Adware.Gexin.5903

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.0) tcms-a####.wan####.ta####.com:443
TCP(HTTP/1.0) tcms-a####.wan####.ta####.com:80
TCP(HTTP/1.1) pub-####.qin####.com:80
TCP(HTTP/1.1) c####.g####.com:80
TCP(HTTP/1.1) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) b####.g####.com:80
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) gs.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) res####.a####.com:443
TCP c####.g####.ig####.com:5225
TCP sdk.o####.t####.####.com:5224
TCP i####.wan####.ta####.com:443

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
b####.g####.com
c####.g####.com
c####.g####.com
c####.g####.ig####.com
c-h####.g####.com
gs.g####.com
hotp####.wan####.ta####.com
i####.wan####.ta####.com
l####.tbs.qq.com
pub-####.qin####.com
res####.a####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
tcms-a####.wan####.ta####.com

HTTP GET requests:

pub-####.qin####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_bca864
t####.c####.q####.####.com/tdata_fyR930
tcms-a####.wan####.ta####.com:443/imlogingw/tcp60login?devid=####&ver=####
ti####.c####.l####.####.com/config/hz-hzv3.conf

HTTP POST requests:

a####.exc.mob.com/errconf
b####.g####.com/api.php?format=####&t=####
c####.g####.com/api.php?format=####&t=####
gs.g####.com/encryption/key/fetch
gs.g####.com/geshu/sdkStatistics/bd
gs.g####.com/geshu/sdkStatistics/ubi
l####.tbs.qq.com/ajax?c=####&k=####
sdk.o####.p####.####.com/api.php?format=####&t=####

File system changes:

Creates the following files:

/data/data/####/.duid
/data/data/####/.jg.ic
/data/data/####/.lock
/data/data/####/.vpl_lock
/data/data/####/12-04_20_55_com.dream.yirenbang_2287
/data/data/####/12-04_20_55_com.dream.yirenbang_TcmsService_2318
/data/data/####/12-04_20_55_com.dream.yirenbang_pushservice_2367
/data/data/####/1d2b904cbeadfb72ed9546111a231c85.0
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/com.dream.yirenbang_preferences.xml
/data/data/####/core_info
/data/data/####/domain_1
/data/data/####/gdaemon_20161017
/data/data/####/gtc.db-journal
/data/data/####/gx_sp.xml
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/ias.db-journal
/data/data/####/ias_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/k.store
/data/data/####/libjiagu740461749.so
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/data/data/####/msp.db
/data/data/####/msp.db-journal
/data/data/####/notification_config.xml
/data/data/####/pref.xml
/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/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/tcms_istied.xml
/data/data/####/tcms_setting_sp.xml
/data/data/####/tdata_bca864
/data/data/####/tdata_bca864.jar
/data/data/####/tdata_fyR930
/data/data/####/tdata_fyR930.jar
/data/data/####/user_share_prefs.xml
/data/data/####/xpush_status.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/####/1543956911331.db
/data/media/####/2_20181204_r
/data/media/####/alsn20170807.db
/data/media/####/alsn20170807.db-journal
/data/media/####/app.db
/data/media/####/com.dream.yirenbang.db
/data/media/####/com.dream.yirenbang_.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/tdata_bca864
/data/media/####/tdata_fyR930
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/com.igexin.sdk.PushService 24891 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop ro.product.cpu.abi
mount
sh

Loads the following dynamic libraries:

getuiext3
inet.2.0
libjiagu740461749

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

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

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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