Adware.Gexin.2032

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) ti####.c####.l####.####.com:80
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) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) pi####.qq.com:80
TCP(HTTP/1.1) 1####.254.116.117:80
TCP(TLS/1.0) fp.fraudme####.cn:443
TCP(TLS/1.0) sh.wagbr####.alibaba####.com:443
TCP(TLS/1.0) c####.v####.com:443
TCP(TLS/1.0) api.51dat####.com:443
TCP t####.qq.com:80
TCP t####.qq.com:443
TCP t####.qq.com:14000
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5227

DNS requests:

7j####.c####.z0.####.com
api.51dat####.com
c####.g####.ig####.com
c####.v####.com
c-h####.g####.com
fp.fraudme####.cn
l####.tbs.qq.com
pi####.qq.com
plb####.u####.com
pub-####.qin####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
t####.qq.com
u####.u####.com

HTTP GET requests:

t####.c####.q####.####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_rRG322
t####.c####.q####.####.com/tdata_vHH584
ti####.c####.l####.####.com/config/hz-hzv3.conf

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
l####.tbs.qq.com/ajax?c=####&k=####
pi####.qq.com/mstat/report/?index=####
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.com.fiveoneofly.cgw.xg.stat..xml
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/.tpns.service.xml.xml
/data/data/####/.tpns.settings.xml.xml
/data/data/####/.tpush_mta.xml
/data/data/####/MultiDex.lock
/data/data/####/a==7.5.3&&1.0.5_1535810296884_envelope.log
/data/data/####/b1e8ea1878e5
/data/data/####/com.fiveoneofly.cgw_preferences.xml
/data/data/####/core_info
/data/data/####/device_id.xml
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/fm_shared.xml
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/i==1.2.0&&1.0.5_1535810293577_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu-306922128.so
/data/data/####/multidex.version.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/qihoo_jiagu_crash_report.xml
/data/data/####/run.pid
/data/data/####/share_name.xml
/data/data/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/td_fm.jar
/data/data/####/tdata_rRG322
/data/data/####/tdata_rRG322.jar
/data/data/####/tdata_vHH584
/data/data/####/tdata_vHH584.jar
/data/data/####/tpush.shareprefs.xml
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_pri.xml
/data/data/####/umdat.xml
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_common_location.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/v5kf_client.xml
/data/data/####/v5kf_emoticons.db
/data/data/####/v5kf_emoticons.db-journal
/data/data/####/xg_message.db
/data/data/####/xg_message.db-journal
/data/data/####/xyjqbsharedpreferences.xml
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.umm.dat
/data/media/####/app.db
/data/media/####/com.fiveoneofly.cgw.bin
/data/media/####/com.fiveoneofly.cgw.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/tbslog.txt
/data/media/####/tdata_rRG322
/data/media/####/tdata_vHH584
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.third.getui.PushService 24922 300 0
<Package Folder>/lib/libxguardian.so <Package>,2100300726; 55968 203.205.128.130 [{ idx :0, ts :%d, et :2000, si :0, ui : <IMEI> , ky : Axg%lu , mid : 0 , ev :{ ov : 18 , sr : 600*752 , md : <System Property> , lg : en , sv : 3.25 , mf : unknown , apn : %s }}] 0 18
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu-306922128.so
getprop net.dns1
getprop ro.product.cpu.abi
ls -l /system/xbin/su
ls /sys/class/thermal
mount
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.third.getui.PushService 24922 300 0

Loads the following dynamic libraries:

getuiext2
libjiagu-306922128
tongdun
tpnsSecurity

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB8-NoPadding
AES-ECB-PKCS5Padding
RSA-ECB-NoPadding
RSA-ECB-PKCS1PADDING
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding
AES-CFB8-NoPadding
AES-ECB-PKCS5Padding
DES-ECB-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 APN settings.

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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