Adware.Gexin.5375

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/1.1) pub-####.qin####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) fp.fraudme####.cn:443
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) cr####.yxj####.com:443
TCP(TLS/1.0) www.yitouz####.com:8184
TCP(TLS/1.0) api.51dat####.com:443
TCP c####.g####.ig####.com:5225
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
api.51dat####.com
c####.g####.ig####.com
c-h####.g####.com
cr####.yxj####.com
fp.fraudme####.cn
l####.tbs.qq.com
plb####.u####.com
pub-####.qin####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
u####.u####.com
www.yitouz####.com

HTTP GET requests:

pub-####.qin####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_bca864
t####.c####.q####.####.com/tdata_fyR930

HTTP POST requests:

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

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/933033415d00
/data/data/####/MultiDex.lock
/data/data/####/a==7.5.3&&2.5.4_1543325003614_envelope.log
/data/data/####/core_info
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI0OTg3ODU4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI0OTk0NDgx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDA2NzE0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDAwMDk1;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDE3MTAx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDExNjY3;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDI3NTQw;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDIxODc2;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDMyMDMx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDQ1NDcx;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDQwMjEy;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDU0Nzc4;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTQzMzI1MDUwMTMz;
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/fm_shared.xml
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/i==1.2.0&&2.5.4_1543324987880_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543324994519_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325000122_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325006766_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325017214_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325021968_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325027616_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325032283_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325040233_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325045554_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325050227_envelope.log
/data/data/####/i==1.2.0&&2.5.4_1543325054861_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu-1581263120.so
/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_name.xml
/data/data/####/share_setting.xml
/data/data/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/td_fm.jar
/data/data/####/tdata_bca864
/data/data/####/tdata_bca864.jar
/data/data/####/tdata_fyR930
/data/data/####/tdata_fyR930.jar
/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_common_location.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.nomedia
/data/media/####/.umm.dat
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.ruimin.phonewallet.bin
/data/media/####/com.ruimin.phonewallet.db
/data/media/####/fmdemo.log
/data/media/####/iFinMobile--20181127132307806.log
/data/media/####/iFinMobile--20181127132314731.log
/data/media/####/iFinMobile--20181127132320628.log
/data/media/####/iFinMobile--20181127132326661.log
/data/media/####/iFinMobile--20181127132331669.log
/data/media/####/iFinMobile--20181127132337267.log
/data/media/####/iFinMobile--20181127132341709.log
/data/media/####/iFinMobile--20181127132347554.log
/data/media/####/iFinMobile--20181127132352019.log
/data/media/####/iFinMobile--20181127132400453.log
/data/media/####/iFinMobile--20181127132405563.log
/data/media/####/iFinMobile--20181127132410150.log
/data/media/####/iFinMobile--20181127132414882.log
/data/media/####/sysid.dat
/data/media/####/tbslog.txt
/data/media/####/tdata_bca864
/data/media/####/tdata_fyR930
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
<Package Folder>/files/gdaemon_20161017 0 <Package>/com.yixin.yitouzi.push.PushService 25258 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
getprop net.dns1
getprop ro.product.cpu.abi
ls -l /system/xbin/su
ls /sys/class/thermal
mount

Loads the following dynamic libraries:

YxjrSecurity
getuiext3
libjiagu-1581263120
tongdun

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
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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