Adware.Gexin.2627

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) c.d####.mob.com:80
TCP(HTTP/1.1) api.s####.mob.com:80
TCP(HTTP/1.1) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) c####.g####.com:80
TCP(HTTP/1.1) d####.d####.mob.com:80
TCP(HTTP/1.1) a####.exc.mob.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) tg####.hel####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) gs.g####.com:80
TCP(HTTP/1.1) m.d####.mob.com:80
TCP(HTTP/1.1) norma-e####.m####.com:80
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) b####.g####.com:80
TCP(HTTP/1.1) ap####.g####.com:80
UDP(NTP) 1.cn.p####.####.org:123
TCP(TLS/1.0) lbs.net####.im:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) wa####.127.net:443
TCP(TLS/1.0) qy-swa####.qi####.com:443
TCP(TLS/1.0) checkan####.hel####.com:443
TCP(TLS/1.0) nim.qi####.com:443
TCP(TLS/1.0) u.zhug####.com:443
TCP(TLS/1.0) i####.hel####.com:443
TCP sdk.o####.t####.####.com:5224
TCP l####.net####.im:8080
TCP c####.g####.ig####.com:5226

DNS requests:

1.cn.p####.####.org
7j####.c####.z0.####.com
a####.exc.mob.com
a####.u####.com
and####.b####.qq.com
ap####.g####.com
api.s####.mob.com
b####.g####.com
b####.g####.com
c####.g####.com
c####.g####.com
c####.g####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
c.d####.mob.com
checkan####.hel####.com
d####.d####.mob.com
gs.g####.com
i####.cn
i####.hel####.com
l####.net####.im
lbs.net####.im
m.d####.mob.com
nim.qi####.com
norma-e####.m####.com
pub-####.qin####.com
qy-swa####.qi####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
tg####.hel####.com
u.zhug####.com
wa####.127.net
wfd.net####.im

HTTP GET requests:

m.d####.mob.com/v4/cconf?appkey=####&plat=####&apppkg=####&appver=####&n...
norma-e####.m####.com/android/exchange/getpublickey.do
t####.c####.q####.####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_NtE098
t####.c####.q####.####.com/tdata_vHH584
t####.c####.q####.####.com/tdata_wmL809
tg####.hel####.com/null2018030715035467da14d3-9b97-4af4-81f0-751c94a1cc5...
tg####.hel####.com/null201808311108255d525f8f-9fe9-4a1e-9034-74467964a46...
tg####.hel####.com/null201808311108408982d911-51d9-4366-9ea7-9fad72227d1...
ti####.c####.l####.####.com/config/hz-hzv3.conf

HTTP POST requests:

a####.exc.mob.com/errconf
a####.u####.com/app_logs
and####.b####.qq.com/rqd/async?aid=####
ap####.g####.com/uploadIdBinding
api.s####.mob.com/conf5
api.s####.mob.com/conn
api.s####.mob.com/log4
api.s####.mob.com/snsconf
b####.g####.com/api.php?format=####&t=####
c####.g####.com/api.php?format=####&t=####
c.d####.mob.com/v3/cdata
d####.d####.mob.com/dgen
d####.d####.mob.com/dinfo
d####.d####.mob.com/dsign
gs.g####.com/encryption/key/fetch
gs.g####.com/geshu/sdkStatistics/bd
gs.g####.com/geshu/sdkStatistics/ubi
norma-e####.m####.com/push/android/external/add.do

Modified file system:

Creates the following files:

