Adware.Gexin.12393

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) qin####.com.www.####.com:80
TCP(HTTP/1.1) sdk-ope####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) ws.bdxia####.com:80
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) h####.b####.com:80
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) ws.bdxia####.com:443
TCP(TLS/1.0) d####.bdxia####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5227

DNS requests:

7j####.c####.z0.####.com
c####.g####.ig####.com
c-h####.g####.com
d####.bdxia####.com
h####.b####.com
loc.map.b####.com
log.u####.com
pub-####.qin####.com
res.bdxia####.com
s####.u####.com
sdk-ope####.g####.com
sdk.c####.ig####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
ws.bdxia####.com

HTTP GET requests:

qin####.com.www.####.com/tdata_EDT369
t####.c####.q####.####.com/config/hz-hzv6.conf
t####.c####.q####.####.com/tdata_Gfv491
t####.c####.q####.####.com/tdata_MkX219
t####.c####.q####.####.com/tdata_iRz660
t####.c####.q####.####.com/tdata_zzW503
ws.bdxia####.com/resource/resImg/2018/10/24/1540359026722.png
ws.bdxia####.com/resource/resImg/2018/7/23/1532345637864.jpg
ws.bdxia####.com/resource/resImg/2018/7/23/1532345637876.jpg
ws.bdxia####.com/resource/resImg/2018/7/27/1532681974562.png
ws.bdxia####.com/resource/resImg/2018/9/11/1536658239499.jpg
ws.bdxia####.com/resource/resImg/2019/3/26/1553588498107.png
ws.bdxia####.com/resource/resImg/2019/3/26/1553593292706.png

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
h####.b####.com/app.gif
loc.map.b####.com/offline_loc
loc.map.b####.com/sdk.php
sdk-ope####.g####.com/api.php?format=####&t=####
sdk-ope####.g####.com/api.php?format=####&t=####&d=####&k=####

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1555490233557.log
/data/data/####/1555490233557.log.bak (deleted)
/data/data/####/1555490233560.log
/data/data/####/__Baidu_Stat_SDK_SendRem.xml
/data/data/####/__local_ap_info_cache.json
/data/data/####/__local_last_session.json
/data/data/####/__local_stat_cache.json
/data/data/####/__send_data_1555490230914
/data/data/####/__send_data_1555490233322
/data/data/####/__send_data_1555490234079
/data/data/####/com.zealfi.bdxiaodaidaikuan_preferences.xml
/data/data/####/f09f22600e6a
/data/data/####/firll.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gkt-journal
/data/data/####/gx_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libcuid.so
/data/data/####/libjiagu.so
/data/data/####/loaction_config.xml
/data/data/####/multidex.version.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/####/pushk.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/pushservice__local_stat_cache.json
/data/data/####/remote__local_stat_cache.json
/data/data/####/run.pid
/data/data/####/tdata_Gfv491
/data/data/####/tdata_Gfv491.jar
/data/data/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_iRz660
/data/data/####/tdata_iRz660.jar
/data/data/####/tdata_zzW503
/data/data/####/tdata_zzW503.jar
/data/data/####/tests_db-journal
/data/data/####/umeng_socialize.xml
/data/data/####/user sp.xml
/data/data/####/webview.db-journal
/data/media/####/.confd
/data/media/####/.confd-journal
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.nomedia
/data/media/####/.timestamp
/data/media/####/12jnt7kltarrcy8qydcq4jwav.tmp
/data/media/####/3ug2ljtng5btfvhquvzdg0t2u.tmp
/data/media/####/61nsqtiunmyc3j1oxpt5ja090.tmp
/data/media/####/6fusog2ks9mdf6x6yetlal0my.tmp
/data/media/####/79jueibypqjiqrj1rtxi430re.tmp
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.zealfi.bdxiaodaidaikuan.bin
/data/media/####/com.zealfi.bdxiaodaidaikuan.db
/data/media/####/conlts.dat
/data/media/####/fydfqgxdmi4t8ehp6iemacum.tmp
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/ller.dat
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/tdata_Gfv491
/data/media/####/tdata_MkX219
/data/media/####/tdata_iRz660
/data/media/####/tdata_zzW503
/data/media/####/test.0
/data/media/####/test.log
/data/media/####/tez64hha2ucdmz170nnwzf3w.tmp

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/com.zealfi.bdxiaodai.service.PushService 25712 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so
getprop wifi.interface
mount
sh
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.zealfi.bdxiaodai.service.PushService 25712 300 0

Loads the following dynamic libraries:

crash_analysis
getuiext2
libjiagu
locSDK6a

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-ECB-PKCS5Padding

Accesses the ITelephony private interface.

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.

Gets information about running apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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