Adware.Gexin.4416

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) l####.tbs.qq.com:80
TCP(HTTP/1.1) a####.exc.mob.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP c####.g####.ig####.com:5224
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
and####.b####.qq.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c####.x####.com
c-h####.g####.com
l####.tbs.qq.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net

HTTP GET requests:

t####.c####.q####.####.com/config/hz-hzv3.conf
t####.c####.q####.####.com/tdata_vHH584
t####.c####.q####.####.com/tdata_wmL809

HTTP POST requests:

a####.exc.mob.com/errconf
and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
l####.tbs.qq.com/ajax?c=####&k=####
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/####/.vpl_lock
/data/data/####/1002
/data/data/####/1004
/data/data/####/1541591228556_2274
/data/data/####/1541591228556_2274 (deleted)
/data/data/####/1541591229226_2274
/data/data/####/1541591229846_2274
/data/data/####/1541591231115_2274
/data/data/####/1541591231784_2274
/data/data/####/1541591232141_2274
/data/data/####/1541591232351_2345
/data/data/####/1541591232755_2345
/data/data/####/1541591233259_2274
/data/data/####/1541591233800_2345
/data/data/####/1541591236488_2274
/data/data/####/1541591238857_2274
/data/data/####/1541591239020_2274
/data/data/####/1541591252433_2274
/data/data/####/1541591252611_2274
/data/data/####/1541591293160_2274
/data/data/####/169456b1b94e1c97c5ead60e303703bf3ccdc9ddb66964b....0.tmp
/data/data/####/182d56216596347cf2b1086bd254faf04ac3691ca20c266....0.tmp
/data/data/####/7c044bc11928cddebad727ef3290bb6f8b157e26065f6e6....0.tmp
/data/data/####/918d379db664a03d6c9f09c69c94361b2aa75ff7df70c22....0.tmp
/data/data/####/Archimedes_p1
/data/data/####/Archimedes_p2
/data/data/####/Archimedes_p3
/data/data/####/Archimedes_p4
/data/data/####/Archimedes_p5
/data/data/####/MultiDex.lock
/data/data/####/TDCloudSettingsConfig1018CA1009BF4D01A32071EA1E1F8E35.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_cloudcontrol1.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/TalingDataConfig1018CA1009BF4D01A32071EA1E1F8E35.xml
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/bugly_db_-journal
/data/data/####/com.Ruiwen.XHShePower.BETA_VALUES.xml
/data/data/####/com.ruiwen.lib.common.preferences.xml
/data/data/####/core_info
/data/data/####/crashrecord.xml
/data/data/####/domain_1
/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/####/iv
/data/data/####/journal.tmp
/data/data/####/libjiagu194460212.so
/data/data/####/local_crash_lock
/data/data/####/mob_commons_1
/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/####/salt
/data/data/####/security_info
/data/data/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/tdata_vHH584
/data/data/####/tdata_vHH584.jar
/data/data/####/tdata_wmL809
/data/data/####/tdata_wmL809.jar
/data/data/####/tdid.xml
/data/media/####/.artc_lock
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.im_lock
/data/media/####/.lesd_lock
/data/media/####/.mn_-1464060969
/data/media/####/.nomedia
/data/media/####/.pkg_lock
/data/media/####/.pkgs_lock
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.ss_lock
/data/media/####/app.db
/data/media/####/com.Ruiwen.XHShePower.bin
/data/media/####/com.Ruiwen.XHShePower.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/tdata_vHH584
/data/media/####/tdata_wmL809
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

/system/bin/sh -c getprop
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.common.push.PushService 25018 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop
getprop ro.product.cpu.abi
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.common.push.PushService 25018 300 0

Loads the following dynamic libraries:

Bugly
getuiext2
libjiagu194460212

Uses the following algorithms to encrypt data:

AES
AES-ECB-PKCS7Padding
AES-GCM-NoPadding
RSA-ECB-NoPadding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES
AES-ECB-NoPadding
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 installed applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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