Adware.Gexin.10885

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) t####.c####.q####.####.com:80
TCP(HTTP/1.1) c.appj####.com:80
TCP(HTTP/1.1) a.appj####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) xjp-####.al####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(HTTP/1.1) qin####.com.www.####.com:80
TCP(HTTP/1.1) j####.net:80
TCP(TLS/1.0) ssl.gst####.com:443
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) adt.x####.com:443
TCP(TLS/1.0) www.go####.com:443
TCP(TLS/1.0) sh.wagbr####.al####.com:443
TCP(TLS/1.0) 1####.217.168.238:443
TCP(TLS/1.0) www.gst####.com:443
TCP(TLS/1.0) res####.a####.com:443
TCP(TLS/1.0) xjp-####.al####.com:443
TCP(TLS/1.0) www.go####.nl:443
TCP(TLS/1.0) adser####.go####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5227

DNS requests:

7j####.c####.z0.####.com
a.appj####.com
adser####.go####.com
adt.x####.com
amap####.cn-hang####.oss####.####.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
c.appj####.com
cn.al####.com
i.t####.com
j####.net
pub-####.qin####.com
res####.a####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
ssl.gst####.com
www.al####.com
www.go####.com
www.go####.nl
www.gst####.com

HTTP GET requests:

qin####.com.www.####.com/tdata_EDT369
sh.wagbr####.aliyun####.com/sdkcoor/android/x86/libJni_wgs2gcj.so
t####.c####.q####.####.com/tdata_AXX896
t####.c####.q####.####.com/tdata_BAI450
t####.c####.q####.####.com/tdata_Fus136
ti####.c####.l####.####.com/config/hz-hzv3.conf
xjp-####.al####.com/notfound/

HTTP POST requests:

a.appj####.com/jiagu/check/upgrade
c-h####.g####.com/api.php?format=####&t=####
c.appj####.com/ad/splash/stats.html
j####.net/apricots/base/app/version
sdk.o####.p####.####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####&d=####&k=####

HTTP PUT requests:

j####.net/apricots/push/init

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1248588266611.0
/data/data/####/15108438394888.0
/data/data/####/1553447599444_2276
/data/data/####/1553447599456_2276
/data/data/####/1553447599509_2276
/data/data/####/1553447599509_2276 (deleted)
/data/data/####/1553447599520_2276
/data/data/####/1553447599646_2276
/data/data/####/1553447599712_2276
/data/data/####/1553447599743_2276
/data/data/####/1553447599810_2276
/data/data/####/1553447601221_2276
/data/data/####/1553447601574_2276
/data/data/####/1553447605693_2412
/data/data/####/1553447605727_2412
/data/data/####/1553447605728_2412
/data/data/####/44102990323218.0
/data/data/####/5108435170012.0
/data/data/####/52102994587338.0
/data/data/####/53106057357389.0
/data/data/####/82c434854f2ec725764ebc3785db4040b3c7bb076cfebb5....0.tmp
/data/data/####/89106059412042.0
/data/data/####/89f604c66ae1d4cb310949820a678b1d51fa507778127da....0.tmp
/data/data/####/9948585576246.0
/data/data/####/TDCloudSettingsConfig8D93F3E5FC794B53B36C015977715AB5.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/####/ad_show_time.xml
/data/data/####/b7c1cf703430
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/com.jyc.xld_preferences.xml
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gkt-journal
/data/data/####/gx_sp.xml
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/jg_app_update_settings_random.xml
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/libjiagu.so
/data/data/####/loctemp.so
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/mobclick_agent_cached_com.jyc.xld11
/data/data/####/multidex.version.xml
/data/data/####/pref.xml
/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/####/tdata_AXX896
/data/data/####/tdata_AXX896.jar
/data/data/####/tdata_BAI450
/data/data/####/tdata_BAI450.jar
/data/data/####/tdata_Fus136
/data/data/####/tdata_Fus136.jar
/data/data/####/tdid.xml
/data/data/####/umeng_general_config.xml
/data/data/####/user.xml
/data/data/####/xld.xml
/data/media/####/.nomedia
/data/media/####/.tcookieid
/data/media/####/als.db
/data/media/####/als.db-journal
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.jyc.xld.bin
/data/media/####/com.jyc.xld.db
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/province.db
/data/media/####/tdata_AXX896
/data/media/####/tdata_BAI450
/data/media/####/tdata_Fus136
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.DemoPushService 24065 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so
getprop
mount
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.DemoPushService 24065 300 0

Loads the following dynamic libraries:

getuiext2
libjiagu

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-ECB-PKCS5Padding
DES-CBC-PKCS5Padding

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 installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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Mitos

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