Adware.Gexin.636

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) www.go####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(TLS/1.0) ssl.gst####.com:443
TCP(TLS/1.0) rb.u####.com:443
TCP(TLS/1.0) a####.u51.com:443
TCP(TLS/1.0) sh.wagbr####.alibaba####.com:443
TCP(TLS/1.0) c####.51zhan####.com:443
TCP(TLS/1.0) www.go####.com:443
TCP(TLS/1.0) www.51zhan####.com:443
TCP(TLS/1.0) www.gst####.com:443
TCP(TLS/1.0) redi####.network####.com:443
TCP(TLS/1.0) dc1.network####.com:443
TCP(TLS/1.0) zhg.ali####.com:443
TCP(TLS/1.0) w####.u51.com:443
TCP(TLS/1.0) www.go####.nl:443
TCP(TLS/1.0) adser####.go####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5226

DNS requests:

7j####.c####.z0.####.com
a####.u51.com
ab.u####.com
adser####.go####.com
c####.51zhan####.com
c####.g####.ig####.com
c-h####.g####.com
dc1.network####.com
loc.map.b####.com
no####.u51.com
plb####.u####.com
rb.u####.com
redi####.network####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
ssl.gst####.com
u####.u####.com
w####.u51.com
www.51zhan####.com
www.go####.com
www.go####.nl
www.gst####.com
y####.al####.com

HTTP GET requests:

sni.c####.q####.####.net/config/hz-hzv3.conf
sni.c####.q####.####.net/tdata_MkX219
sni.c####.q####.####.net/tdata_iGj879
www.go####.com/complete/search?hl=####&client=####&q=####

HTTP POST requests:

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

Modified file system:

Creates the following files:

/data/anr/traces.txt
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/0a231bd8575dcf72.txt
/data/data/####/21c22f492aba3de8.lock
/data/data/####/667b548fb4afabf44fa0863e98d81ba6c28856237188d0e....0.tmp
/data/data/####/930a31b34bd52c08.lock
/data/data/####/AndroidId
/data/data/####/NBSUserAction
/data/data/####/Q0VSVC5SU0EK.txt82c
/data/data/####/SGMANAGER_DATA2.tmp
/data/data/####/UM_PROBE_DATA.xml
/data/data/####/abTestConf.xml
/data/data/####/com.enniu.jiedao_preferences.xml
/data/data/####/com.networkbench.agent.impl.v2_com.enniu.jiedao.xml
/data/data/####/common_log.xml
/data/data/####/dc374f27dd9f7231
/data/data/####/device_info_prefs.xml
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/firll.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/i==1.2.0&&2.2.0_1532595114740_envelope.log
/data/data/####/i==1.2.0&&2.2.0_1532595148508_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jd_comm_file.xml
/data/data/####/journal.tmp
/data/data/####/libcuid.so
/data/data/####/libjiagu268520684.so
/data/data/####/libsgmainso-5.3.38.so.tmp
/data/data/####/libsgsecuritybodyso-5.3.27.so.tmp
/data/data/####/libweexjsb.so
/data/data/####/lock.lock
/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/####/run.pid
/data/data/####/sp.lock
/data/data/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_iGj879
/data/data/####/tdata_iGj879.jar
/data/data/####/u51_hybrid.xml
/data/data/####/u51_superspeed.xml
/data/data/####/u51splashsdk_sp.xml
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_pri.xml
/data/data/####/umdat.xml
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.c0e60eeb
/data/media/####/.cca.dat
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.gzip
/data/media/####/.nomedia
/data/media/####/.umm.dat
/data/media/####/32eb276a-5dc0-40c9-bf70-05277267305b_1532595148653.gzip
/data/media/####/8560a1e8-f9f1-4890-bc0c-870f5a51de49_1532595154320.gzip
/data/media/####/AndroidId
/data/media/####/DeviceId
/data/media/####/app.db
/data/media/####/com.enniu.jiedao.bin
/data/media/####/com.enniu.jiedao.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/conlts.dat
/data/media/####/dd7893586a493dc3
/data/media/####/eab61bc3-6855-4c2f-b926-b0cf2be8545c_1532595114846.gzip
/data/media/####/hid.dat
/data/media/####/jiedaochannel_original
/data/media/####/journal
/data/media/####/journal.tmp
/data/media/####/ller.dat
/data/media/####/log.txt
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/sysid.dat
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.0
/data/media/####/test.log
/data/media/####/time.txt
/data/media/####/tmplog_1532595114846_1532595119143.txt
/data/media/####/tmplog_1532595148653_1532595153276.txt
/data/media/####/tmplog_1532595154320_1532595183276.txt
/data/media/####/yoh.dat
/data/media/####/yol.dat
/data/media/####/yom.dat

Miscellaneous:

Executes next shell scripts:

/system/bin/cat /proc/net/if_inet6
/system/bin/cat /proc/version
/system/bin/cat /sys/class/net/wlan0/address
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
<Package Folder>/files/dc374f27dd9f7231
<Package Folder>/files/gdaemon_20161017 0 <Package>/com.u51.android.push.service.MyGetuiPushService 24574 300 0
app_process /system/bin com.android.commands.pm.Pm list packages -3
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu268520684.so
chmod 777 <Package Folder>/files/dc374f27dd9f7231
getprop
getprop ro.build.version.emui
getprop ro.build.version.opporom
getprop ro.flyme.published
getprop ro.miui.ui.version.name
getprop ro.smartisan.version
getprop ro.vivo.os.version
ls /
ls /sys/class/thermal
ls <SD-Card>/ -l
netcfg
pm list packages -3
ps -eo pcpu,pid
service call iphonesubinfo 1
service call iphonesubinfo 3
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.u51.android.push.service.MyGetuiPushService 24574 300 0
top -s cpu -m 500 -n 1

Loads the following dynamic libraries:

getuiext2
libjiagu268520684
locSDK6a
nbsdc2.1
sgmainso-5.3
sgsecuritybodyso-5.3
weexjsc

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding

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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