Adware.Gexin.3461

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) aexcep####.b####.qq.com:8011
TCP(HTTP/1.1) l####.tbs.qq.com:80
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) aexcep####.b####.qq.com:8012
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) st####.msy####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) oc.u####.com:80
TCP(HTTP/1.1) f####.msy####.com.####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) l####.cc:80
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(TLS/1.0) st####.msy####.com:443
TCP(TLS/1.0) m.msy####.com:443
TCP(TLS/1.0) res####.a####.com:443
TCP(TLS/1.0) 1####.217.20.110:443
TCP(TLS/1.0) df.baiq####.com:443
TCP c####.g####.ig####.com:5225
TCP df.baiq####.com:9080
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.b####.qq.com
a####.u####.com
aexcep####.b####.qq.com
amap####.cn-hang####.oss####.####.com
and####.b####.qq.com
c####.g####.ig####.com
df.baiq####.com
f####.msy####.com
h5.msy####.com
l####.cc
l####.tbs.qq.com
m.msy####.com
oc.u####.com
res####.a####.com
sdk.o####.i####.####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
st####.msy####.com

HTTP GET requests:

f####.msy####.com.####.com/app/filedownload/apk/yd_xiaomi_4.5.5.apk
sh.wagbr####.aliyun####.com/sdkcoor/android/x86/libJni_wgs2gcj.so
st####.msy####.com/images/mobile/front/project/caicaile@3x.png
st####.msy####.com/images/mobile/front/project/licai@3x.png
st####.msy####.com/images/mobile/front/project/qiandai@3x.png
t####.c####.q####.####.com/tdata_xIJ313

HTTP POST requests:

a####.u####.com/app_logs
aexcep####.b####.qq.com:8011/rqd/async
aexcep####.b####.qq.com:8012/rqd/async
and####.b####.qq.com/rqd/async
l####.cc/i/sdk/close
l####.cc/i/sdk/install
l####.cc/i/sdk/open
l####.tbs.qq.com/ajax?c=####&k=####
oc.u####.com/check_config_update
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/076a1dc26520fa61c644cdd775727c7c.0.tmp
/data/data/####/076a1dc26520fa61c644cdd775727c7c.1.tmp
/data/data/####/1bca7626a63755c394e3961a5d548d62.0.tmp
/data/data/####/1bca7626a63755c394e3961a5d548d62.1.tmp
/data/data/####/1d2b904cbeadfb72ed9546111a231c85.0
/data/data/####/35f1075afcc2ce2f71ba36dddf673dc6.0.tmp
/data/data/####/35f1075afcc2ce2f71ba36dddf673dc6.1.tmp
/data/data/####/56bdcd909ca04663420dbce6a18bd6ef.0.tmp
/data/data/####/56bdcd909ca04663420dbce6a18bd6ef.1.tmp
/data/data/####/5ae8fc11768b6fff60986cf82c7540e3.0.tmp
/data/data/####/5ae8fc11768b6fff60986cf82c7540e3.1.tmp
/data/data/####/5ea3032738bb469757f7546a849cff12.0.tmp
/data/data/####/5ea3032738bb469757f7546a849cff12.1.tmp
/data/data/####/6340e3f066e57288b46f7ac7e8f85e79.0.tmp
/data/data/####/6340e3f066e57288b46f7ac7e8f85e79.1.tmp
/data/data/####/695d20afe11af228b2b015543695d918.0.tmp
/data/data/####/695d20afe11af228b2b015543695d918.1.tmp
/data/data/####/823f7f07917a18aa6e0b238d5df04d32.0.tmp
/data/data/####/823f7f07917a18aa6e0b238d5df04d32.1.tmp
/data/data/####/8e041dedb1975882ec15ad7f049f0b07.0.tmp
/data/data/####/8e041dedb1975882ec15ad7f049f0b07.1.tmp
/data/data/####/9d3d3cf0a7087ba0f617370625d74cf8.0.tmp
/data/data/####/9d3d3cf0a7087ba0f617370625d74cf8.1.tmp
/data/data/####/DB_MSYD
/data/data/####/DB_MSYD-journal
/data/data/####/KEY_IS_XD_OPEN.xml
/data/data/####/LKME_Server_Request_Queue.xml
/data/data/####/MultiDex.lock
/data/data/####/PREFERENCES_DEVICE.xml
/data/data/####/PREFERENCES_LockTimeStore.xml
/data/data/####/PreferencesGuideUtils.xml
/data/data/####/PreferencesMsyd.xml
/data/data/####/StaticConfig.xml
/data/data/####/b828271e8a4a8f025ebf7505d28087f7.0.tmp
/data/data/####/b828271e8a4a8f025ebf7505d28087f7.1.tmp
/data/data/####/b902ee49fd131fd842f3544a4822739e
/data/data/####/bugly_db_legu-journal
/data/data/####/c5c5d81b-7792-464a-990f-f4469dfd6de6.jpg
/data/data/####/core_info
/data/data/####/dafile.db
/data/data/####/dafile.db-journal
/data/data/####/ec40a62b970de6714fc796cb86547706.0.tmp
/data/data/####/ec40a62b970de6714fc796cb86547706.1.tmp
/data/data/####/f8df473e1c3560bef8fc2ab56258f3b8.0.tmp
/data/data/####/f8df473e1c3560bef8fc2ab56258f3b8.1.tmp
/data/data/####/f976aa5b69636c65a11373d053b36eb0.0.tmp
/data/data/####/f976aa5b69636c65a11373d053b36eb0.1.tmp
/data/data/####/getui_sp.xml
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/increment.db-journal
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/init_er.pid
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/k.store
/data/data/####/libnfix.so
/data/data/####/libshella-2.8.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/linkedme_referral_shared_pref.xml
/data/data/####/linkedme_referral_shared_pref.xml.bak
/data/data/####/loadimagesp.xml
/data/data/####/local_crash_lock
/data/data/####/loctemp.so
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/mix.dex
/data/data/####/mobclick_agent_online_setting_com.msyd.client.xml
/data/data/####/msyd.db
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/data/data/####/pref.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/sp_active_dialog.xml
/data/data/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/tdata_xIJ313.jar
/data/data/####/tdata_xIJ313.tmp
/data/data/####/tmpd8.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/webview.db-journal
/data/media/####/.lm_device_id
/data/media/####/.lm_device_info
/data/media/####/1539170516568.db
/data/media/####/1539170518442.db
/data/media/####/alsn.db
/data/media/####/alsn.db-journal
/data/media/####/alsn20170807.db
/data/media/####/alsn20170807.db-journal
/data/media/####/app.db
/data/media/####/b902ee49fd131fd842f3544a4822739e
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.msyd.client.db
/data/media/####/msyd.apk
/data/media/####/tbslog.txt
/data/media/####/tdata_xIJ313

