Android.Backdoor.1191

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.Backdoor.401.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) amdc####.m.ta####.com:80
TCP(HTTP/1.1) www.guangsu####.com:80
TCP(TLS/1.0) sh.wagbr####.alibaba####.com:443
TCP(TLS/1.0) msg.umengc####.com:443
TCP(TLS/1.0) and####.cli####.go####.com:443
TCP umengj####.m.ta####.com:443
TCP ope####.m.ta####.com:443

DNS requests:

ag####.m.ta####.com
amdc####.m.ta####.com
and####.b####.qq.com
and####.cli####.go####.com
msg.umengc####.com
plb####.u####.com
u####.u####.com
umen####.m.ta####.com
umengj####.m.ta####.com
www.guangsu####.com

HTTP GET requests:

www.guangsu####.com/servlet/current/GSDJkAction?function=####

HTTP POST requests:

amdc####.m.ta####.com/amdc/mobileDispatch?appkey=####&deviceId=####&plat...
and####.b####.qq.com/rqd/async

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/ACCS_BINDumeng;5a251a5eb27b0a72ac000105.xml
/data/data/####/ACCS_SDK.xml
/data/data/####/ACCS_SDK_CHANNEL.xml
/data/data/####/ACCS_SDK_CHANNEL.xml.bak
/data/data/####/AGOO_BIND.xml
/data/data/####/Agoo_AppStore.xml
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/DaemonServer
/data/data/####/MessageStore.db-journal
/data/data/####/MsgLogStore.db-journal
/data/data/####/UM_PROBE_DATA.xml
/data/data/####/a==7.4.0&&2.2.6_1524879920584_envelope.log
/data/data/####/accs.db-journal
/data/data/####/agoo.pid
/data/data/####/bugly_db_legu-journal
/data/data/####/eudemon
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/i==1.2.0&&2.2.6_1524879920022_envelope.log
/data/data/####/info.xml
/data/data/####/libnfix.so
/data/data/####/libshella-2.8.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/####/native_record_lock
/data/data/####/security_info
/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_general_config.xml
/data/data/####/umeng_general_config.xml.bak (deleted)
/data/data/####/umeng_it.cache
/data/data/####/umeng_message_state.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/data/####/webviewCookiesChromiumPrivate.db-journal
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.nomedia
/data/media/####/.umm.dat
/data/media/####/0bd4dd89d30a44eb8181acf86cb5dacc
/data/media/####/13dfa30bc62b442b93b0be89e03f6fb2
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/deviceToken
/data/media/####/edd39202de0e47399c617165049e4842
/data/media/####/f9f74c65948742b6af59c5c1c87f0ad3

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
/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":"umeng:5a251a5eb27b0a72ac000105","utdid":"WuPSL50afrEDAGdzx1G8jBuf","sdkVersion":"221"} -I agoodm.m.taobao.com -O 80 -T -Z
chmod 500 <Package Folder>/files/DaemonServer
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.8.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.vivo.os.build.display.id
getprop ro.yunos.version
logcat -d -v threadtime
ls /
ls /sys/class/thermal
sh

Loads the following dynamic libraries:

Bugly
libnfix
libshella-2.8
libtpnsSecurity
libufix
nfix
tnet-3.1
tpnsSecurity
ufix

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
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 running applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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