Adware.Gexin.8648

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) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(HTTP/1.1) i.t####.com:80
TCP(HTTP/1.1) www.dayda####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) api.dayda####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) gdv.a.s####.com:80
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) gdv.a.s####.com:443
TCP(TLS/1.0) api.dayda####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) hotfix####.aliy####.com:443
TCP c####.g####.ig####.com:5226
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.man.aliy####.com
api.dayda####.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
f####.dayda####.com
hotfix####.aliy####.com
i.t####.com
pv.s####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
www.dayda####.com

HTTP GET requests:

api.dayda####.com/loan/loanParam?sign=####
api.dayda####.com/product/product/getRecommendProducts?pageNo=####&sign=...
api.dayda####.com/product/productCategory/getHomeCategories?sign=####
api.dayda####.com/user/userStatus?sign=####
api.dayda####.com/user/version/update?version=####&mobileType=####&chann...
gdv.a.s####.com/cityjson?ie=####
i.t####.com/a/309d5a74c34ad4a0713a24fbbe51638c2
t####.c####.q####.####.com/tdata_FhD658
t####.c####.q####.####.com/tdata_kgM272
t####.c####.q####.####.com/tdata_vHH584
ti####.c####.l####.####.com/config/hz-hzv3.conf
www.dayda####.com/xFlowerGuide/css/init.css
www.dayda####.com/xFlowerGuide/css/xguide.css?v=####
www.dayda####.com/xFlowerGuide/img/c-logo.png
www.dayda####.com/xFlowerGuide/img/duihao.png
www.dayda####.com/xFlowerGuide/img/pic_01@2x.png
www.dayda####.com/xFlowerGuide/img/pic_02@2x.png
www.dayda####.com/xFlowerGuide/img/pic_03@2x.png
www.dayda####.com/xFlowerGuide/img/smallBg.png
www.dayda####.com/xFlowerGuide/img/wenan.png
www.dayda####.com/xFlowerGuide/js/cfgLayer.js?v=####
www.dayda####.com/xFlowerGuide/js/flexible.debug.js
www.dayda####.com/xFlowerGuide/js/jquery.min.js
www.dayda####.com/xFlowerGuide/js/md5.js
www.dayda####.com/xFlowerGuide/js/xGuide.js?v=####
www.dayda####.com/xFlowerGuide/layui/css/layui.css
www.dayda####.com/xFlowerGuide/layui/css/modules/layer/default/layer.css...
www.dayda####.com/xFlowerGuide/layui/lay/modules/form.js
www.dayda####.com/xFlowerGuide/layui/lay/modules/layer.js
www.dayda####.com/xFlowerGuide/layui/layui.js
www.dayda####.com/xFlowerGuide/xGuide.html?channelId=####

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####
sh.wagbr####.aliyun####.com/man/api?ak=####&s=####

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1550210964457_2280
/data/data/####/1550210967845_2280
/data/data/####/1550210968197_2280
/data/data/####/1550210968494_2280
/data/data/####/1550210969004_2280
/data/data/####/1550210969495_2280
/data/data/####/1550210969966_2280
/data/data/####/1550210970123_2325
/data/data/####/1550210970645_2280
/data/data/####/1550210971083_2325
/data/data/####/1550210971694_2280
/data/data/####/2150b230421ca19c593090d5312d0c00dc056a301b64477....0.tmp
/data/data/####/2fb6eb39be24ba776e57dbb32a5b081668dd31383376603....0.tmp
/data/data/####/ANCROID_UTIL_CODE.xml
/data/data/####/Alvin2.xml
/data/data/####/Archimedes_p1
/data/data/####/Archimedes_p2
/data/data/####/Archimedes_p3
/data/data/####/Archimedes_p4
/data/data/####/Archimedes_p5
/data/data/####/ContextData.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_cloudcontrol1.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/com.xiaozhoudao.xBeauty_preferences.xml
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/f_000001
/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/####/iv
/data/data/####/journal.tmp
/data/data/####/libjiagu831348808.so
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushk.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/salt
/data/data/####/sp_sophix.xml
/data/data/####/tdata_FhD658
/data/data/####/tdata_FhD658.jar
/data/data/####/tdata_kgM272
/data/data/####/tdata_kgM272.jar
/data/data/####/tdata_vHH584
/data/data/####/tdata_vHH584.jar
/data/data/####/tdid.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/media/####/.tcookieid
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.xiaozhoudao.xBeauty.bin
/data/media/####/com.xiaozhoudao.xBeauty.db
/data/media/####/tdata_FhD658
/data/media/####/tdata_kgM272
/data/media/####/tdata_vHH584
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.services.GeTuiPushServices 25344 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu831348808.so
getprop
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.services.GeTuiPushServices 25344 300 0

Loads the following dynamic libraries:

getuiext2
libjiagu831348808

Uses the following algorithms to encrypt data:

AES
AES-CBC-PKCS5Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

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.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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