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アンチウイルスに関する誤解と噂

アンチウイルスに関する誤解

ニュース

Android.Backdoor.923

Added to the Dr.Web virus database: 2018-03-29

Virus description added: 2018-03-29

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.Backdoor.657.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) api.s####.mob.com:80
TCP(HTTP/1.1) a####.exc.mob.com:80

DNS requests:

a####.exc.mob.com
api.s####.mob.com

HTTP POST requests:

a####.exc.mob.com/errconf
a####.exc.mob.com/errlog
api.s####.mob.com/conf5
api.s####.mob.com/conn
api.s####.mob.com/snsconf

Modified file system:

Creates the following files:

/data/anr/traces.txt
/data/data/####/.lock
/data/data/####/.mrecord
/data/data/####/.mrlock
/data/data/####/.statistics
/data/data/####/ACCS_SDK.xml
/data/data/####/Agoo_AppStore.xml
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/MessageStore.db-journal
/data/data/####/MsgLogStore.db-journal
/data/data/####/ThrowalbeLog.db-journal
/data/data/####/UM_PROBE_DATA.xml
/data/data/####/accs.db-journal
/data/data/####/com.google.android.gms.analytics.prefs.xml
/data/data/####/com.google.android.gms.analytics.prefs.xml (deleted)
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/google_analytics_v4.db-journal
/data/data/####/i==1.2.0&&13.7.6_1510835483838_envelope.log
/data/data/####/info.xml
/data/data/####/libcuid.so
/data/data/####/libjiagu.so
/data/data/####/mob_sdk_exception_1
/data/data/####/multidex.version.xml
/data/data/####/share_sdk_1
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/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/####/.cuid
/data/media/####/.cuid2
/data/media/####/.dic_lock
/data/media/####/.globalLock
/data/media/####/.pkg_lock
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/inapp_20171116.log

Miscellaneous:

Executes next shell scripts:

chmod 755 <Package Folder>/.jiagu/libjiagu.so
ls /
ls /sys/class/thermal
ps 2087
ps 2174
ps 2192
ps 2299
ps 2405
ps 2478
ps 2496
ps 2604
ps 2676
ps 2756
ps 2829
ps 2847
ps 2956
ps 3029

Loads the following dynamic libraries:

libjiagu
neh
tnet-3.1
tusdk-library

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-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.).

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.

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