Adware.Gexin.4442

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) norma-e####.m####.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) sdk.o####.p####.####.com:80
TCP(TLS/1.0) api.map.b####.com:443
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) s####.j####.cn:443
TCP(TLS/1.0) aus-h####.huiyi####.com:443
TCP(TLS/1.0) gd-s####.j####.cn:443
TCP(TLS/1.0) t####.j####.cn:443
TCP c####.g####.ig####.com:5227
TCP 1####.202.138.13:7002
TCP sdk.o####.t####.####.com:5224
UDP s.j####.cn:19000

DNS requests:

7j####.c####.z0.####.com
and####.b####.qq.com
api.map.b####.com
aus-h####.huiyi####.com
c####.g####.ig####.com
c-h####.g####.com
gd-s####.j####.cn
norma-e####.m####.com
plb####.u####.com
pub-####.qin####.com
s####.j####.cn
s.j####.cn
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
t####.j####.cn
u####.u####.com
u####.umengc####.com

HTTP GET requests:

norma-e####.m####.com/android/exchange/getpublickey.do
pub-####.qin####.com/tdata_EDT356
t####.c####.q####.####.com/config/hz-hzv3.conf
t####.c####.q####.####.com/tdata_bca864
t####.c####.q####.####.com/tdata_fyR930

HTTP POST requests:

and####.b####.qq.com/rqd/async
and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
norma-e####.m####.com/push/android/external/add.do
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/0f23f8e79773
/data/data/####/1004
/data/data/####/2ee46ce8-badc-4c1c-ba08-e211a2701e24
/data/data/####/3fbda943-67c0-4a56-8f84-3bd08d1c3158
/data/data/####/626171ca-f229-4be9-92f7-e21acc2cc026
/data/data/####/92100991-546a-4b09-b776-e6da5fcc1dc0
/data/data/####/Alvin2.xml
/data/data/####/AndroidTTS.xml
/data/data/####/ContextData.xml
/data/data/####/DeviceInfo.xml
/data/data/####/JPushSA_Config.xml
/data/data/####/MultiDex.lock
/data/data/####/SharedPreferences.xml
/data/data/####/a==7.5.3&&3.01.004_1541599323157_envelope.log
/data/data/####/appPackageNames_v2
/data/data/####/authStatus_com.huiyinxun.wallet.laijc.xml
/data/data/####/ba80d874-f7a6-46d9-aa0f-7509acc5c981
/data/data/####/bugly_db_-journal
/data/data/####/bugly_db_legu-journal
/data/data/####/cn.jpush.android.user.profile.xml
/data/data/####/cn.jpush.preferences.v2.rid.xml
/data/data/####/cn.jpush.preferences.v2.xml
/data/data/####/cn_jiguang_sharedbWechat_587268097.xml
/data/data/####/com.x.y.1.xml
/data/data/####/com.x.y.2.xml
/data/data/####/crashrecord.xml
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzE3NjAw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzI1NDQy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzI4NzU4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzIxODg2;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzM0Nzkx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzM2Mjcz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzM3Nzgz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzMwMjg1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzQ0MTg3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzQ1OTUy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzQ3MzMw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzQ5NDA1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzQxODE0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzU1OTQy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzU3MzU3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzUxMDg5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzUyNzQ3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzY2NjE3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzY4MjUx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzY5OTQw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5Mzc0MzQ0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5Mzc2MDA2;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5Mzc3NTI4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQxNTk5MzgyNTkx;
/data/data/####/e3b74269-896d-48eb-9947-993f7a8dfcd3
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/fc0e565b-74ff-4466-b0c9-b45e31990f10
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/i==1.2.0&&3.01.004_1541599317648_envelope.log
/data/data/####/i==1.2.0&&3.01.004_1541599334801_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jpush_device_info.xml
/data/data/####/jpush_stat_cache.json
/data/data/####/jpush_stat_cache_history.json
/data/data/####/laijucai
/data/data/####/laijucai-journal
/data/data/####/libcuid.so
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/local_crash_lock (deleted)
/data/data/####/mix.dex
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/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/####/tdata_bca864
/data/data/####/tdata_bca864.jar
/data/data/####/tdata_fyR930
/data/data/####/tdata_fyR930.jar
/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_it.cache
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.push_deviceid
/data/media/####/.umm.dat
/data/media/####/2018-11-07.log.txt
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/app.db
/data/media/####/bd_etts_common_speech_f7_mand_eng_high_am-mix_...12.dat
/data/media/####/bd_etts_text.dat
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.huiyinxun.wallet.laijc.bin
/data/media/####/com.huiyinxun.wallet.laijc.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/sysid.dat
/data/media/####/tdata_bca864
/data/media/####/tdata_fyR930
/data/media/####/test.log

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
/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.MyPushService 25630 300 0
cat /sys/class/net/wlan0/address
chmod 700 /data/user/0/<Package>/tx_shell/libnfix.so
chmod 700 /data/user/0/<Package>/tx_shell/libshella-2.9.0.2.so
chmod 700 /data/user/0/<Package>/tx_shell/libufix.so
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.9.0.2.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.vivo.os.build.display.id
getprop ro.yunos.version
logcat -d -v threadtime
ls /sys/class/thermal
mount
ps

Loads the following dynamic libraries:

BDSpeechDecoder_V1
BaiduMapSDK_base_v5_2_0
Bugly
bd_etts
bdtts
getuiext3
gnustl_shared
jcore125
libnfix
libshella-2.9.0.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS7Padding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-NoPadding
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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