Adware.Gexin.108

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) a####.u####.com:80
TCP(HTTP/1.1) www.ta####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) m.ta####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(TLS/1.0) fp.fraudme####.cn:443
TCP(TLS/1.0) m.ta####.com:443
TCP(TLS/1.0) q####.a####.com:443
TCP(TLS/1.0) hm.b####.com:443
TCP(TLS/1.0) www.yangqia####.com:443
TCP(TLS/1.0) sni.c####.q####.####.com:443
TCP(TLS/1.0) z.c####.com:443
TCP(TLS/1.0) gm.mm####.com:443
TCP(TLS/1.0) k####.eas####.com:443
TCP(TLS/1.0) c.c####.com:443
TCP c####.g####.ig####.com:5225
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.u####.com
and####.b####.qq.com
api.yangqia####.com
c####.g####.ig####.com
c####.mm####.com
c-h####.g####.com
c.c####.com
fp.fraudme####.cn
h5.m.ta####.com
hm.b####.com
k####.eas####.com
m.ta####.com
ofsto####.q####.com
pu####.yangqia####.com
pub-####.qin####.com
s4.c####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
www.ta####.com
www.yangqia####.com
z11.c####.com

HTTP GET requests:

m.ta####.com/?sprefer=####
sni.c####.q####.####.net/config/hz-hzv3.conf
sni.c####.q####.####.net/tdata_Soq141
sni.c####.q####.####.net/tdata_vxj811
t####.c####.q####.####.com/tdata_EDT356
www.ta####.com/

HTTP POST requests:

a####.u####.com/app_logs
and####.b####.qq.com/rqd/async?aid=####
c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/-1555868571937209713
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/00bbeedc9825
/data/data/####/1002
/data/data/####/1004
/data/data/####/3798101041318542554
/data/data/####/6877177261873336068
/data/data/####/BUGLY_COMMON_VALUES.xml
/data/data/####/MUSIC_HASH.xml
/data/data/####/UUID_internal.xml
/data/data/####/UUID_retry.xml
/data/data/####/androidUUID.xml
/data/data/####/appDownloadUrl.xml
/data/data/####/bugly_db_-journal
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/com.lingyue.YqgAndroid.BETA_VALUES.xml
/data/data/####/com.lingyue.YqgAndroid.BETA_VALUES.xml.bak
/data/data/####/com.lingyue.YqgAndroid.BETA_VALUES.xml.bak (deleted)
/data/data/####/crashrecord.xml
/data/data/####/customerServicePhone.xml
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/device_id.xml.xml
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/f_000001
/data/data/####/f_000002
/data/data/####/f_000003
/data/data/####/f_000004
/data/data/####/f_000005
/data/data/####/f_000006
/data/data/####/f_000007
/data/data/####/f_000008
/data/data/####/f_000009
/data/data/####/f_00000a
/data/data/####/f_00000b
/data/data/####/f_00000c
/data/data/####/f_00000d
/data/data/####/f_00000e
/data/data/####/fm_shared.xml
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/homeAdInfo.xml
/data/data/####/httpclient-req-2085299585.cache
/data/data/####/httpclient-req-2085299585.cache (deleted)
/data/data/####/index
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/isFinishFirstInvestGuideRequired.xml
/data/data/####/isFinishRegisterGuideRequired.xml
/data/data/####/isFinishVerifyIdentityGuideRequired.xml
/data/data/####/isInvestorsEvaluatingRequired.xml
/data/data/####/kefuinfo.xml
/data/data/####/libjiagu1477213498.so
/data/data/####/local_crash_lock
/data/data/####/native_record_lock
/data/data/####/new_version_code.xml
/data/data/####/new_version_name.xml
/data/data/####/new_version_notified.xml
/data/data/####/new_version_url.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/####/security_info
/data/data/####/shouldShowScan.xml
/data/data/####/showAssetMask.xml
/data/data/####/td_fm.jar
/data/data/####/tdata_Soq141
/data/data/####/tdata_Soq141.jar
/data/data/####/tdata_vxj811
/data/data/####/tdata_vxj811.jar
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/version_introduction_url.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/data/####/webviewCookiesChromiumPrivate.db-journal
/data/media/####/.yangqianguanId
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.lingyue.YqgAndroid.db
/data/media/####/tdata_Soq141
/data/media/####/tdata_vxj811
/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>/com.igexin.sdk.PushService 25186 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu1477213498.so
getprop
getprop net.dns1
getprop net.dns2
ls -l /system/xbin/su
mount
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.igexin.sdk.PushService 25186 300 0

Loads the following dynamic libraries:

Bugly
getuiext2
hyphenate
hyphenate_av
hyphenate_av_recorder
libjiagu1477213498
sqlite
tongdun

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
AES-GCM-NoPadding

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.

Gains access to information about running applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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