Adware.Gexin.11726

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) aexcep####.b####.qq.com:8011
TCP(HTTP/1.1) log.r####.com:80
TCP(HTTP/1.1) aexcep####.b####.qq.com:8012
TCP(HTTP/1.1) a.g####.qq.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(TLS/1.0) api.face####.com:443
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) dxp.b####.com:443
TCP(TLS/1.0) sdkj####.oss-cn-####.aliy####.com:443
TCP(TLS/1.0) 1####.217.20.78:443

DNS requests:

a####.b####.qq.com
a.g####.qq.com
aexcep####.b####.qq.com
and####.b####.qq.com
dxp.b####.com
g####.face####.com
log.r####.com
plb####.u####.com
sdkj####.oss-cn-####.aliy####.com
u####.u####.com

HTTP GET requests:

log.r####.com/receive/gettime

HTTP POST requests:

a.g####.qq.com/sdk
aexcep####.b####.qq.com:8011/rqd/async
aexcep####.b####.qq.com:8012/rqd/async
and####.b####.qq.com/rqd/async
log.r####.com/receive/tkio/event
log.r####.com/receive/tkio/install
log.r####.com/receive/tkio/startup

File system changes:

Creates the following files:

/data/data/####/MultiDex.lock
/data/data/####/Reyun.db
/data/data/####/Reyun.db-journal
/data/data/####/__Baidu_Stat_SDK_SendRem.xml
/data/data/####/a==7.5.3&&3.3.7_1554490228556_envelope.log
/data/data/####/bugly_db_legu-journal
/data/data/####/com.crootoon.ked_preferences.xml
/data/data/####/com.facebook.internal.preferences.APP_SETTINGS.xml
/data/data/####/com.facebook.sdk.appEventPreferences.xml
/data/data/####/com.facebook.sdk.attributionTracking.xml
/data/data/####/com.qq.gdt.action.SessionTimePref.xml
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjI3NTUx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjM2OTY4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjMyMjk1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjQ0NzYz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjQ2NDEy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjQ3ODgy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjQwMDUx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjU1NTMz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjU3MTE0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjU4NTE0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjUwMjIy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjUxNjY5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjUzMjQw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjY5MTQ3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjYxNzEy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjYzNTI1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjc2Njk4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjc4MTUz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjc5NTgz;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjcwNTU3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjcyMzQ3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjg1MDk3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjgyMDMw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTU0NDkwMjgzNDkw;
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/i==1.2.0&&3.3.7_1554490227795_envelope.log
/data/data/####/info.xml
/data/data/####/libcuid.so
/data/data/####/libshella-2.9.1.2.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/mix.dex
/data/data/####/multidex.version.xml
/data/data/####/mysp.xml
/data/data/####/native_record_lock
/data/data/####/security_info
/data/data/####/tracking_install.xml
/data/data/####/tracking_interval.xml
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_pri.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/####/.cuid
/data/media/####/.cuid2

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
/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
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.9.1.2.so
chmod 700 <Package Folder>/tx_shell/libufix.so
getprop ro.aa.romver
getprop ro.board.platform
getprop ro.build.display.id
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.smartisan.version
getprop ro.vivo.os.build.display.id
getprop ro.vivo.os.version
getprop ro.yunos.version
logcat -d -v threadtime
ls /sys/class/thermal

Loads the following dynamic libraries:

Bugly
libnfix
libshella-2.9.1.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

AES
AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

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

Accesses the ITelephony private interface.

Uses special library to hide executable bytecode.

Gets information about location.

Gets information about network.

Gets information about phone status (number, IMEI, etc.).

Displays its own windows over windows of other apps.

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