Miscellaneous:

Executes next shell scripts:

/system/bin/cat /proc/cpuinfo
/system/bin/sh -c getprop ro.aa.romver
/system/bin/sh -c getprop ro.board.platform
/system/bin/sh -c getprop ro.build.fingerprint
/system/bin/sh -c getprop ro.build.nubia.rom.name
/system/bin/sh -c getprop ro.build.rom.id
/system/bin/sh -c getprop ro.build.tyd.kbstyle_version
/system/bin/sh -c getprop ro.build.version.emui
/system/bin/sh -c getprop ro.build.version.opporom
/system/bin/sh -c getprop ro.gn.gnromvernumber
/system/bin/sh -c getprop ro.lenovo.series
/system/bin/sh -c getprop ro.lewa.version
/system/bin/sh -c getprop ro.meizu.product.model
/system/bin/sh -c getprop ro.miui.ui.version.name
/system/bin/sh -c getprop ro.vivo.os.build.display.id
/system/bin/sh -c type su
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.8.so
chmod 700 <Package Folder>/tx_shell/libshella-2.9.0.2.so
chmod 700 <Package Folder>/tx_shell/libufix.so
getprop dalvik.vm.heapgrowthlimit
getprop dalvik.vm.heapsize
getprop dalvik.vm.heapstartsize
getprop ro.aa.romver
getprop ro.board.platform
getprop ro.build.characteristics
getprop ro.build.fingerprint
getprop ro.build.nubia.rom.name
getprop ro.build.rom.id
getprop ro.build.tyd.kbstyle_version
getprop ro.build.version.emui
getprop ro.build.version.opporom
getprop ro.gn.gnromvernumber
getprop ro.lenovo.series
getprop ro.lewa.version
getprop ro.meizu.product.model
getprop ro.miui.ui.version.name
getprop ro.product.cpu.abi
getprop ro.vivo.os.build.display.id
getprop ro.yunos.version
logcat -d -v threadtime

Loads the following dynamic libraries:

Bugly
getuiext2
libnfix
libshella-2.8
libshella-2.9.0.2
libufix
msyd
nfix
pl_droidsonroids_gif
ufix

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-GCM-NoPadding
DES-CBC-PKCS5Padding
RSA-ECB-NoPadding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-GCM-NoPadding

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

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