Adware.Gexin.5372

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) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) c####.g####.com:80
TCP(HTTP/1.1) gs.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) 2####.107.1.1:80
TCP(TLS/1.0) 2####.107.1.97:443
TCP(TLS/1.0) wap.cm####.com:443
TCP(TLS/1.0) 1####.3.146.133:443
TCP c####.g####.ig####.com:5227
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.man.aliy####.com
a####.u####.com
and####.b####.qq.com
b####.g####.com
c####.g####.com
c####.g####.ig####.com
c-h####.g####.com
gs.g####.com
mt####.go####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
wap.cm####.com

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####.u####.com/app_logs
and####.b####.qq.com/rqd/async?aid=####
c####.g####.com/api.php?format=####&t=####
gs.g####.com/encryption/key/fetch
gs.g####.com/geshu/sdkStatistics/bindInfo
gs.g####.com/geshu/sdkStatistics/uploadBI
sdk.o####.p####.####.com/api.php?format=####&t=####
sh.wagbr####.aliyun####.com/man/api?ak=####&s=####

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/1004
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/Cookies250026699187743.xml
/data/data/####/MultiDex.lock
/data/data/####/aliclound_httpdns.db
/data/data/####/aliclound_httpdns.db-journal
/data/data/####/bugly_db_-journal
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/com.ishugui_dna.xml
/data/data/####/com.ishugui_preferences.xml
/data/data/####/com.ishugui_prefs.xml
/data/data/####/crashrecord.xml
/data/data/####/du.lock
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gtc.db-journal
/data/data/####/gx_sp.xml
/data/data/####/httpdns_config_cache.xml
/data/data/####/ias.db-journal
/data/data/####/ias_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/ishugui.db-journal
/data/data/####/ishugui.shareInfo.xml
/data/data/####/ishugui.shareInfo.xml.bak (deleted)
/data/data/####/libjiagu-1759091415.so
/data/data/####/local_crash_lock
/data/data/####/msp.db
/data/data/####/msp.db-journal
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/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/####/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_general_config.xml.bak
/data/data/####/umeng_it.cache
/data/data/####/webview.db-journal
/data/media/####/._android.dat
/data/media/####/._system.dat
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/_android.dat
/data/media/####/_system.dat
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.ishugui.bin
/data/media/####/com.ishugui.db
/data/media/####/com.ishugui_.db
/data/media/####/factory.dzt
/data/media/####/payerr.txt
/data/media/####/tdata_YYn966
/data/media/####/tdata_eOt091
/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>/com.dzbook.service.GetTuiPushService 24131 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu-1759091415.so
date
df
getprop
id
ip link
ls /dev/socket
ls /system/fonts
mkdir -p <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/
ps
service call iphonesubinfo 1
sh -c cat /proc/meminfo
sh -c cat /sys/class/net/eth0/address
sh -c cd /proc/;cat cpuinfo
sh -c cd /proc/net/ && cat arp
sh -c echo M0JCMUZDREM3NThENzEwRDM1NDE4M0I1MkM5RjM3MDk3RjkzOEE6RjU0MzgxOjdCQzk2Qw== > <SD-Card>/../../../../../..<SD-Card>/._android.dat
sh -c echo M0JCMUZDREM3NThENzEwRDM1NDE4M0I1MkM5RjM3MDk3RjkzOEE6RjU0MzgxOjdCQzk2Qw== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_android.dat
sh -c echo QjU4NUVFQTBCMEQ3MkI1Mzg5QjM5ODQ1MzQ1NUNFMDMzQzdBQjU6ODg2Qzc4OjI3RERDMw== > <SD-Card>/../../../../../..<SD-Card>/._system.dat
sh -c echo QjU4NUVFQTBCMEQ3MkI1Mzg5QjM5ODQ1MzQ1NUNFMDMzQzdBQjU6ODg2Qzc4OjI3RERDMw== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_system.dat

Loads the following dynamic libraries:

Bugly
du
getuiext2
libjiagu-1759091415

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding

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 APN settings.

Gets information about installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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