Adware.Gexin.249

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) wb.110.ta####.com:80
TCP(HTTP/1.1) zhg.ali####.com:80
TCP(HTTP/1.1) p####.tc.qq.com:80
TCP(HTTP/1.1) dd.m####.t####.####.com:80
TCP(HTTP/1.1) 58.1####.143.47:80
TCP(HTTP/1.1) oc.u####.com:80
TCP(HTTP/1.1) s####.e.qq.com:80
TCP(HTTP/1.1) c.g####.qq.com:80
TCP(HTTP/1.1) v.g####.qq.com:80
TCP(HTTP/1.1) ad####.m.ta####.com:80
TCP(HTTP/1.1) ope####.m.ta####.com:80
TCP(HTTP/1.1) mi.g####.qq.com:80
TCP(HTTP/1.1) d.g####.qq.com:80
TCP(HTTP/1.1) ada####.m.ta####.com:80
TCP(HTTP/1.1) s####.tc.qq.com:80
TCP(TLS/1.0) sh.wagbr####.alibaba####.com:443
TCP(TLS/1.0) nbsdk-b####.al####.com:443

DNS requests:

acs4bai####.m.ta####.com
ad####.m.ta####.com
ada####.m.ta####.com
c.g####.qq.com
d.g####.qq.com
dd.m####.com
imgc####.qq.com
mi.g####.qq.com
nbsdk-b####.al####.com
oc.u####.com
p####.ugd####.com
plb####.u####.com
pp.m####.com
qzones####.g####.cn
s####.e.qq.com
u####.u####.com
v.g####.qq.com
wb.110.ta####.com
y####.al####.com

HTTP GET requests:

ad####.m.ta####.com/rest/gc2?ak=####&av=####&c=####&d=####&sv=####&t=###...
c.g####.qq.com/gdt_mclick.fcg?viewid=####&jtype=####&i=####&os=####&asi=...
c.g####.qq.com/gdt_trace_a.fcg?actionid=####&targettype=####&tagetid=###...
d.g####.qq.com/fcg-bin/gdt_appdetail.fcg?ico=####&op_appid=####
dd.m####.t####.####.com/16891/59FE906207DD116B73B7D7C9397ED770.apk?fsnam...
mi.g####.qq.com/gdt_mview.fcg?posw=####&spsa=####&posh=####&count=####&r...
ope####.m.ta####.com/gw-open/mtop.taobao.tbk.sdk.config/1.0/?data=####
p####.tc.qq.com/qzone/biz/gdt/mob/sdk/v2/android02/images/tsa_ad_logo.png
p####.tc.qq.com/qzone/biz/gdt/mod/android/AndroidAllInOne/proguard/his/r...
s####.tc.qq.com/gdt/0/DAAHU5BAKAAPAAAjBbSHTKAgBsMSJi.jpg/0?ck=####
s####.tc.qq.com/ma_icon/0/icon_42256978_1529568362/256
v.g####.qq.com/gdt_stats.fcg?viewid=####&i=####&os=####&xp=####&gap=####

HTTP POST requests:

ada####.m.ta####.com/rest/sur?ak=####&av=####&c=####&v=####&s=####&d=###...
oc.u####.com/v2/check_config_update
oc.u####.com/v2/get_update_time
s####.e.qq.com/activate
s####.e.qq.com/click
s####.e.qq.com/msg
wb.110.ta####.com/api/update.do
zhg.ali####.com/saveWb.json

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/0a231bd8575dcf72.txt
/data/data/####/1d77ea041509fe06.lock
/data/data/####/2086.yaqcookie
/data/data/####/21c22f492aba3de8.lock
/data/data/####/5ead7c1916e321af3ee0d7d6aa595238.temp
/data/data/####/65e0775c716622ec8f14b7ac8cd050db.temp
/data/data/####/8ef9c457b3bbb403.lock
/data/data/####/930a31b34bd52c08.lock
/data/data/####/AlibcLinkPartner.xml
/data/data/####/Alvin2.xml
/data/data/####/BuglySdkInfos.xml
/data/data/####/ContextData.xml
/data/data/####/GDTSDK.db
/data/data/####/GDTSDK.db-journal
/data/data/####/SGMANAGER_DATA2.tmp
/data/data/####/UM_PROBE_DATA.xml
/data/data/####/UTCommon.xml
/data/data/####/a==7.5.3&&2.4.3_1531827036067_envelope.log
/data/data/####/aliTradeConfigSP.xml
/data/data/####/ap.Lock
/data/data/####/auth_sdk_device.xml
/data/data/####/com.bycookie.memorytrainer_preferences.xml
/data/data/####/devCloudSetting.cfg
/data/data/####/devCloudSetting.sig
/data/data/####/dexMethod.63273144.dat
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gdt_plugin.jar
/data/data/####/gdt_plugin.jar.sig
/data/data/####/gdt_plugin.tmp
/data/data/####/gdt_plugin.tmp.sig
/data/data/####/gdt_suid
/data/data/####/i==1.2.0&&2.4.3_1531827035421_envelope.log
/data/data/####/info.xml
/data/data/####/libjiagu-2019108332.so
/data/data/####/libsgmainso-5.1.81.so.tmp
/data/data/####/libsgsecuritybodyso-5.1.25.so.tmp
/data/data/####/libyaqbasic.63273144.so
/data/data/####/libyaqpro.63273144.so
/data/data/####/lock.lock
/data/data/####/onlineconfig_agent_online_setting_com.bycookie....er.xml
/data/data/####/sdkCloudSetting.cfg
/data/data/####/sdkCloudSetting.sig
/data/data/####/sp.lock
/data/data/####/timestamp
/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/####/update_lc
/data/data/####/ut.db
/data/data/####/ut.db-journal
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/data/####/webviewCookiesChromiumPrivate.db-journal
/data/data/####/yaqsdkcookie
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.umm.dat
/data/media/####/6c709c11d2d46a7b
/data/media/####/712bcb9bc21eb5a7cf3c32282f253b83
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/com.ss.android.ugc.live.apk_0
/data/media/####/dd7893586a493dc3
/data/media/####/hid.dat

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
chmod 755 <Package Folder>/.jiagu/libjiagu-2019108332.so
ls /
ls /sys/class/thermal

Loads the following dynamic libraries:

libjiagu-2019108332
libyaqbasic.63273144
libyaqpro.63273144
sgmainso-5.1
sgsecuritybodyso-5.1
ut_c_api

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS7Padding

Uses the following algorithms to decrypt data:

AES-ECB-PKCS7Padding
RSA-ECB-PKCS1Padding

Uses special library to hide executable bytecode.

Gains access to geolocation.

Gains access to network information.

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

Displays its own windows over windows of other applications.

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