Adware.Gexin.14116

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) c-h####.g####.com:80
TCP(HTTP/1.1) sdk-ope####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) pg.x####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) aexcep####.b####.qq.com:8012
TCP(HTTP/1.1) jk.la####.me:8081
TCP(HTTP/1.1) c####.bs.g####.####.com:80
TCP(HTTP/1.1) qin####.com.www.####.com:80
TCP(HTTP/1.1) aexcep####.b####.qq.com:8011
UDP(NTP) 1.cn.p####.####.org:123
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5224

DNS requests:

1.cn.p####.####.org
7j####.c####.z0.####.com
a####.b####.qq.com
aexcep####.b####.qq.com
and####.b####.qq.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
i####.cn
jk.la####.me
pg.x####.com
pub-####.qin####.com
sdk-ope####.g####.com
sdk.c####.ig####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
trac####.m####.p####.com

HTTP GET requests:

jk.la####.me:8081/LaiJieImgServer/upload/images/2016-09-05/2016090517553...
jk.la####.me:8081/LaiJieImgServer/upload/images/2016-12-29/2016122913360...
jk.la####.me:8081/LaiJieImgServer/upload/images/2017-01-10/2017011013185...
jk.la####.me:8081/LaiJieImgServer/upload/images/2017-01-11/2017011112000...
jk.la####.me:8081/LaiJieImgServer/upload/images/2017-03-16/2017031610245...
jk.la####.me:8081/LaiJieImgServer/upload/images/2017-05-10/2017051012300...
jk.la####.me:8081/LaiJieImgServer/upload/images/2018-10-17/2018101716302...
jk.la####.me:8081/LaiJieImgServer/upload/images/2018-10-29/2018102914225...
jk.la####.me:8081/LaiJieImgServer/upload/images/2018-10-29/2018102914234...
qin####.com.www.####.com/tdata_EDT369
t####.c####.q####.####.com/config/hz-hzv6.conf
t####.c####.q####.####.com/tdata_BAI450
t####.c####.q####.####.com/tdata_IcB528
t####.c####.q####.####.com/tdata_Uad612

HTTP POST requests:

aexcep####.b####.qq.com:8011/rqd/async
aexcep####.b####.qq.com:8012/rqd/async
and####.b####.qq.com/rqd/async
c####.bs.g####.####.com/trackingdata/checkapptracking.htm
c-h####.g####.com/api.php?format=####&t=####
jk.la####.me:8081/LaiJieServer/laiJiePlatformNService?method=####
jk.la####.me:8081/LaiJieServer/laiJieSocialNService?method=####
jk.la####.me:8081/LaiJieServer/platformReviewsService?method=####
jk.la####.me:8081/LaiJieServer/platformSearchService?method=####
jk.la####.me:8081/LaiJieServer/xml/UpdateManager.xml
pg.x####.com/api/q/a/3b4fe6c8924f5cf07986aa86e3d33413f
pg.x####.com/api/statis/3b4fe6c8924f5cf07986aa86e3d33413f/app-00C730F690...
sdk-ope####.g####.com/api.php?format=####&t=####
sdk-ope####.g####.com/api.php?format=####&t=####&d=####&k=####

File system changes:

Creates the following files:

/data/data/####/-1760617689947167793
/data/data/####/042504f5d1d59d34899acb3680013b77ed1d57e1be5bb63....0.tmp
/data/data/####/07a626e74c0a99dc1626f1287326636984147da957b0f3a....0.tmp
/data/data/####/0c7815f6f69bf1016266c6cadba670946b3d153a4a108ba....0.tmp
/data/data/####/13ec402a6fb729b4432a55837ece87a362a2abff6694a33....0.tmp
/data/data/####/5fe6f455308a7f90af2c4141d228f975448cb1041e08026....0.tmp
/data/data/####/671cfa8f807cdcd9693861350972165537aa4a1353ac9f4....0.tmp
/data/data/####/7459445ee439476e4645b2000a04cb5a68b437d9ddd61fb....0.tmp
/data/data/####/8f7ca57984d5
/data/data/####/95a71692d521493fdc6b7fa29f16edfdc2738b9bf6e49c3....0.tmp
/data/data/####/TDCloudSettingsConfig00C730F690C3863E25A5B5C7693F5AB9.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDtcagent.db
/data/data/####/TDtcagent.db-journal
/data/data/####/TalingDataConfig00C730F690C3863E25A5B5C7693F5AB9.xml
/data/data/####/a58d16ceb3988f3c817389532a3fd359a09cd2e78ea2f04....0.tmp
/data/data/####/af6b0a9e3524c001f4d1007677837e59e373493cbb11861....0.tmp
/data/data/####/b677fc1ba6587def95112deaffb63da9b3e9d471c76dc23....0.tmp
/data/data/####/bugly_db_legu-journal
/data/data/####/com.jiujiuyun.laijie-1.apk.classes-542266458.zip
/data/data/####/com.jiujiuyun.laijie.ui.fragment.LoanHomeFragment
/data/data/####/com.jiujiuyun.laijie_preferences.xml
/data/data/####/config
/data/data/####/e87e7617216c3913b6fd7a643729dcbf790aa9e499b9bbc....0.tmp
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gkt-journal
/data/data/####/gx_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jiujiuyun_creativelocker.pref.xml
/data/data/####/journal.tmp
/data/data/####/libnfix.so
/data/data/####/libshella-2.10.1.so
/data/data/####/libufix.so
/data/data/####/loan_home_banner
/data/data/####/local_crash_lock
/data/data/####/mix.dex
/data/data/####/multidex.version.xml
/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/####/security_info (deleted)
/data/data/####/talkingdata_app.db-journal
/data/data/####/talkingdata_app_process_preferences_file
/data/data/####/talkingdata_app_version_preferences_file
/data/data/####/td.lock
/data/data/####/tdata_BAI450
/data/data/####/tdata_BAI450.jar
/data/data/####/tdata_IcB528
/data/data/####/tdata_IcB528.jar
/data/data/####/tdata_Uad612
/data/data/####/tdata_Uad612.jar
/data/data/####/tdid.xml
/data/data/####/tdlock.txt
/data/media/####/.tcookieid
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.jiujiuyun.laijie.bin
/data/media/####/com.jiujiuyun.laijie.db
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/tdata_BAI450
/data/media/####/tdata_IcB528
/data/media/####/tdata_Uad612
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

/system/bin/cat /proc/cpuinfo
/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>.ui.service.GeTuiService 25037 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-2.10.1.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
mount
sh
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.ui.service.GeTuiService 25037 300 0

Loads the following dynamic libraries:

Bugly
getuiext2
libnfix
libshella-2.10.1
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

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.).

Gets information about installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

Technologies

Terminology

Training and education

Myths

Technical information

Curing recommendations

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