Adware.Gexin.867

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) l####.tbs.qq.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) nbkingl####.cn-hang####.log.####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(TLS/1.0) h5.nbking####.com:443
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) ti####.c####.l####.####.com:443
TCP(TLS/1.0) jic.talking####.com:443
TCP(TLS/1.0) c####.x####.com:443
TCP(TLS/1.0) api.nbking####.com:443
TCP(TLS/1.0) h5.u####.com:443
TCP c####.g####.ig####.com:5227
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.exc.mob.com
and####.b####.qq.com
api.nbking####.com
av1.x####.com
c####.g####.ig####.com
c####.x####.com
c-h####.g####.com
h5.nbking####.com
h5.u####.com
i####.nbking####.com
i.t####.com
jic.talking####.com
l####.tbs.qq.com
nbkingl####.cn-hang####.log.####.com
nbkingl####.cn-hang####.log.####.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:

sni.c####.q####.####.net/config/hz-hzv3.conf
sni.c####.q####.####.net/tdata_MkX219
sni.c####.q####.####.net/tdata_iGj879
t####.c####.q####.####.com/tdata_EDT356

HTTP POST requests:

and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
l####.tbs.qq.com/ajax?c=####&k=####
l####.tbs.qq.com/ajax?c=####&v=####&k=####
nbkingl####.cn-hang####.log.####.com/logstores/nbkingloan-statistics-rel...
nbkingl####.cn-hang####.log.####.com/logstores/nbkingloan_android_releas...
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.duid
/data/data/####/.jg.ic
/data/data/####/.lock
/data/data/####/.vpl_lock
/data/data/####/0c0f89cfdfdc
/data/data/####/1002
/data/data/####/1004
/data/data/####/129adc1377322affccaeff0423ce80454f156221b954c50....0.tmp
/data/data/####/1533192701486_2072
/data/data/####/1533192701615_2072
/data/data/####/1533192701797_2072
/data/data/####/1533192702085_2072
/data/data/####/1533192702547_2119
/data/data/####/1533192702619_2119
/data/data/####/3c720256e5f75a179e58153ea5353b583d854740c6cf77e....0.tmp
/data/data/####/4b31e8cf9cd40b57e8c7f710c8b158dd37062d5d24e05ee....0.tmp
/data/data/####/4b8cac0ef99fb19abfe5d66ab23f2a1ae07470d8e8ee1a4....0.tmp
/data/data/####/66378139dffd222df62df57a04927ea76d185265ed13ae7....0.tmp
/data/data/####/NUANSHUIDAI.xml
/data/data/####/TDCloudSettingsConfig12F2C56FF9B74241977422F5DE3FD067.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/a766b69bb2bfb2da64426f770a18a4f980a88a6809d16ef....0.tmp
/data/data/####/bankcode.json
/data/data/####/bugly_db_-journal
/data/data/####/c054860c1e46e5d35d91f540b54e3209f5527a8a2c03830....0.tmp
/data/data/####/com.nbkingloan.installmentloan.BETA_VALUES.xml
/data/data/####/com.nbkingloan.installmentloan_preferences.xml
/data/data/####/core_info
/data/data/####/crashrecord.xml
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/dba57a1cd933369b8d7186ae006633e68476304c58e252e....0.tmp
/data/data/####/debug.conf
/data/data/####/e2a27f6834b3676a60c86692b9567bd281191c948a8a87c....0.tmp
/data/data/####/ec5f69c2595aa0037920add34836cbc35be0879a785fe2c....0.tmp
/data/data/####/f_000001
/data/data/####/f_000002
/data/data/####/f_000003
/data/data/####/f_000004
/data/data/####/fc3b8ae9ae32cc058b2f3b97c858a86eeba882fc5545887....0.tmp
/data/data/####/fd7b824abe7b1d7a1adfbe01af71446781629c2f9bee904....0.tmp
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/index
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/journal.tmp
/data/data/####/libjiagu1019922207.so
/data/data/####/local_crash_lock
/data/data/####/mob_commons_1
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/data/data/####/province.json
/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/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_iGj879
/data/data/####/tdata_iGj879.jar
/data/data/####/tdid.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/media/####/.artc_lock
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.im_lock
/data/media/####/.lecd
/data/media/####/.lesd_lock
/data/media/####/.mn_-1464060969
/data/media/####/.nomedia
/data/media/####/.pkg_lock
/data/media/####/.pkgs_lock
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.ss_lock
/data/media/####/.tcookieid
/data/media/####/873a3b5d-dd06-4076-ad01-a5d366959229.jpg
/data/media/####/9k.png
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.nbkingloan.installmentloan.bin
/data/media/####/com.nbkingloan.installmentloan.db
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

/system/bin/sh -c getprop
/system/bin/sh -c type su
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.getui.PushService 26091 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu1019922207.so
getprop
getprop ro.product.cpu.abi
mount

Loads the following dynamic libraries:

Bugly
getuiext2
libjiagu1019922207

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-ECB-NoPadding
AES-GCM-NoPadding
DES-CBC-PKCS5Padding

Uses special library to hide executable bytecode.

Gains access to geolocation.

Gains access to network information.

Gains access to telephone information (number, imei, etc.).

Gains access to information about installed applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

Technologies

Terminology

Training and education

Myths

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