####.ig####.com:5227
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
app.ul####.net
c####.g####.ig####.com
c-h####.g####.com
imgc####.qq.com
log.u####.com
mi.g####.qq.com
plb####.u####.com
pub-####.qin####.com
qy-swa####.qi####.com
s####.e.qq.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net

HTTP GET requests:

mi.g####.qq.com/gdt_mview.fcg?posw=####&posh=####&count=####&r=####&data...
mi.g####.qq.com/gdt_mview.fcg?posw=####&spsa=####&posh=####&count=####&r...
p####.tc.qq.com/qzone/biz/gdt/mod/android/AndroidAllInOne/proguard/his/r...
pub-####.qin####.com/tdata_EDT356
t####.c####.q####.####.com/config/hz-hzv3.conf
t####.c####.q####.####.com/tdata_MkX219
t####.c####.q####.####.com/tdata_iGj879

HTTP POST requests:

a####.exc.mob.com/errconf
c-h####.g####.com/api.php?format=####&t=####
s####.e.qq.com/activate
s####.e.qq.com/launch
s####.e.qq.com/msg
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/com.youlitech.tanwanmao/####/.jg.ic
/data/com.youlitech.tanwanmao/####/.vpl_lock
/data/com.youlitech.tanwanmao/####/mob_commons_1
/data/com.youlitech.tanwanmao/unicorn#cheese#
/data/data/####/.duid
/data/data/####/.jg.ic
/data/data/####/.lock
/data/data/####/.vpl_lock
/data/data/####/4277.yaqcookie
/data/data/####/5f7169ccb48d
/data/data/####/7d661530fa3ba3b7dc185df1aa5b223d.0.tmp
/data/data/####/7d661530fa3ba3b7dc185df1aa5b223d.1.tmp
/data/data/####/BuglySdkInfos.xml
/data/data/####/GDTSDK.db
/data/data/####/GDTSDK.db-journal
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/ULiBaoData.xml
/data/data/####/com.qiyukf.analytics.xml
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk4ODk2MjMz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk4OTE4ODEx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk4OTQ4Njgy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk4OTU5Njgy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk4OTUzNDMy;
/data/data/####/dW1weF9zaGFyZV8xNTQxNTk4OTAxMDM1;
/data/data/####/dW1weF9zaGFyZV8xNTQxNTk4OTAxNjM0;
/data/data/####/devCloudSetting.cfg
/data/data/####/devCloudSetting.sig
/data/data/####/dexMethod.10168385.dat
/data/data/####/domain_1
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdaemon_20161017
/data/data/####/gdt_plugin.dex (deleted)
/data/data/####/gdt_plugin.jar
/data/data/####/gdt_plugin.jar.sig
/data/data/####/gdt_plugin.tmp
/data/data/####/gdt_plugin.tmp.sig
/data/data/####/gdt_suid
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/i==1.2.0&&1.2.7_1541598949068_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/journal.tmp
/data/data/####/libjiagu-533660687.so
/data/data/####/libyaqbasic.10168385.so
/data/data/####/libyaqpro.10168385.so
/data/data/####/m_cvnull
/data/data/####/m_cvnull-journal
/data/data/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/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/####/qihoo_jiagu_crash_report.xml
/data/data/####/qiyu_save_df33db3edd89f3223f60db068d820a98.xml
/data/data/####/run.pid
/data/data/####/sdkCloudSetting.cfg
/data/data/####/sdkCloudSetting.sig
/data/data/####/share.db-journal
/data/data/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_iGj879
/data/data/####/tdata_iGj879.jar
/data/data/####/trans-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/data/####/umeng_socialize.xml
/data/data/####/unicorn#cheese#
/data/data/####/update_lc
/data/data/####/yaqsdkcookie
/data/media/####/.artc_lock
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.im_lock
/data/media/####/.lesd_lock
/data/media/####/.mn_-1464060969
/data/media/####/.nomedia
/data/media/####/.pkg_lock
/data/media/####/.pkgs_lock
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.ss_lock
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.youlitech.tanwanmao.bin
/data/media/####/com.youlitech.tanwanmao.db
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.log
/data/media/####/tmp_u_20181107
/drw/cmds/10043.2725.d8fa4949-b56a-3ae6-92b9-5cbd79ee7ca0.stdout.txt
/drw/cmds/10043.2725.d8fa4949-b56a-3ae6-92b9-5cbd79ee7ca0.txt

Miscellaneous:

Executes next 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>.getui.GeTuiPushService 25359 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
ls /sys/class/thermal
mount

Loads the following dynamic libraries:

getuiext2
libjiagu-533660687
libyaqbasic.10168385
libyaqpro.10168385

Uses the following algorithms to encrypt data:

AES-ECB-PKCS7Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-ECB-NoPadding
AES-ECB-PKCS7Padding
RSA-ECB-PKCS1Padding

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.

Technologies

Terminology

Training and education

Myths

Technical information

Curing recommendations

Free trial