Adware.Gexin.13038

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) si####.huaina####.com:80
TCP(HTTP/1.1) sdk-ope####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) n####.huaina####.com:80
TCP(HTTP/1.1) sdk.o####.amp.####.com:80
TCP(HTTP/1.1) qin####.com.www.####.com:80
TCP(HTTP/1.1) a####.u####.com:80
UDP(NTP) 1.cn.p####.####.org:123
TCP(TLS/1.0) api.growi####.com:443
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) a####.huaina####.com.####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) cdn####.appa####.com:443
TCP(TLS/1.0) experi####.appa####.com:443
TCP(TLS/1.0) t.growi####.com:443
TCP(TLS/1.0) and####.cli####.go####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5227

DNS requests:

1.cn.p####.####.org
7j####.c####.z0.####.com
a####.huaina####.com
a####.u####.com
and####.b####.qq.com
and####.cli####.go####.com
api.growi####.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
cdn####.appa####.com
experi####.appa####.com
i.t####.com
j####.huaina####.com
m.huaina####.com
mt####.go####.com
n####.huaina####.com
pub-####.qin####.com
s####.magicwi####.cn
sdk-ope####.g####.com
sdk.c####.ig####.com
sdk.o####.amp.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
si####.huaina####.com
t.growi####.com

HTTP GET requests:

n####.huaina####.com/promotion_task/info?device_id=####&activate=####&ph...
n####.huaina####.com/serverInfo/info_server?phone_sn=####&version=####&a...
qin####.com.www.####.com/tdata_EDT369
si####.huaina####.com/front_page/list?limit=####&start=####&end=####&fir...
t####.c####.q####.####.com/config/hz-hzv6.conf
t####.c####.q####.####.com/tdata_Soq141
t####.c####.q####.####.com/tdata_fEV688
t####.c####.q####.####.com/tdata_ilz707
t####.c####.q####.####.com/tdata_siA393

HTTP POST requests:

a####.u####.com/app_logs
and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
sdk-ope####.g####.com/api.php?format=####&t=####
sdk-ope####.g####.com/api.php?format=####&t=####&d=####&k=####
sdk.o####.amp.####.com/api.htm?format=####&t=####
si####.huaina####.com/message_box/get?phone_sn=####&version=####&app_cha...

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/1004
/data/data/####/1556670363331_2314
/data/data/####/1556670363664_2314
/data/data/####/1556670364501_2314
/data/data/####/ADHOC_SHARED_PREFERENCE.xml
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/MultiDex.lock
/data/data/####/QALConfigStore.dat
/data/data/####/TDCloudSettingsConfig2BC2A7FE9AA101CCDC4A0D6AC868C17B.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/TLS_DEVICE_INFO.xml
/data/data/####/WLOGIN_DEVICE_INFO.xml
/data/data/####/bugly_db_-journal
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/com.mei.melkor;pushservice.growing.db
/data/data/####/com.mei.melkor;pushservice.growing.db-journal
/data/data/####/com.mei.melkor_preferences.xml
/data/data/####/crashrecord.xml
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/growing.db
/data/data/####/growing.db-journal
/data/data/####/growing_ecsid.xml
/data/data/####/growing_persist_data.xml
/data/data/####/growing_profile.xml
/data/data/####/gx_sp.xml
/data/data/####/increment_cache_file
/data/data/####/index
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jg_so_upgrade_setting.xml
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/libjiagu.so
/data/data/####/local_crash_lock
/data/data/####/multidex.version.xml
/data/data/####/mwsdk_analytics.db-journal
/data/data/####/persistent_data.xml
/data/data/####/pili_qos_index.json
/data/data/####/pili_qos_log.0
/data/data/####/preferences.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushk.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/qalimid_v2
/data/data/####/qos.xml
/data/data/####/report_v5.msgstore-journal
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/tdata_Soq141
/data/data/####/tdata_Soq141.jar
/data/data/####/tdata_fEV688
/data/data/####/tdata_fEV688.jar
/data/data/####/tdata_ilz707
/data/data/####/tdata_ilz707.jar
/data/data/####/tdata_siA393
/data/data/####/tdata_siA393.jar
/data/data/####/tdid.xml
/data/data/####/tls_device.dat
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/data/####/wlogin_device.dat
/data/media/####/.nomedia
/data/media/####/.tcookieid
/data/media/####/ADHOC_CLIENT_APP
/data/media/####/ADHOC_CLIENT_ID
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/app.19.05.01.00.log
/data/media/####/app.db
/data/media/####/c37bb4b2e91f9b97ee3277f39bca9b7418bae487b94610....0.tmp
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.mei.melkor.bin
/data/media/####/com.mei.melkor.db
/data/media/####/journal.tmp
/data/media/####/preferences
/data/media/####/reportStatistic
/data/media/####/sdk.19.05.01.00.log
/data/media/####/tdata_Soq141
/data/media/####/tdata_fEV688
/data/media/####/tdata_ilz707
/data/media/####/tdata_siA393
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

/system/bin/sh -c getprop
/system/bin/sh -c type su
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.push.GetuiPushService 24376 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so
getprop
mount
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.push.GetuiPushService 24376 300 0

Loads the following dynamic libraries:

Bugly
_imcore_group_ext_gyp
_imcore_jni_gyp
_imcore_msg_ext_gyp
_imcore_sns_ext_gyp
getuiext2
gnustl_shared
libjiagu
libwtcrypto
pldroidplayer
qalcodecwrapper
qalmsfboot

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB-NoPadding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding
DES-CBC-PKCS5Padding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
AES-GCM-NoPadding
DES-CBC-PKCS5Padding

Accesses the ITelephony private interface.

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.

Technologies

Terminology

Training and education

Myths

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