Adware.Gexin.3000

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) api.mob####.mob.com:80
TCP(HTTP/1.1) m.d####.mob.com:80
TCP(HTTP/1.1) d####.d####.mob.com:80
TCP(HTTP/1.1) a####.exc.mob.com:80
TCP(HTTP/1.1) ser####.d####.36####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) c.d####.mob.com:80
TCP(HTTP/1.1) aliyun-####.al####.com:80
TCP(HTTP/1.1) beacon####.aliy####.com:80
TCP(HTTP/1.1) api.s####.mob.com:80
TCP(HTTP/1.1) a####.a####.m.####.com:80
TCP(TLS/1.0) 1####.217.17.142:443
TCP(TLS/1.0) api.map.b####.com:443
TCP(TLS/1.0) loc.map.b####.com:443
TCP(TLS/1.0) o####.map.b####.com:443
TCP(TLS/1.0) api.mob####.mob.com:443
TCP(TLS/1.0) ada####.m.ta####.com:443
TCP(TLS/1.0) sh.wagbr####.ta####.com:443
TCP ope####.m.ta####.com:443
TCP openj####.m.ta####.com:80

DNS requests:

a####.exc.mob.com
a####.m.ta####.com
accscdn####.m.ta####.com
acs4pu####.m.ta####.com
ada####.ut.ta####.com
adas####.ut.ta####.com
ag####.m.ta####.com
and####.b####.qq.com
api.map.b####.com
api.mob####.mob.com
api.s####.mob.com
beacon####.aliy####.com
c.d####.mob.com
d####.d####.mob.com
loc.map.b####.com
m.d####.mob.com
mpush####.al####.com
o####.map.b####.com
ser####.d####.36####.com

HTTP GET requests:

m.d####.mob.com/v4/cconf?appkey=####&plat=####&apppkg=####&appver=####&n...
ser####.d####.36####.com/index.php/home/api/gethomeparams?city=####
ser####.d####.36####.com/index.php/member/index/fetchinfo

HTTP POST requests:

a####.a####.m.####.com/amdc/mobileDispatch?appkey=####&deviceId=####&pla...
a####.exc.mob.com/errconf
aliyun-####.al####.com/config
and####.b####.qq.com/rqd/async
api.mob####.mob.com/conf
api.s####.mob.com/conf5
api.s####.mob.com/conn
api.s####.mob.com/log4
api.s####.mob.com/snsconf
beacon####.aliy####.com/beacon/fetch/config/byappkey
c.d####.mob.com/v3/cdata
d####.d####.mob.com/dgen
d####.d####.mob.com/dinfo
d####.d####.mob.com/dsign
ser####.d####.36####.com/index.php/member/index/bindaps

Modified file system:

Creates the following files:

