Adware.Gexin.9813

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) a####.u####.com:80
TCP(HTTP/1.1) qin####.com.www.####.com:80
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) app.ish####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) c####.g####.com:80
TCP(HTTP/1.1) 1####.251.204.195:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) ap####.g####.com:80
TCP(HTTP/1.1) 2####.107.1.1:80
TCP(TLS/1.0) 2####.107.1.97:443
TCP(TLS/1.0) 1####.3.146.133:443
TCP(TLS/1.0) 1####.217.168.238:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5225

DNS requests:

7j####.c####.z0.####.com
a####.man.aliy####.com
a####.u####.com
and####.b####.qq.com
ap####.g####.com
app.ish####.com
b####.g####.com
boo####.haoh####.cn
c####.g####.com
c####.g####.com
c####.g####.ig####.com
c-h####.g####.com
pub-####.qin####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net

HTTP GET requests:

app.ish####.com/pubres/otherres/cm_common.json?aaa_flag=####
qin####.com.www.####.com/tdata_EDT369
t####.c####.q####.####.com/tdata_Cta775
t####.c####.q####.####.com/tdata_UoC138
t####.c####.q####.####.com/tdata_YYn966
t####.c####.q####.####.com/tdata_lOE499
t####.c####.q####.####.com/tdata_nmo636
ti####.c####.l####.####.com/config/hz-hzv3.conf
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000005933/1100000...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000007217/1100000...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000007503/1100000...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000008457/1100000...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000023596/1100002...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000023734/1100002...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000028105/1100002...
ti####.c####.l####.####.com/cppartner/1x1/11x0/110x0/11000073309/1100007...

HTTP POST requests:

a####.u####.com/app_logs
and####.b####.qq.com/rqd/async?aid=####
ap####.g####.com/uploadIdBinding
c####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####&d=####&k=####
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/####/361985e1c275b813bf8da4ac64b56b0b6a14c9eec99817a....0.tmp
/data/data/####/426ec53fb891c9b7e5183210009ee8a6cbb3a06e61d84e4....0.tmp
/data/data/####/63fd5b40a8178478d21ab0963fa6b9674bc5f8f68a1b07f....0.tmp
/data/data/####/990cf0f8755e7fd15fa3fe1dc6a7a756578cba8eeab6040....0.tmp
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/MultiDex.lock
/data/data/####/aliclound_httpdns.db
/data/data/####/aliclound_httpdns.db-journal
/data/data/####/bbb5c0772be15677f0ac91b3bf93335e603b28a2d4293c1....0.tmp
/data/data/####/bugly_db_-journal
/data/data/####/c3328ae0fba47c8ee3df659fe794cecaeff32945573b14e....0.tmp
/data/data/####/c715ba25c86aa934877dd38cf35f7e4dcd3581c4fbf6184....0.tmp
/data/data/####/c80131306f1bb539ba2b93a8158598149b3b37856447822....0.tmp
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/cf4b96e7bf7832e3a31b90cff7498e503d81b9c97a7225b....0.tmp
/data/data/####/com.tsxs_dna.xml
/data/data/####/com.tsxs_preferences.xml
/data/data/####/com.tsxs_prefs.xml
/data/data/####/crashrecord.xml
/data/data/####/du.lock
/data/data/####/e0c482a9b98a
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gin.db-journal
/data/data/####/gkt-journal
/data/data/####/gtc.db-journal
/data/data/####/gx_sp.xml
/data/data/####/httpdns_config_cache.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
/data/data/####/journal.tmp
/data/data/####/libjiagu-621115237.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/####/pushk.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/tdata_Cta775
/data/data/####/tdata_Cta775.jar
/data/data/####/tdata_UoC138-441315609.tmp
/data/data/####/tdata_UoC138.jar
/data/data/####/tdata_YYn966
/data/data/####/tdata_YYn966.jar
/data/data/####/tdata_lOE499
/data/data/####/tdata_lOE499.jar
/data/data/####/tdata_nmo636
/data/data/####/tdata_nmo636.jar
/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/media/####/._android.dat
/data/media/####/._system.dat
/data/media/####/.nomedia
/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.tsxs.bin
/data/media/####/com.tsxs.db
/data/media/####/com.tsxs_.db
/data/media/####/factory.dzt
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/tdata_Cta775
/data/media/####/tdata_UoC138
/data/media/####/tdata_YYn966
/data/media/####/tdata_lOE499
/data/media/####/tdata_nmo636
/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 23831 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu-621115237.so
date
df
getprop
ip link
ls /dev/socket
ls /system/fonts
mkdir -p <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/
mount
ps
service call iphonesubinfo 1
sh -c cat /proc/meminfo
sh -c cat /sys/class/net/eth0/address
sh -c cd /proc/self/;cat status
sh -c echo M0UwRjVFRUFBNjRCOEE1OUFBRTRGRDIzQzM2MEZFMjdBNDc5RUM6NDlGMzczOjgzQkNFNQ== > <SD-Card>/../../../../../..<SD-Card>/._android.dat
sh -c echo M0UwRjVFRUFBNjRCOEE1OUFBRTRGRDIzQzM2MEZFMjdBNDc5RUM6NDlGMzczOjgzQkNFNQ== > <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
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.dzbook.service.GetTuiPushService 23831 300 0

Loads the following dynamic libraries:

Bugly
du
getuiext2
libjiagu-621115237

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB-NoPadding
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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