Adware.Gexin.19042

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) q####.c####.l####.####.com:80
TCP(HTTP/1.1) o####.map.b####.com:80
TCP(HTTP/1.1) cdn-sdk####.g####.com.####.com:80
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) api.map.b####.com:443
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) fp.fraudme####.cn:443
TCP(TLS/1.0) app.b####.com:443
TCP(TLS/1.0) api.growi####.com:443
TCP(TLS/1.0) t.growi####.com:443
TCP sdk.o####.t####.####.com:5224
TCP cm-1####.ig####.com:5224

DNS requests:

7j####.c####.z0.####.com
api.growi####.com
api.map.b####.com
app.b####.com
c-h####.g####.com
cdn-sdk####.g####.com
cm-1####.ig####.com
cm-1####.ig####.com
fp.fraudme####.cn
loc.map.b####.com
log.u####.com
o####.map.b####.com
s####.u####.com
sdk-ope####.g####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
t.growi####.com

HTTP GET requests:

cdn-sdk####.g####.com.####.com/tdata_EDB102
cdn-sdk####.g####.com.####.com/tdata_cpZ817
cdn-sdk####.g####.com.####.com/tdata_jbc429
cdn-sdk####.g####.com.####.com/tdata_ngI479
q####.c####.l####.####.com/config/hz-hzv6.conf
q####.c####.l####.####.com/tdata_RTc910
sdk.o####.p####.####.com/api/addr.htm

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
loc.map.b####.com/sdk.php
o####.map.b####.com/offline_loc
sdk.o####.p####.####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####&d=####&k=####

File system changes:

Creates the following files:

/data/com.cheok.btxy.card/####/growing.db
/data/data/####/.jg.ic
/data/data/####/.td-3
/data/data/####/.tdck
/data/data/####/1575655106775.log
/data/data/####/1575655106775.log (deleted)
/data/data/####/1575655106775.log.bak
/data/data/####/1575655106775.log.bak (deleted)
/data/data/####/74fcd36e9e07
/data/data/####/authStatus_com.cheok.btxy.card.xml
/data/data/####/authStatus_com.cheok.btxy.card;pushservice.xml
/data/data/####/authStatus_com.cheok.btxy.card;remote.xml
/data/data/####/authStatus_com.cheok.btxy.card;tools.xml
/data/data/####/cheok_main.db
/data/data/####/cheok_main.db-journal
/data/data/####/cheok_main.db-shm
/data/data/####/cheok_main.db-shm (deleted)
/data/data/####/cheok_main.db-wal
/data/data/####/com.btjf.app.commonlib.APP_PREF.xml
/data/data/####/com.cheok.btxy.card;pushservice.growing.db
/data/data/####/com.cheok.btxy.card;pushservice.growing.db-journal
/data/data/####/com.cheok.btxy.card;remote.growing.db
/data/data/####/com.cheok.btxy.card;remote.growing.db-journal
/data/data/####/com.cheok.btxy.card;tools.growing.db-journal
/data/data/####/credit_static.db
/data/data/####/credit_static.db-journal
/data/data/####/credit_static.db-journal (deleted)
/data/data/####/credit_static.db-shm
/data/data/####/credit_static.db-shm (deleted)
/data/data/####/credit_static.db-wal
/data/data/####/dso_deps
/data/data/####/dso_lock
/data/data/####/dso_manifest
/data/data/####/dso_state
/data/data/####/firll.dat
/data/data/####/fm_shared.xml
/data/data/####/gal.db
/data/data/####/gal.db-journal
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gkt-journal
/data/data/####/growing.db
/data/data/####/growing.db-journal
/data/data/####/growing_ecsid.xml
/data/data/####/growing_persist_data.xml
/data/data/####/growing_profile.xml
/data/data/####/gx_sp.xml
/data/data/####/hst.db
/data/data/####/hst.db-journal
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libcuid.so
/data/data/####/libjiagu628899156.so
/data/data/####/multidex.version.xml
/data/data/####/ofl.config
/data/data/####/ofl_location.db
/data/data/####/ofl_location.db-journal
/data/data/####/ofl_statistics.db
/data/data/####/ofl_statistics.db-journal
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/qihoo_jiagu_crash_report.xml
/data/data/####/run.pid
/data/data/####/share_name.xml
/data/data/####/td_fm.jar
/data/data/####/tdata_cpZ817
/data/data/####/tdata_cpZ817.jar
/data/data/####/tdata_jbc429
/data/data/####/tdata_jbc429.jar
/data/data/####/tdata_ngI479
/data/data/####/tdata_ngI479.jar
/data/data/####/umeng_socialize.xml
/data/media/####/.cuid2
/data/media/####/.td-3
/data/media/####/.tdck
/data/media/####/39446415725d31cad335314b522ff003.0.tmp
/data/media/####/39446415725d31cad335314b522ff003.1.tmp
/data/media/####/app.db
/data/media/####/com.cheok.btxy.card.bin
/data/media/####/com.cheok.btxy.card.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/conlts.dat
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/journal
/data/media/####/journal.tmp
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/tdata_cpZ817
/data/media/####/tdata_jbc429
/data/media/####/tdata_ngI479
/data/media/####/test.log
/data/media/####/yoh.dat
/data/media/####/yol.dat
/data/media/####/yom.dat

Miscellaneous:

Executes the following shell scripts:

/system/bin/cat /proc/cpuinfo
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.receiver.GTCustomService 24844 300 0
cat /sys/class/net/wlan0/address
chmod 444/storage/emulated/0/.td-3
chmod 444/storage/emulated/0/.tdck
chmod 444/storage/emulated/0/Alarms/.td-3
chmod 444/storage/emulated/0/Alarms/.tdck
chmod 444/storage/emulated/0/Android/.td-3
chmod 444/storage/emulated/0/Android/.tdck
chmod 444/storage/emulated/0/DCIM/.td-3
chmod 444/storage/emulated/0/DCIM/.tdck
chmod 444/storage/emulated/0/Download/.tdck
chmod 444/storage/emulated/0/Movies/.tdck
chmod 444/storage/emulated/0/Music/.tdck
chmod 444/storage/emulated/0/Notifications/.td-3
chmod 444/storage/emulated/0/Notifications/.tdck
chmod 444/storage/emulated/0/Pictures/.td-3
chmod 444/storage/emulated/0/Pictures/.tdck
chmod 444/storage/emulated/0/Podcasts/.td-3
chmod 444/storage/emulated/0/Podcasts/.tdck
chmod 444/storage/emulated/0/Ringtones/.td-3
chmod 444/storage/emulated/0/Ringtones/.tdck
chmod 444/storage/emulated/0/backups/.tdck
chmod 444/storage/emulated/0/baidu/.td-3
chmod 444/storage/emulated/0/baidu/.tdck
chmod 444/storage/emulated/0/libs/.td-3
chmod 444/storage/emulated/0/libs/.tdck
chmod 444/storage/emulated/0/system/.td-3
chmod 444/storage/emulated/0/system/.tdck
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu628899156.so
getprop net.dns1
ls -l /system/xbin/su
mount
sh
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.receiver.GTCustomService 24844 300 0

Loads the following dynamic libraries:

BaiduMapSDK_base_v4_2_1
getuiext2
libjiagu628899156
libreactnativejni
locSDK7a
tongdun

Uses the following algorithms to encrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-CFB-NoPadding
AES-ECB-PKCS5Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-ECB-PKCS5Padding

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.

Gets information about running apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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