Adware.Gexin.6387

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) pub-####.qin####.com:80
TCP(HTTP/1.1) et2-na6####.wagbr####.ali####.####.com:80
TCP(HTTP/1.1) h####.b####.com:80
TCP(HTTP/1.1) l####.tbs.qq.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) ws.bdxia####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) cdn.boo####.com.####.net:443
TCP(TLS/1.0) hm.b####.com:443
TCP(TLS/1.0) ws.bdxia####.com:443
TCP(TLS/1.0) 1####.217.20.110:443
TCP(TLS/1.0) d####.bdxia####.com:443
TCP(TLS/1.0) h.1####.club:443
TCP c####.g####.ig####.com:5226
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
and####.b####.qq.com
c####.g####.ig####.com
c-h####.g####.com
cdn.boo####.com
d####.bdxia####.com
h####.b####.com
h.1####.club
hm.b####.com
l####.tbs.qq.com
loc.map.b####.com
log.u####.com
ms.1####.club
mt####.go####.com
pub-####.qin####.com
res.bdxia####.com
s####.u####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
ws.bdxia####.com

HTTP GET requests:

et2-na6####.wagbr####.ali####.####.com/bar/get/59157738c8957604d0001bc9/...
pub-####.qin####.com/tdata_EDT356
t####.c####.q####.####.com/tdata_MkX219
t####.c####.q####.####.com/tdata_iGj879
ws.bdxia####.com/resource/bdxdHmPg/产品banner-聚米.png
ws.bdxia####.com/resource/bdxdHmPg/产品banner小鲨.png
ws.bdxia####.com/resource/resImg/2018/7/27/1532681974562.png

HTTP POST requests:

and####.b####.qq.com/rqd/async
c-h####.g####.com/api.php?format=####&t=####
h####.b####.com/app.gif
l####.tbs.qq.com/ajax?c=####&k=####
loc.map.b####.com/offline_loc
loc.map.b####.com/sdk.php
sdk.o####.p####.####.com/api.php?format=####&t=####

File system changes:

Creates the following files:

/data/data/####/1544527480238.log
/data/data/####/1544527480238.log.bak (deleted)
/data/data/####/36989abe1bbc
/data/data/####/MultiDex.lock
/data/data/####/__Baidu_Stat_SDK_SendRem.xml
/data/data/####/__Baidu_Stat_SDK_SendRem.xml (deleted)
/data/data/####/__local_ap_info_cache.json
/data/data/####/__local_last_session.json
/data/data/####/__local_stat_cache.json
/data/data/####/__send_data_1544527479205
/data/data/####/__send_data_1544527481425
/data/data/####/__send_data_1544527482069
/data/data/####/bugly_db_legu-journal
/data/data/####/com.zealfi.bdxiaodai_preferences.xml
/data/data/####/core_info
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/debug.conf
/data/data/####/f_000001
/data/data/####/firll.dat
/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/####/libcuid.so
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/loaction_config.xml
/data/data/####/local_crash_lock
/data/data/####/mix.dex
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/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/####/pushsdk.db-journal
/data/data/####/pushservice__local_stat_cache.json
/data/data/####/remote__local_stat_cache.json
/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/####/tests_db-journal
/data/data/####/umeng_socialize.xml
/data/data/####/user sp.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.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/####/25lvtdczjw6a4nfm72bwe07z8.tmp
/data/media/####/63tpm5zwuajhiwmize1twg612.tmp
/data/media/####/app.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.zealfi.bdxiaodai.bin
/data/media/####/com.zealfi.bdxiaodai.db
/data/media/####/conlts.dat
/data/media/####/ller.dat
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.0
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

/system/bin/sh -c getprop ro.aa.romver
/system/bin/sh -c getprop ro.board.platform
/system/bin/sh -c getprop ro.build.fingerprint
/system/bin/sh -c getprop ro.build.nubia.rom.name
/system/bin/sh -c getprop ro.build.rom.id
/system/bin/sh -c getprop ro.build.tyd.kbstyle_version
/system/bin/sh -c getprop ro.build.version.emui
/system/bin/sh -c getprop ro.build.version.opporom
/system/bin/sh -c getprop ro.gn.gnromvernumber
/system/bin/sh -c getprop ro.lenovo.series
/system/bin/sh -c getprop ro.lewa.version
/system/bin/sh -c getprop ro.meizu.product.model
/system/bin/sh -c getprop ro.miui.ui.version.name
/system/bin/sh -c getprop ro.vivo.os.build.display.id
/system/bin/sh -c type su
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.PushService 24979 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.9.0.2.so
chmod 700 <Package Folder>/tx_shell/libufix.so
getprop ro.aa.romver
getprop ro.board.platform
getprop ro.build.fingerprint
getprop ro.build.nubia.rom.name
getprop ro.build.rom.id
getprop ro.build.tyd.kbstyle_version
getprop ro.build.version.emui
getprop ro.build.version.opporom
getprop ro.gn.gnromvernumber
getprop ro.lenovo.series
getprop ro.lewa.version
getprop ro.meizu.product.model
getprop ro.miui.ui.version.name
getprop ro.product.cpu.abi
getprop ro.vivo.os.build.display.id
getprop ro.yunos.version
getprop wifi.interface
logcat -d -v threadtime
mount
sh
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.service.PushService 24979 300 0

Loads the following dynamic libraries:

Bugly
crash_analysis
getuiext2
libnfix
libshella-2.9.0.2
libufix
locSDK6a
nfix
ufix

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS5Padding
AES-GCM-NoPadding

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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