Adware.Gexin.6905

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) a####.exc.mob.com:80
TCP(HTTP/1.1) www.gancao####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) pin####.qq.com:80
TCP(HTTP/1.1) pi####.qq.com:80
TCP(TLS/1.0) res####.a####.com:443

DNS requests:

a####.exc.mob.com
and####.b####.qq.com
mt####.go####.com
pi####.qq.com
pin####.qq.com
res####.a####.com
www.gancao####.com

HTTP POST requests:

a####.exc.mob.com/errconf
and####.b####.qq.com/rqd/async
pi####.qq.com/mstat/report/?index=####
pin####.qq.com/request
www.gancao####.com/medicalDoctorApi/110
www.gancao####.com/medicalDoctorApi/1900
www.gancao####.com/medicalDoctorApi/50
www.gancao####.com/medicalDoctorApi/74

File system changes:

Creates the following files:

/data/anr/traces.txt
/data/data/####/.duid
/data/data/####/.lock
/data/data/####/.vpl_lock
/data/data/####/1d2b904cbeadfb72ed9546111a231c85.0
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/bugly_db_legu-journal
/data/data/####/c0586a10777146560765a69231d89beb.xml
/data/data/####/com.shile.gancaoyuan.doctor.mid.world.ro.xml
/data/data/####/com.shile.gancaoyuan.doctor_preferences.xml
/data/data/####/domain_1
/data/data/####/dso_deps
/data/data/####/dso_lock
/data/data/####/dso_manifest
/data/data/####/dso_state
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/k.store
/data/data/####/legu_tencent_analysis.db_com.shile.gancaoyuan.d...ournal
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/mix.dex
/data/data/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/data/data/####/native_record_lock
/data/data/####/pref.xml
/data/data/####/pri_legu_tencent_analysis.db_com.shile.gancaoyu...ournal
/data/data/####/security_info
/data/media/####/.artc_lock
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.im_lock
/data/media/####/.lesd_lock
/data/media/####/.mid.txt
/data/media/####/.mid.txt1000001
/data/media/####/.mn_-1464060969
/data/media/####/.nomedia
/data/media/####/.pkg_lock
/data/media/####/.pkgs_lock
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.ss_lock
/data/media/####/1545493578902.db
/data/media/####/1545493592970.db
/data/media/####/1545493614086.db
/data/media/####/1545493635773.db
/data/media/####/alsn20170807.db
/data/media/####/alsn20170807.db-journal
/data/media/####/crash-2018-12-22-15-46-20-1545493580381.log
/data/media/####/crash-2018-12-22-15-46-23-1545493583803.log
/data/media/####/crash-2018-12-22-15-46-26-1545493586762.log
/data/media/####/crash-2018-12-22-15-46-34-1545493594379.log
/data/media/####/crash-2018-12-22-15-46-38-1545493598409.log
/data/media/####/crash-2018-12-22-15-46-41-1545493601134.log
/data/media/####/crash-2018-12-22-15-46-55-1545493615873.log
/data/media/####/crash-2018-12-22-15-47-02-1545493622203.log
/data/media/####/crash-2018-12-22-15-47-04-1545493624083.log
/data/media/####/crash-2018-12-22-15-47-17-1545493637320.log
/data/media/####/crash-2018-12-22-15-47-20-1545493640655.log
/data/media/####/crash-2018-12-22-15-47-23-1545493643984.log
/data/media/####/journal
/data/media/####/journal.tmp

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
cat /sys/class/net/wlan0/address
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 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

Loads the following dynamic libraries:

Bugly
MtaNativeCrash
libnfix
libshella-2.9.0.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CFB-NoPadding
AES-ECB-NoPadding
AES-GCM-NoPadding

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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