Adware.Gexin.6376

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) c####.g####.com:80
TCP(HTTP/1.1) b####.g####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) pin####.qq.com:80
TCP(HTTP/1.1) gs.g####.com:80
TCP(HTTP/1.1) pi####.qq.com:80
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) dxp.b####.com:443
TCP(TLS/1.0) h####.b####.com:443
TCP(TLS/1.0) wap.cmpass####.com:8443
TCP(TLS/1.0) zhiyao1####.oss-cn-####.aliy####.com:443

DNS requests:

and####.b####.qq.com
b####.g####.com
c####.g####.com
c####.g####.com
dxp.b####.com
gs.g####.com
h####.b####.com
log.u####.com
pi####.qq.com
pin####.qq.com
plb####.u####.com
u####.u####.com
wap.cmpass####.com
zhiyao1####.oss-cn-####.aliy####.com

HTTP POST requests:

and####.b####.qq.com/rqd/async
b####.g####.com/api.php?format=####&t=####
c####.g####.com/api.php?format=####&t=####
gs.g####.com/encryption/key/fetch
gs.g####.com/geshu/sdkStatistics/bd
gs.g####.com/geshu/sdkStatistics/ubi
pi####.qq.com/mstat/report/?index=####
pin####.qq.com/request

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/1004
/data/data/####/MultiDex.lock
/data/data/####/__Baidu_Stat_SDK_SendRem.xml
/data/data/####/__local_ap_info_cache.json
/data/data/####/__local_last_session.json
/data/data/####/__local_stat_cache.json
/data/data/####/__send_data_1544467425458
/data/data/####/__send_data_1544467432252
/data/data/####/__send_data_1544467439763
/data/data/####/__send_data_1544467447453
/data/data/####/__send_data_1544467454341
/data/data/####/__send_data_1544467461513
/data/data/####/__send_data_1544467469181
/data/data/####/__send_data_1544467477702
/data/data/####/a==7.5.0&&2.2.7_1544467421701_envelope.log
/data/data/####/baidu_mtj_sdk_record.xml
/data/data/####/bugly_db_-journal
/data/data/####/bugly_db_legu-journal
/data/data/####/com.guya.yddrug.mid.world.ro.xml
/data/data/####/com.guya.yddrug_preferences.xml
/data/data/####/crashrecord.xml
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDE5NzU0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDI2NzUx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDM0NTMw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDQ4ODE0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDQxNzg0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDU2MDA5;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDYzOTQ2;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDcyMjc0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQ0NDY3NDg0ODEz;
/data/data/####/dW1weF9zaGFyZV8xNTQ0NDY3NDIyMTY5;
/data/data/####/dW1weF9zaGFyZV8xNTQ0NDY3NDIyMjIy;
/data/data/####/dso_deps
/data/data/####/dso_lock
/data/data/####/dso_manifest
/data/data/####/dso_state
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gtc.db-journal
/data/data/####/i==1.2.0&&2.2.7_1544467419799_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467426797_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467434571_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467441814_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467448862_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467456046_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467463962_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467472301_envelope.log
/data/data/####/i==1.2.0&&2.2.7_1544467484866_envelope.log
/data/data/####/ias.db-journal
/data/data/####/ias_sp.xml
/data/data/####/ias_sp.xml.bak (deleted)
/data/data/####/info.xml
/data/data/####/legu_tencent_analysis.db_com.guya.yddrug-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/####/mix.dex
/data/data/####/mtj_autoTracker.js
/data/data/####/mudao_store.xml
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/data/data/####/pri_legu_tencent_analysis.db_com.guya.yddrug-journal
/data/data/####/security_info
/data/data/####/share.db-journal
/data/data/####/trace_circle.data
/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_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/umeng_socialize.xml
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.mid.txt
/data/media/####/.mid.txt1000001
/data/media/####/.umm.dat
/data/media/####/com.guya.yddrug_.db
/data/media/####/sysid.dat

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
/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-2.9.0.2.so
chmod 700 <Package Folder>/tx_shell/libufix.so
getprop
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
MtaNativeCrash
j2v8
libnfix
libshella-2.9.0.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB-NoPadding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding
RSA-NONE-PKCS1PADDING

Uses the following algorithms to decrypt data:

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

Uses special library to hide executable bytecode.

Gets information about location.

Gets information about network.

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

Gets information about installed apps.

Displays its own windows over windows of other apps.

Technologies

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