Adware.Gexin.9243

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) norma-e####.m####.com:80
TCP(HTTP/1.1) c####.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) api.ish####.com:80
TCP(HTTP/1.1) b####.g####.com: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(HTTP/1.1) sh.wagbr####.aliyun####.com: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(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5225

DNS requests:

7j####.c####.z0.####.com
a####.man.aliy####.com
and####.b####.qq.com
ap####.g####.com
api.ish####.com
app.ish####.com
b####.g####.com
boo####.haoh####.cn
c####.g####.com
c####.g####.com
c####.g####.ig####.com
c-h####.g####.com
norma-e####.m####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
u####.u####.com
wap.cm####.com

HTTP GET requests:

api.ish####.com/pubres/otherres/cm_common.json?aaa_flag=####
norma-e####.m####.com/android/exchange/getpublickey.do
t####.c####.q####.####.com/tdata_Jga153
t####.c####.q####.####.com/tdata_UoC138
t####.c####.q####.####.com/tdata_Wqf010
t####.c####.q####.####.com/tdata_bca864
t####.c####.q####.####.com/tdata_ynp969
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:

and####.b####.qq.com/rqd/async?aid=####
ap####.g####.com/uploadIdBinding
api.ish####.com/asg/portal.do?aaa_flag=####
api.ish####.com/asg/portal/call/199.do
b####.g####.com/api.php?format=####&t=####
c####.g####.com/api.php?format=####&t=####
norma-e####.m####.com/push/android/external/add.do
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/####/4279771a6407d8ee703511d24bab8c374bacf7d915e9ca7....0.tmp
/data/data/####/522761a169e11cffc2079448f9f2596ef8d58ddb075b0bf....0.tmp
/data/data/####/5833792402495c84708a6bae055d315009d826f1eb7b977....0.tmp
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/Cookies250026699187743.xml
/data/data/####/MultiDex.lock
/data/data/####/a89a60807415df72509fb6b54a08c11c131f4808704ad10....0.tmp
/data/data/####/a==7.5.4&&3.8.9.3001_1551227063344_envelope.log
/data/data/####/af2fb82952b73680e86aca94d9827723acee036556a2609....0.tmp
/data/data/####/aliclound_httpdns.db
/data/data/####/aliclound_httpdns.db-journal
/data/data/####/bugly_db_-journal
/data/data/####/com.aikan_dna.xml
/data/data/####/com.aikan_preferences.xml
/data/data/####/com.aikan_preferences.xml.bak
/data/data/####/com.aikan_prefs.xml
/data/data/####/com.x.y.1.xml
/data/data/####/com.x.y.2.xml
/data/data/####/crashrecord.xml
/data/data/####/du.lock
/data/data/####/e1d34bc440a7b789e6e68dd0f50568ac4c129ea16f6a0c2....0.tmp
/data/data/####/e674b24ff9415da7ab38cdbee9e8308f01c3d128f4e8045....0.tmp
/data/data/####/e89c61343a180a0f1db02a65c5eaf35784c1d077e5abbc4....0.tmp
/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/####/hianalytics_global_v2_com.aikan.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/####/journal.tmp
/data/data/####/libjiagu-1414733795.so
/data/data/####/local_crash_lock
/data/data/####/msp.db
/data/data/####/msp.db-journal
/data/data/####/multidex.version.xml
/data/data/####/mz_push_preference.xml
/data/data/####/native_record_lock
/data/data/####/push.pid
/data/data/####/push_client_self_info.xml
/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_Jga153
/data/data/####/tdata_Jga153.jar
/data/data/####/tdata_UoC138-1969826249.tmp
/data/data/####/tdata_UoC138.jar
/data/data/####/tdata_Wqf010
/data/data/####/tdata_Wqf010.jar
/data/data/####/tdata_bca864
/data/data/####/tdata_bca864.jar
/data/data/####/tdata_ynp969
/data/data/####/tdata_ynp969.jar
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_common_config.xml
/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/####/.duid
/data/media/####/.nomedia
/data/media/####/2019-02-27.log.txt
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/_android.dat
/data/media/####/_system.dat
/data/media/####/app.db
/data/media/####/com.aikan.bin
/data/media/####/com.aikan.db
/data/media/####/com.aikan_.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/duid
/data/media/####/factory.dzt
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/payerr.txt
/data/media/####/tdata_Jga153
/data/media/####/tdata_UoC138
/data/media/####/tdata_Wqf010
/data/media/####/tdata_bca864
/data/media/####/tdata_ynp969
/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.dzpush.core.GtPushService 23881 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
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 cd /proc/self/;cat status
sh -c echo MzhFMjVCMDEwQzUxQUE1RTRBRUJFQTJCODg0RTIyNUJjMzljYmJiNWRiOGM0MWExYTQ1Zjk4NGM2NmZhM2ZjbQo= > <SD-Card>/../../../../../..<SD-Card>/.duid
sh -c echo MzhFMjVCMDEwQzUxQUE1RTRBRUJFQTJCODg0RTIyNUJjMzljYmJiNWRiOGM0MWExYTQ1Zjk4NGM2NmZhM2ZjbQo= > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/duid
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 -c echo RUU3MUIxNDRCNjA2MUM5MTE2MDFEQ0NFNUEwREE5QkIxNzMyNjc6Q0MyMTZBOjVCMkRCOA== > <SD-Card>/../../../../../..<SD-Card>/._android.dat
sh -c echo RUU3MUIxNDRCNjA2MUM5MTE2MDFEQ0NFNUEwREE5QkIxNzMyNjc6Q0MyMTZBOjVCMkRCOA== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_android.dat
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.dzpush.core.GtPushService 23881 300 0

Loads the following dynamic libraries:

Bugly
du
getuiext3
libjiagu-1414733795

Uses the following algorithms to encrypt data:

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