/data/data/####/.duid
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/.lock
/data/data/####/.mrecord
/data/data/####/.mrlock
/data/data/####/.statistics
/data/data/####/.vpl_lock
/data/data/####/1004
/data/data/####/1537004585889_2075
/data/data/####/1537004586044_2075
/data/data/####/1537004586272_2075
/data/data/####/1537004588075_2075
/data/data/####/1537004588123_2075
/data/data/####/1537004588248_2075
/data/data/####/1537004593088_2075
/data/data/####/1537004593187_2075
/data/data/####/1537004593242_2075
/data/data/####/1537004593929_2075
/data/data/####/1537004596571_2075
/data/data/####/1537004596916_2075
/data/data/####/1537004596961_2075
/data/data/####/1537004599181_2075
/data/data/####/1537004599282_2075
/data/data/####/1537004599330_2075
/data/data/####/1537004616986_2075
/data/data/####/1537004621589_2075
/data/data/####/1537004621667_2075
/data/data/####/1537004621730_2075
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/NIMSDK_Config_60c987500305ba7e2456f9ec7fc74a7e.xml
/data/data/####/NIMSDK_Config_60c987500305ba7e2456f9ec7fc74a7e_...91.xml
/data/data/####/NIMSDK_Config_df04d9c5e20fa56a8572504ad187e05f.xml
/data/data/####/TDCloudSettingsConfigA37E525D2B4A499E8A0F8B2C8C13C355.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/Unicorn.60c987500305ba7e2456f9ec7fc74a7e.xml
/data/data/####/bugly_db_-journal
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/com.hengtiansoft.tgedu.checkanswer04e62936192e4...94.xml
/data/data/####/com.hengtiansoft.tgedu.checkanswer;core04e62936...94.xml
/data/data/####/com.hengtiansoft.tgedu.checkanswer;pushservice0...94.xml
/data/data/####/com.hengtiansoft.tgedu.checkanswer_preferences.xml
/data/data/####/com.qiyukf.analytics.xml
/data/data/####/com.x.y.1.xml
/data/data/####/com.x.y.2.xml
/data/data/####/crashrecord.xml
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gin.db-journal
/data/data/####/gtc.db-journal
/data/data/####/gx_sp.xml
/data/data/####/ias.db-journal
/data/data/####/ias_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu1180856038.so
/data/data/####/local_crash_lock
/data/data/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/data/data/####/mobclick_agent_user_com.hengtiansoft.tgedu.checkanswer.xml
/data/data/####/msg.db-journal
/data/data/####/multidex.version.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/qiyu_save_60c987500305ba7e2456f9ec7fc74a7e.xml
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/share_sdk_1
/data/data/####/sharesdk.db-journal
/data/data/####/tdata_NtE098.jar
/data/data/####/tdata_NtE0981985434837.tmp
/data/data/####/tdata_vHH584
/data/data/####/tdata_vHH584.jar
/data/data/####/tdata_wmL809
/data/data/####/tdata_wmL809.jar
/data/data/####/tdid.xml
/data/data/####/top_time_0
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_cache_1537004593479.env
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/unicorn#cheese#
/data/data/####/zhuge
/data/data/####/zhuge-journal
/data/media/####/.al
/data/media/####/.artc_lock
/data/media/####/.dh-journal
/data/media/####/.dhlock
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.lecd
/data/media/####/.lesd_lock
/data/media/####/.nomedia
/data/media/####/.nulal
/data/media/####/.nulplt
/data/media/####/.pkg_lock
/data/media/####/.plst
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.tcookieid
/data/media/####/2018-09-15.log.txt
/data/media/####/3c2ff5d5dce4a4e453897c67a8952f6b9c40bc501df2b1....0.tmp
/data/media/####/3f1469781d7a24cc61d40adf7fc4489a4425a2a30ebf80....0.tmp
/data/media/####/41018247336ced0a81b3909aa628ae1388ffd44fb9144b....0.tmp
/data/media/####/4465380987f8e6bfa7dafa2145359a1a5896e7989aa04e....0.tmp
/data/media/####/4c8ae4ede848e71ed7b08c569ebf442ee86488b8f9cabd....0.tmp
/data/media/####/543137004494d25a2fa1dfb936b1043bb7fb0f74a418ff....0.tmp
/data/media/####/6f2782090a454c51bd910b544d5aeb93e5d5e515bac4f5....0.tmp
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/a71cd7527afa31cb4d88d828c2a59807348d248a9ee2ab....0.tmp
/data/media/####/ac2c83cdd0f72c3334a94b32bf8d24fd53e886a76c1497....0.tmp
/data/media/####/app.db
/data/media/####/bb9c05fe56da1c361829274e646b454ac82f439b66d42e....0.tmp
/data/media/####/c2023f97f1d68494c8f292d0fc510f9b5abe728946e8f2....0.tmp
/data/media/####/c9200f1f4a61bff5df62c28a06812171ae1da88da7a005....0.tmp
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.hengtiansoft.tgedu.checkanswer.bin
/data/media/####/com.hengtiansoft.tgedu.checkanswer.db
/data/media/####/com.hengtiansoft.tgedu.checkanswer_.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/d33274b449951948823d0ec8539a7b464a85c0efa085b5....0.tmp
/data/media/####/dc612627fd97c1d02979bb83c5c85097d7cae30cdde906....0.tmp
/data/media/####/e70d8307021084d6aa56c7feb138e571eb42a3a314af14....0.tmp
/data/media/####/ef8df75f54988d61d12775b2dcb9df8a46c951ca263790....0.tmp
/data/media/####/journal.tmp
/data/media/####/log-2018-09-15-1537004588117.log
/data/media/####/log-2018-09-15-1537004588124.log
/data/media/####/nim_sdk.log
/data/media/####/official_config
/data/media/####/tdata_NtE098
/data/media/####/tdata_vHH584
/data/media/####/tdata_wmL809
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

/system/bin/sh -c getprop
/system/bin/sh -c type su
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.push.gtpush.DemoPushService 26450 300 0
app_process /system/bin com.android.commands.pm.Pm list packages
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop
grep -E -v root|shell|system
pm list packages
sh
top -d 0 -n 1

Loads the following dynamic libraries:

Bugly
getuiext2
libjiagu1180856038

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
AES-ECB-NoPadding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding

Uses special library to hide executable bytecode.

Gains access to geolocation.

Gains access to network information.

Gains access to telephone information (number, imei, etc.).

Gains access to information about APN settings.

Gains access to information about installed applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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