Adware.Gexin.2015

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) a####.u####.com:80
TCP(HTTP/1.1) up####.sdk.jig####.cn:80
TCP(HTTP/1.1) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) a####.exc.mob.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) api.s####.mob.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) ssw.g####.com.cn:443
TCP(TLS/1.0) s####.j####.cn:443
TCP c####.g####.ig####.com:5227
TCP sdk.o####.t####.####.com:5224
TCP 1####.229.215.19:7003
UDP s.j####.cn:19000

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
a####.u####.com
api.s####.mob.com
c####.g####.ig####.com
c-h####.g####.com
loc.map.b####.com
s####.j####.cn
s.j####.cn
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
sis.j####.io
ssw.g####.com.cn
up####.sdk.jig####.cn

HTTP GET requests:

t####.c####.q####.####.com/tdata_YYn966
t####.c####.q####.####.com/tdata_eOt091
ti####.c####.l####.####.com/config/hz-hzv3.conf

HTTP POST requests:

a####.exc.mob.com/errconf
a####.exc.mob.com/errlog
a####.u####.com/app_logs
api.s####.mob.com/conf4
api.s####.mob.com/conn
api.s####.mob.com/data2
api.s####.mob.com/log4
api.s####.mob.com/snsconf
c-h####.g####.com/api.php?format=####&t=####
loc.map.b####.com/offline_loc
loc.map.b####.com/sdk.php
sdk.o####.p####.####.com/api.php?format=####&t=####
up####.sdk.jig####.cn/v1/push/sdk/postlist

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/126f9e15b5f09c1a631ce8a2f9ebaf91.0.tmp
/data/data/####/7e1d4d26703f32af947bc8306946f47d.0.tmp
/data/data/####/JPushSA_Config.xml
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/appPackageNames
/data/data/####/bcd1a2ac785fe40121e510a032e8d1f7.0.tmp
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/cn.com.gxrb.client.db-journal
/data/data/####/cn.jpush.android.user.profile.xml
/data/data/####/cn.jpush.preferences.v2.rid.xml
/data/data/####/cn.jpush.preferences.v2.xml
/data/data/####/device_id.xml.xml
/data/data/####/e1468823ef103c93ca49430858ca2860.0.tmp
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/firll.dat
/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/####/journal.tmp
/data/data/####/jpush_device_info.xml
/data/data/####/jpush_stat_cache.json
/data/data/####/jpush_stat_cache_history.json
/data/data/####/jpush_statistics.db
/data/data/####/jpush_statistics.db-journal
/data/data/####/jpush_statistics.db-shm (deleted)
/data/data/####/jpush_statistics.db-wal
/data/data/####/libcuid.so
/data/data/####/libjiagu.so
/data/data/####/mob_sdk_exception_1.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/####/rb_system_store_shared.xml
/data/data/####/run.pid
/data/data/####/share_sdk_1.xml
/data/data/####/sharesdk.db-journal
/data/data/####/tdata_YYn966
/data/data/####/tdata_YYn966.jar
/data/data/####/tdata_eOt091
/data/data/####/tdata_eOt091.jar
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/media/####/.ba
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.dk
/data/media/####/.lock
/data/media/####/.push_deviceid
/data/media/####/app.db
/data/media/####/cn.com.gxrb.client.bin
/data/media/####/cn.com.gxrb.client.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/conlts.dat
/data/media/####/gxrb.apk
/data/media/####/ller.dat
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/tdata_YYn966
/data/media/####/tdata_eOt091
/data/media/####/test.0
/data/media/####/test.log
/data/media/####/text_bottom_dl80c20180424.jpg
/data/media/####/yoh.dat
/data/media/####/yol.dat
/data/media/####/yom.dat

Miscellaneous:

Executes next shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.push.getui.IGeXinPushService 24740 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so

Loads the following dynamic libraries:

getuiext2
jcore116
libjiagu
locSDK6a
neh

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-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.

Gains access to information about running applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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