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Android.DownLoader.4225

Added to the Dr.Web virus database: 2019-03-12

Virus description added: 2019-03-12

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.Xiny.20
Android.Xiny.224.origin

Downloads the following detected threats from the Internet:

Android.Xiny.20

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) aexcep####.b####.qq.com:8012
TCP(HTTP/1.1) img.cool####.cn:80
TCP(HTTP/1.1) prod####.m####.com.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) dataser####.m####.com:80
TCP(HTTP/1.1) 1####.78.31.198:8030
TCP(HTTP/1.1) m####.z####.cn:80
TCP(HTTP/1.1) cd.kw####.com:80
TCP(HTTP/1.1) www.m####.com:80
TCP(HTTP/1.1) www.i####.com:80
TCP(TLS/1.0) aliyuno####.oss-cn-####.aliy####.com:443
TCP(TLS/1.0) b####.be####.top:443

DNS requests:

aexcep####.b####.qq.com
aliyuno####.oss-cn-####.aliy####.com
and####.b####.qq.com
b####.be####.top
cd.kw####.com
dataser####.m####.com
img.cool####.cn
m####.z####.cn
prod####.m####.com
www.i####.com
www.m####.com

HTTP GET requests:

dataser####.m####.com/Models/api/Adaptation?device=####&model=####&produ...
img.cool####.cn/201807/osr.jar
prod####.m####.com.####.com/api/checkupdate?productCode=####&versionCode...
www.i####.com/
www.i####.com/favicon.ico
www.i####.com/static/v2/css/base.css
www.i####.com/static/v2/css/irootstyle.mb.css
www.i####.com/static/v2/img/andriod-ico.png
www.i####.com/static/v2/img/home-logo.png
www.i####.com/static/v2/img/home_down.png
www.i####.com/static/v2/img/home_second_a.png
www.i####.com/static/v2/img/home_second_b.png
www.i####.com/static/v2/img/home_second_c.png
www.i####.com/static/v2/img/logo_root.png
www.i####.com/static/v2/img/menu-logo.png
www.i####.com/static/v2/js/iroot.js
www.i####.com/static/v2/js/jquery-1.11.3.min.js
www.i####.com/static/v2/js/jquery.mousewheel.min.js
www.i####.com/static/v2/js/touch-0.2.14.min.js
www.i####.com/static/v2/js/unslider.min.js
www.m####.com/m/en/romastersu
www.m####.com/romastersu

HTTP POST requests:

aexcep####.b####.qq.com:8012/rqd/async
and####.b####.qq.com/rqd/async
cd.kw####.com/d?requestId=####&g=####
m####.z####.cn/s

File system changes:

Creates the following files:

/data/data/####/Vk2K9.png
/data/data/####/W_Key.xml
/data/data/####/bugly_db_legu-journal
/data/data/####/com.chaijiroot.xtwapp.com.abc.eee.c.amsg.db-journal
/data/data/####/com.chaijiroot.xtwapp_preferences.xml
/data/data/####/cxh_0.xml
/data/data/####/downloadswc
/data/data/####/downloadswc-journal
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/mix.dex
/data/data/####/native_record_lock
/data/data/####/onePay.xml
/data/data/####/security_info
/data/data/####/setting.xml
/data/data/####/st.xml
/data/data/####/z.xml
/data/media/####/4.9osr.jar
/data/media/####/restime.dat

Miscellaneous:

Executes the following shell scripts:

/system/bin/sh
/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
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.device
getprop ro.vivo.os.build.display.id
getprop ro.yunos.version
id
logcat -d -v threadtime
sh
su

Loads the following dynamic libraries:

Bugly
jackpal-androidterm4
libnfix
libshella-2.9.0.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

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

Uses the following algorithms to decrypt data:

AES-ECB-PKCS5Padding
AES-GCM-NoPadding
DES
DES-CBC-PKCS5Padding

Uses elevated priveleges.

Uses special library to hide executable bytecode.

Gets information about location.

Gets information about network.

Gets information about phone status (number, IMEI, etc.).

Displays its own windows over windows of other apps.

Parses information from SMS.

Curing recommendations

Android

If the mobile device is operating normally, download and install Dr.Web for Android Light. Run a full system scan and follow recommendations to neutralize the detected threats.
If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
- Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
- Once you have activated safe mode, install the Dr.Web для Android Light onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
- Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android

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14 days

Get it on Google Play