Adware.Gexin.626

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) c-h####.g####.com:80
TCP(HTTP/1.1) sh.wagbr####.alibaba####.com:80
TCP(HTTP/1.1) xinsuda####.mifeng####.cn:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(HTTP/1.1) k####.eas####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) t.eas####.com:80
TCP(HTTP/1.1) f####.mifeng####.cn:80
TCP(TLS/1.0) api.map.b####.com:443
TCP(TLS/1.0) api.growi####.com:443
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) o####.map.b####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) loc.map.b####.com:443
TCP(TLS/1.0) adt.x####.com:443
TCP(TLS/1.0) t.growi####.com:443
TCP c####.g####.ig####.com:5227
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
adt.x####.com
and####.b####.qq.com
api.growi####.com
api.map.b####.com
api.ton####.io
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
f####.mifeng####.cn
i.t####.com
k####.eas####.com
loc.map.b####.com
log.u####.com
o####.map.b####.com
s####.u####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
t.eas####.com
t.growi####.com
xinsuda####.mifeng####.cn

HTTP GET requests:

f####.mifeng####.cn/1.gif?plat_version=####&package_name=####&source_id=...
k####.eas####.com/v1/visitors/tenants/20888?sdkVersion=####&appKey=####&...
sh.wagbr####.alibaba####.com/bar/get/579c642ce0f55aeeb1001ebc/?ud_get=####
sni.c####.q####.####.net/config/hz-hzv3.conf
sni.c####.q####.####.net/tdata_Soq141
sni.c####.q####.####.net/tdata_vxj811

HTTP POST requests:

and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####
t.eas####.com/import
xinsuda####.mifeng####.cn/Additional/getCustomerPhone
xinsuda####.mifeng####.cn/Additional/getRollbackMessage
xinsuda####.mifeng####.cn/Bank/getcity
xinsuda####.mifeng####.cn/Config/getAppList
xinsuda####.mifeng####.cn/Message/getUnreadNumber
xinsuda####.mifeng####.cn/Xinsudai/checkUpdate
xinsuda####.mifeng####.cn/Xinsudai/getIndexV2
xinsuda####.mifeng####.cn/Xinsudai/loanAmountAndDataValidation

Modified file system:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1004
/data/data/####/1532566249645_2057
/data/data/####/1532566249712_2057
/data/data/####/1532566249951_2057
/data/data/####/1532566250038_2057
/data/data/####/1532566250575.log
/data/data/####/1532566255579_2057
/data/data/####/1532566256362_2057
/data/data/####/LQ_USER_INFO_DATA.xml
/data/data/####/MultiDex.lock
/data/data/####/TDCloudSettingsConfigBD7BEAB7EF394A55AEC4BFAC6174AAE7.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_longtime1.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/TDpref_shorttime1.xml
/data/data/####/XinSuDai.db
/data/data/####/XinSuDai.db-journal
/data/data/####/analytics-android-cn.mifengkong.twotypeloan.xml
/data/data/####/analytics-android-cn.mifengkong.twotypeloan.xml.bak
/data/data/####/authStatus_cn.mifengkong.twotypeloan;remote.xml
/data/data/####/bugly_db_-journal
/data/data/####/cn.mifengkong.jianrong.tab.xml
/data/data/####/cn.mifengkong.twotypeloan.tmp
/data/data/####/cn.mifengkong.twotypeloan_preferences.xml
/data/data/####/crashrecord.xml
/data/data/####/device_id.xml.xml
/data/data/####/firll.dat
/data/data/####/gal.db
/data/data/####/gal.db-journal
/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/####/hst.db
/data/data/####/hst.db-journal
/data/data/####/httpclient-req--702632771.cache
/data/data/####/httpclient-req--702632771.cache (deleted)
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/kefuinfo.xml
/data/data/####/libcuid.so
/data/data/####/libjiagu-91697244.so
/data/data/####/local_crash_lock
/data/data/####/multidex.version.xml
/data/data/####/not_clear_sp.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/####/security_info
/data/data/####/share_name.xml
/data/data/####/tdata_Soq141
/data/data/####/tdata_Soq141.jar
/data/data/####/tdata_vxj811
/data/data/####/tdata_vxj811.jar
/data/data/####/tdid.xml
/data/data/####/umeng_socialize.xml
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.tcookieid
/data/media/####/app.db
/data/media/####/cn.mifengkong.twotypeloan.bin
/data/media/####/cn.mifengkong.twotypeloan.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/conlts.dat
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/tdata_Soq141
/data/media/####/tdata_vxj811
/data/media/####/test.log
/data/media/####/yoh.dat
/data/media/####/yol.dat
/data/media/####/yom.dat

Miscellaneous:

Executes next shell scripts:

/system/bin/sh -c getprop
/system/bin/sh -c type su
<Package Folder>/files/gdaemon_20161017 0 <Package>/cn.mifengkong.loan.service.GeTuiPushService 25584 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu-91697244.so
getprop
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/cn.mifengkong.loan.service.GeTuiPushService 25584 300 0

Loads the following dynamic libraries:

Bugly
getuiext2
hyphenate
hyphenate_av
hyphenate_av_recorder
libjiagu-91697244
locSDK7b
sqlite

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-GCM-NoPadding
DES-CBC-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 installed applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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