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Android.DownLoader.3674

Added to the Dr.Web virus database: 2018-07-03

Virus description added: 2018-07-03

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.Xiny.20

Downloads the following detected threats from the Web:

Android.Xiny.20

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) img.cool####.cn:80
TCP(HTTP/1.1) and####.he####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) 1####.171.129.66:80
TCP(HTTP/1.1) d####.fl####.com:80
TCP(HTTP/1.1) cd.kw####.com:80
TCP(HTTP/1.1) ads.he####.com:80
TCP(TLS/1.0) www.chartb####.com:443

DNS requests:

a####.u####.com
ads.he####.com
and####.b####.qq.com
and####.he####.com
cd.kw####.com
d####.fl####.com
img.cool####.cn
www.chartb####.com

HTTP GET requests:

and####.he####.com/mobile/track_sdk_event?sdk_version=####&android_versi...
img.cool####.cn/201807/bse.jar

HTTP POST requests:

a####.u####.com/app_logs
ads.he####.com/in_game_api/ads/fetch_ad
ads.he####.com/in_game_api/ads/register_new_game_install
and####.b####.qq.com/rqd/async
cd.kw####.com/c
cd.kw####.com/d?requestId=####&g=####
d####.fl####.com/aap.do

Modified file system:

Creates the following files:

/data/data/####/.FlurrySenderIndex.info.AnalyticsData_XQ5ZTY5GF...68_156
/data/data/####/.FlurrySenderIndex.info.AnalyticsMain
/data/data/####/.flurryagent.738589ef
/data/data/####/.flurrydatasenderblock.00b81ca7-0c54-4722-9b6b-...0bd5c5
/data/data/####/.flurrydatasenderblock.7bf6eefe-9030-4843-a7be-...ba544d
/data/data/####/.flurrydatasenderblock.b9f1ef0e-6091-423c-aed8-...0e1261
/data/data/####/.imprint
/data/data/####/ChartBoost.cb.xml
/data/data/####/Usr.hz
/data/data/####/W_Key.xml
/data/data/####/bugly_db_legu-journal
/data/data/####/com.djinnworks.ss16_preferences.xml
/data/data/####/com.djinnworks.ss16_preferences.xml.bak
/data/data/####/com.heyzap.sdk.ads.xml
/data/data/####/downloadswc
/data/data/####/downloadswc-journal
/data/data/####/exchangeIdentity.json
/data/data/####/libnfix.so
/data/data/####/libshella-2.8.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/mix.dex
/data/data/####/mobclick_agent_cached_com.djinnworks.ss1620180528
/data/data/####/native_record_lock
/data/data/####/security_info
/data/data/####/st.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/media/####/5.0bse.jar.u
/data/media/####/ChartBoost.cb
/data/media/####/restime.dat

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
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

Loads the following dynamic libraries:

Bugly
cocos2d-2
cocosdenshion
coregraphics
crystax_shared
foundation
gameCore
gnuobjc_shared
gnustl_shared
libnfix
libshella-2.8
libufix
nfix
ufix
zip

Uses the following algorithms to encrypt data:

AES-GCM-NoPadding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES-GCM-NoPadding

Uses special library to hide executable bytecode.

Gains access to network information.

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

Gains access to information about installed applications.

Displays its own windows over windows of other applications.

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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