Adware.Gexin.1858

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-h####.g####.com:80
TCP(HTTP/1.1) m.d####.mob.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) c.d####.mob.com:80
TCP(HTTP/1.1) api.s####.mob.com:80
TCP(HTTP/1.1) www.go####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(TLS/1.0) ssl.gst####.com:443
TCP(TLS/1.0) www.go####.nl:443
TCP(TLS/1.0) www.go####.com:443
TCP(TLS/1.0) adser####.go####.com:443
TCP(TLS/1.0) www.gst####.com:443
TCP(TLS/1.0) api.ben####.com:443
TCP c####.g####.ig####.com:5225
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
adser####.go####.com
api.ben####.com
api.s####.mob.com
c####.g####.ig####.com
c-h####.g####.com
c.d####.mob.com
d####.d####.mob.com
m.d####.mob.com
pub-####.qin####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
ssl.gst####.com
www.go####.com
www.go####.nl
www.gst####.com

HTTP GET requests:

m.d####.mob.com/v4/cconf?appkey=####&plat=####&apppkg=####&appver=####&n...
sni.c####.q####.####.net/config/hz-hzv3.conf
t####.c####.q####.####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_MkX219
t####.c####.q####.####.com/tdata_iGj879
www.go####.com/complete/search?hl=####&client=####&q=####

HTTP POST requests:

a####.exc.mob.com/errconf
a####.exc.mob.com/errlog
api.s####.mob.com/conf5
api.s####.mob.com/conn
api.s####.mob.com/snsconf
c-h####.g####.com/api.php?format=####&t=####
c.d####.mob.com/v3/cdata
d####.d####.mob.com/dinfo
d####.d####.mob.com/dsign
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.duid
/data/data/####/.jg.ic
/data/data/####/.lock
/data/data/####/.mrecord
/data/data/####/.mrlock
/data/data/####/.statistics
/data/data/####/.vpl_lock
/data/data/####/MultiDex.lock
/data/data/####/ThrowalbeLog.db
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/cn_feng_skin_pref.xml
/data/data/####/com.benxiang.antnews_preferences.xml
/data/data/####/da83b6835028
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu-1336619157.so
/data/data/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/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/####/qihoo_jiagu_crash_report.xml
/data/data/####/run.pid
/data/data/####/share_sdk_1
/data/data/####/sharesdk.db
/data/data/####/sharesdk.db-journal
/data/data/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_iGj879
/data/data/####/tdata_iGj879.jar
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/data/media/####/.al
/data/media/####/.artc_lock
/data/media/####/.dh
/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/####/.mps
/data/media/####/.nulal
/data/media/####/.nulplt
/data/media/####/.pkg_lock
/data/media/####/.plst
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/20180828_175523
/data/media/####/20180828_175524
/data/media/####/20180828_175525
/data/media/####/20180828_175612
/data/media/####/20180828_175613
/data/media/####/20180828_175614
/data/media/####/app.db
/data/media/####/com.benxiang.antnews.bin
/data/media/####/com.benxiang.antnews.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.component.push.PushService 25023 300 0
app_process /system/bin com.android.commands.pm.Pm list packages
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu-1336619157.so
grep -E -v root|shell|system
mount
pm list packages
sh
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.component.push.PushService 25023 300 0
top -d 0 -n 1

Loads the following dynamic libraries:

getuiext2
libjiagu-1336619157

Uses the following algorithms to encrypt data:

AES-CBC-PKCS7Padding
AES-ECB-PKCS7Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
AES-ECB-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 installed applications.

Adds tasks to the system scheduler.

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