Adware.Gexin.1905

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) aexcep####.b####.qq.com:8012
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) commu####.syd.com.cn:80
TCP(HTTP/1.1) a####.exc.mob.com:80
TCP(HTTP/1.1) sz.s####.com.cn:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) show####.syd.com.cn:443
TCP(TLS/1.0) ope####.b####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5227

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
aexcep####.b####.qq.com
and####.b####.qq.com
c####.g####.ig####.com
c-h####.g####.com
commu####.syd.com.cn
ope####.b####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
show####.syd.com.cn
sz.s####.com.cn

HTTP GET requests:

commu####.syd.com.cn/1451/json_list_0.html
commu####.syd.com.cn/1452/json_content_143944.html
commu####.syd.com.cn/1452/json_list_0.html
commu####.syd.com.cn/1453/json_list_0.html
commu####.syd.com.cn/1454/json_list_0.html
commu####.syd.com.cn/2860/json_list_0.html
commu####.syd.com.cn/2862/json_list_0.html
commu####.syd.com.cn/2874/json_list_0.html
commu####.syd.com.cn/2875/json_list_0.html
commu####.syd.com.cn/3121/json_list_0.html
commu####.syd.com.cn/3122/json_list_0.html
commu####.syd.com.cn/3147/json_list_0.html
commu####.syd.com.cn/3179/json_list_0.html
commu####.syd.com.cn/3208/json_list_0.html
commu####.syd.com.cn/3262/json_list_0.html
commu####.syd.com.cn/3263/json_list_0.html
commu####.syd.com.cn/Template/1450/global/syfinger_app_newest.html
commu####.syd.com.cn/Template/1450/global/sync_article_property.html
commu####.syd.com.cn/attachment/1450/jpg/2018/08/21/15550161858_11589242...
commu####.syd.com.cn/attachment/1450/jpg/2018/08/21/16302904819_10368239...
commu####.syd.com.cn/attachment/1450/jpg/2018/08/28/07392409903_15050240...
commu####.syd.com.cn/attachment/1450/jpg/2018/08/28/08294702694_14526667...
commu####.syd.com.cn/attachment/1450/jpg/2018/08/28/09123267325_68365550...
commu####.syd.com.cn/attachment/1450/jpg/2018/08/29/18354495006_13883605...
commu####.syd.com.cn/attachment/1450/png/2018/08/28/13354179642_19483010...
commu####.syd.com.cn/json_list_0.html
sz.s####.com.cn/1453/json_content_143935.html
sz.s####.com.cn/1453/json_content_144053.html
sz.s####.com.cn/Template/1450/global/contenth5.css
sz.s####.com.cn/Template/1450/global/jquery-1.7.1.min.js
sz.s####.com.cn/Template/1450/global/ncommon.css
sz.s####.com.cn/comment/comment_json.aspx?page=####&ID=####
sz.s####.com.cn/plugin/mediaelement/build/jquery.js
sz.s####.com.cn/plugin/mediaelement/build/mediaelement-and-player.js
sz.s####.com.cn/plugin/mediaelement/build/mediaelementplayer.css
t####.c####.q####.####.com/tdata_Soq141
t####.c####.q####.####.com/tdata_vxj811

HTTP POST requests:

a####.exc.mob.com/errconf
aexcep####.b####.qq.com:8012/rqd/async
and####.b####.qq.com/rqd/async
c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.duid
/data/data/####/.lock
/data/data/####/.vpl_lock
/data/data/####/287213d33195f31bd97eb6db71e6a85efcebf2b24223e45....0.tmp
/data/data/####/5db674a6a4aa23d86cb2cc1581bb639103171cd3e01d6dd....0.tmp
/data/data/####/87788f18065fc24af873fac6d40a001910445eefdfd5bfc....0.tmp
/data/data/####/AndroidTTS.xml
/data/data/####/SydChannel
/data/data/####/SydDataBase.db
/data/data/####/SydDataBase.db-journal
/data/data/####/SydDistrict
/data/data/####/SydNewsContent143935
/data/data/####/SydNewsContent143944
/data/data/####/SydNewsContent144053
/data/data/####/SydNewsList1451_0
/data/data/####/SydNewsList1452_0
/data/data/####/SydNewsList1453_0
/data/data/####/SydNewsList1454_0
/data/data/####/SydNewsList2860_0
/data/data/####/SydNewsList2862_0
/data/data/####/SydNewsList2874_0
/data/data/####/SydNewsList2875_0
/data/data/####/SydNewsList3121_0
/data/data/####/SydNewsList3122_0
/data/data/####/SydNewsList3147_0
/data/data/####/SydNewsList3179_0
/data/data/####/SydNewsList3208_0
/data/data/####/SydNewsList3262_0
/data/data/####/SydNewsList3263_0
/data/data/####/SydPropertyValue
/data/data/####/SydProvince
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/acd66d844ee191fa7ef3890caa92c37d7ab76cef15f488d....0.tmp
/data/data/####/bugly_db_legu-journal
/data/data/####/d0e1982b797c6c313a9a5fa64b79c4cf9cb84e36fc99ff6....0.tmp
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/eb9faed59b5a9b3bef99c245f829ce20373cdeb7cb390c8....0.tmp
/data/data/####/f_000001
/data/data/####/f_000002
/data/data/####/f_000003
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/index
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/journal.tmp
/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/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/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_Soq141
/data/data/####/tdata_Soq141.jar
/data/data/####/tdata_vxj811
/data/data/####/tdata_vxj811.jar
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/media/####/.artc_lock
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.im_lock
/data/media/####/.lecd
/data/media/####/.lesd_lock
/data/media/####/.mn_-1464060969
/data/media/####/.pkg_lock
/data/media/####/.pkgs_lock
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.ss_lock
/data/media/####/app.db
/data/media/####/bd_etts_common_speech_m15_mand_eng_high_am-mix...05.dat
/data/media/####/bd_etts_text.dat
/data/media/####/cn.com.syd.shenyangfinger.bin
/data/media/####/cn.com.syd.shenyangfinger.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/tdata_Soq141
/data/media/####/tdata_vxj811
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

/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.DemoPushService 25498 300 0
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-2.9.0.2.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:

BDSpeechDecoder_V1
Bugly
bd_etts
bdtts
getuiext2
gnustl_shared
libnfix
libshella-2.9.0.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-ECB-NoPadding
AES-GCM-NoPadding

Uses special library to hide executable bytecode.

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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