Adware.Gexin.270

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) c-h####.g####.com:80
TCP(HTTP/1.1) l####.tbs.qq.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) sensors####.we####.xk####.net:8006
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) l####.cc:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(TLS/1.0) ope####.b####.com:443
TCP(TLS/1.0) res####.a####.com:443
TCP(TLS/1.0) we####.xk####.net:443
TCP c####.g####.ig####.com:5224
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
amap####.cn-hang####.oss####.####.com
and####.b####.qq.com
c####.g####.ig####.com
c-h####.g####.com
l####.cc
l####.tbs.qq.com
ope####.b####.com
res####.a####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
sensors####.we####.xk####.net
we####.xk####.net

HTTP GET requests:

l####.cc/i/sdk/is_gal?imei_md5=####&os=####&p_chklst_version=####&retry_...
sensors####.we####.xk####.net:8006/config/Android.conf
sensors####.we####.xk####.net:8006/config/Android.conf?v=####
sh.wagbr####.aliyun####.com/sdkcoor/android/x86/libJni_wgs2gcj.so
sni.c####.q####.####.net/config/hz-hzv3.conf
sni.c####.q####.####.net/tdata_Soq141
sni.c####.q####.####.net/tdata_vxj811

HTTP POST requests:

and####.b####.qq.com/rqd/async
and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
l####.cc/i/sdk/install
l####.cc/i/sdk/open
l####.tbs.qq.com/ajax?c=####&k=####
sdk.o####.p####.####.com/api.php?format=####&t=####
sensors####.we####.xk####.net:8006/sa?project=####

Modified file system:

Creates the following files:

/data/data/####/1004
/data/data/####/1d2b904cbeadfb72ed9546111a231c85.0
/data/data/####/AndroidTTS.xml
/data/data/####/INSTALLATION
/data/data/####/LKME_Server_Request_Queue.xml
/data/data/####/MultiDex.lock
/data/data/####/bugly_db_-journal
/data/data/####/bugly_db_legu-journal
/data/data/####/com.sensorsdata.analytics.android.sdk.SensorsDataAPI.xml
/data/data/####/com.xkeshi.gift-journal
/data/data/####/config.xml
/data/data/####/core_info
/data/data/####/crashrecord.xml
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/init.pid
/data/data/####/init_base_name.xml
/data/data/####/init_c1.pid
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/libcuid.so
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.1.so
/data/data/####/libufix.so
/data/data/####/linkedme_referral_shared_pref.xml
/data/data/####/local_crash_lock
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/mix.dex
/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/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/sensorsdata.xml
/data/data/####/tbs_download_config.xml
/data/data/####/tbs_download_config.xml.bak
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/tdata_Soq141
/data/data/####/tdata_Soq141.jar
/data/data/####/tdata_vxj811
/data/data/####/tdata_vxj811.jar
/data/data/####/udesk_sdk.xml
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.lm_device_id
/data/media/####/1531846551089.db
/data/media/####/1531846557042.db
/data/media/####/alsn.db
/data/media/####/alsn.db-journal
/data/media/####/app.db
/data/media/####/bd_etts_speech_female.dat
/data/media/####/bd_etts_text.dat
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.xkeshi.gift.bin
/data/media/####/com.xkeshi.gift.db
/data/media/####/tbslog.txt
/data/media/####/tdata_Soq141
/data/media/####/tdata_vxj811
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

/system/bin/sh -c getprop
/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
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.XkeshiPushService 24489 300 0
cat /sys/class/net/eth0/address
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.9.0.1.so
chmod 700 <Package Folder>/tx_shell/libufix.so
getprop
getprop ro.aa.romver
getprop ro.board.platform
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
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.XkeshiPushService 24489 300 0

Loads the following dynamic libraries:

BDSpeechDecoder_V1
BaiduSpeechSDK
Bugly
bd_etts
bdtts
getuiext2
gnustl_shared
libnfix
libshella-2.9.0.1
libufix
nfix
signjni
ufix

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-GCM-NoPadding
RSA-ECB-NoPadding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-GCM-NoPadding
DES-CBC-PKCS5Padding

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.

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