/data/data/####/.duid
/data/data/####/.lock
/data/data/####/.mrecord
/data/data/####/.mrecord (deleted)
/data/data/####/.mrlock
/data/data/####/.statistics
/data/data/####/.vpl_lock
/data/data/####/ACCS_BIND24776791.xml
/data/data/####/ACCS_SDK.xml
/data/data/####/ACCS_SDK_CHANNEL.xml
/data/data/####/AGOO_BIND.xml
/data/data/####/Agoo_AppStore.xml
/data/data/####/Agoo_AppStore.xml.bak
/data/data/####/Alvin2.xml
/data/data/####/CONFIG.xml
/data/data/####/ContextData.xml
/data/data/####/CookiePrefsFile.xml
/data/data/####/DaemonServer
/data/data/####/MOBLINK_1
/data/data/####/MultiDex.lock
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/UTCommon.xml
/data/data/####/__Baidu_Stat_SDK_SendRem.xml
/data/data/####/__local_ap_info_cache.json
/data/data/####/__local_last_session.json
/data/data/####/__local_stat_cache.json
/data/data/####/__send_data_1537870713546
/data/data/####/aa94a50dd6d5fe1a43a7037a02955ba1.0.tmp
/data/data/####/aa94a50dd6d5fe1a43a7037a02955ba1.1.tmp
/data/data/####/accs.db-journal
/data/data/####/agoo.pid
/data/data/####/ap.Lock
/data/data/####/authStatus_com.ads360.app.xml
/data/data/####/authStatus_com.ads360.app;channel.xml
/data/data/####/authStatus_com.ads360.app;remote.xml
/data/data/####/baidu_mtj_sdk_record.xml
/data/data/####/bugly_db_legu-journal
/data/data/####/com.ads360.app_preferences.xml
/data/data/####/com_alibaba_aliyun_crash_defend_sdk_info
/data/data/####/eff33a234356631909b21e2767377f84.0.tmp
/data/data/####/eff33a234356631909b21e2767377f84.1.tmp
/data/data/####/eudemon
/data/data/####/firll.dat
/data/data/####/gal.db
/data/data/####/gal.db-journal
/data/data/####/hst.db
/data/data/####/hst.db-journal
/data/data/####/journal.tmp
/data/data/####/libcuid.so
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/message_accs_db
/data/data/####/message_accs_db-journal
/data/data/####/mix.dex
/data/data/####/mob_commons_1
/data/data/####/mob_sdk_exception_1
/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/####/security_info
/data/data/####/share_sdk_1
/data/data/####/sharesdk.db-journal
/data/data/####/top_time_0
/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/media/####/.al
/data/media/####/.artc_lock
/data/media/####/.confd
/data/media/####/.confd-journal
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.dh-journal
/data/media/####/.dhlock
/data/media/####/.di
/data/media/####/.dic_lock
/data/media/####/.digap
/data/media/####/.duid
/data/media/####/.globalLock
/data/media/####/.lecd
/data/media/####/.lesd_lock
/data/media/####/.mcli
/data/media/####/.nomedia
/data/media/####/.nulal
/data/media/####/.nulplt
/data/media/####/.pkg_lock
/data/media/####/.plst
/data/media/####/.rc_lock
/data/media/####/.slw
/data/media/####/.timestamp
/data/media/####/0f5990aa05c04bc485cb2bdabcb1e513
/data/media/####/1aa68732699a4075b2d81f9b55982f57
/data/media/####/1cb1b2db8c314cf59d998ac86ac0371d
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/conlts.dat
/data/media/####/d4f077ab14cd40ab8be0aa564ff8512f
/data/media/####/ls.db
/data/media/####/ls.db-journal

Miscellaneous:

Executes next 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/DaemonServer -s <Package Folder>/lib/ -n runServer -p startservice -n <Package>/com.taobao.accs.ChannelService --user 0 -f <Package Folder> -t 600 -c agoo.pid -P <Package Folder> -K 1009527 -U tb_accs_eudemon_1.1.3 -L http://agoodm.m.taobao.com/agoo/report -D {"package":"<Package>","appKey":"24776791","utdid":"W6oLeI24FUwDAGdzx1G1n8in","sdkVersion":"221"} -I agoodm.m.taobao.com -O 80 -T -Z
app_process /system/bin com.android.commands.pm.Pm list packages
cat /sys/class/net/wlan0/address
chmod 500 <Package Folder>/files/DaemonServer
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.display.id
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.smartisan.version
getprop ro.vivo.os.build.display.id
getprop ro.vivo.os.version
getprop ro.yunos.version
grep -E -v root|shell|system
logcat -d -v threadtime
pm list packages
sh
top -d 0 -n 1

Loads the following dynamic libraries:

BaiduMapSDK_base_v5_0_0
Bugly
crash_analysis
libnfix
libshella-2.9.0.2
libufix
locSDK7b
nfix
tnet-3.1
ufix
ut_c_api

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-ECB-PKCS5Padding
AES-ECB-PKCS7Padding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-ECB-NoPadding
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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