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Android.DownLoader.4723

Added to the Dr.Web virus database: 2019-10-24

Virus description added:

Technical information

Malicious functions:
Executes code of the following detected threats:
  • Android.RemoteCode.242.origin
  • Android.Xiny.1513
Downloads the following detected threats from the Internet:
  • Android.Xiny.1513
Network activity:
Connects to:
  • UDP(DNS) 8####.8.4.4:53
  • TCP(HTTP/1.1) adl.a####.net:5285
  • TCP(HTTP/1.1) ap.bigb####.com:6099
  • TCP(HTTP/1.1) lp.lapia####.com:6099
  • TCP(TLS/1.0) f####.gst####.com:443
  • TCP(TLS/1.0) dualsta####.wagbr####.ali####.####.com:443
  • TCP(TLS/1.0) p####.google####.com:443
  • TCP(TLS/1.0) instant####.google####.com:443
  • TCP(TLS/1.0) safebro####.google####.com:443
  • TCP(TLS/1.0) and####.google####.com:443
  • TCP(TLS/1.0) 1####.217.17.42:443
  • TCP(TLS/1.0) and####.cli####.go####.com:443
  • TCP d.angs####.com:9270
DNS requests:
  • adl.a####.net
  • and####.cli####.go####.com
  • and####.google####.com
  • ap.bigb####.com
  • d.angs####.com
  • dd.bigb####.com
  • f####.gst####.com
  • instant####.google####.com
  • l####.bigb####.com
  • lp.lapia####.com
  • m####.go####.com
  • p####.google####.com
  • plb####.u####.com
  • safebro####.google####.com
  • u####.u####.com
HTTP GET requests:
  • adl.a####.net:5285/dd/a/dl?appId=####
HTTP POST requests:
  • ap.bigb####.com:6099/aps/
  • lp.lapia####.com:6099/aps/
File system changes:
Creates the following files:
  • /data/dalvik-cache/####/system@framework@am.jar@classes.dex
  • /data/dalvik-cache/####/system@framework@am.jar@classes.dex.flo...leted)
  • /data/data/####/.imprint
  • /data/data/####/Alvin2.xml
  • /data/data/####/ContextData.xml
  • /data/data/####/UM_PROBE_DATA.xml
  • /data/data/####/XinZF.xml
  • /data/data/####/XinZF_conf.xml
  • /data/data/####/XinZF_conf.xml.bak
  • /data/data/####/XinZFsmspay.db
  • /data/data/####/XinZFsmspay.db-journal
  • /data/data/####/a4b645a09e1352ed9a43ff469655db6d_3_1_5.dex
  • /data/data/####/a4b645a09e1352ed9a43ff469655db6d_3_1_5.dex.flock (deleted)
  • /data/data/####/a4b645a09e1352ed9a43ff469655db6d_3_1_5.zip
  • /data/data/####/a4b645a09e1352ed9a43ff469655db6d_3_1_5.zip.tmp
  • /data/data/####/dW1weF9pbnRlcm5hbF8xNTcxODc1MzMwODI5;
  • /data/data/####/efnvute.hxij.oulkntm_preferences.xml
  • /data/data/####/efnvute.hxij.oulkntm_preferences.xml.bak
  • /data/data/####/efnvute.hxij.oulkntm_preferences.xml.bak (deleted)
  • /data/data/####/exchangeIdentity.json
  • /data/data/####/exid.dat
  • /data/data/####/i==1.2.0&&1.0.0_1571875330834_envelope.log
  • /data/data/####/info.xml
  • /data/data/####/lpeg.dex
  • /data/data/####/lpeg.dex.flock (deleted)
  • /data/data/####/lpeg.jar
  • /data/data/####/orbgi.dex
  • /data/data/####/orbgi.dex.flock (deleted)
  • /data/data/####/orbgi.jar
  • /data/data/####/proc_auxv
  • /data/data/####/uid.f
  • /data/data/####/um_pri.xml
  • /data/data/####/umdat.xml
  • /data/data/####/umeng_common_config.xml
  • /data/data/####/umeng_common_location.xml
  • /data/data/####/umeng_general_config.xml
  • /data/data/####/umeng_it.cache
  • /data/data/####/yunUid.f
  • /data/media/####/.a.dat
  • /data/media/####/.adfwe.dat
  • /data/media/####/.cca.dat
  • /data/media/####/.umm.dat
  • /data/media/####/Alvin2.xml
  • /data/media/####/ContextData.xml
  • /data/media/####/plugin.apk
  • /data/media/####/z.jar
  • /data/misc/####/primary.prof
Miscellaneous:
Executes the following 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/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/app_jar/lpeg.jar --oat-fd=56 --oat-location=/data/user/0/<Package>/app_dex/lpeg.dex --compiler-filter=speed
  • /system/bin/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/app_jar/orbgi.jar --oat-fd=54 --oat-location=/data/user/0/<Package>/app_dex/orbgi.dex --compiler-filter=speed
  • /system/bin/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/files/md/a4b645a09e1352ed9a43ff469655db6d_3_1_5.zip --oat-fd=68 --oat-location=/data/user/0/<Package>/app_jar/a4b645a09e1352ed9a43ff469655db6d_3_1_5.dex --compiler-filter=speed
  • /system/bin/log -p d -t su /dev/com.android.settings/.socket3358
  • /system/bin/log -p d -t su /dev/com.android.settings/.socket3625
  • /system/bin/log -p d -t su child exited
  • /system/bin/log -p d -t su client exited 1
  • /system/bin/log -p d -t su connecting client 3344
  • /system/bin/log -p d -t su connecting client 3612
  • /system/bin/log -p d -t su remote args: 1
  • /system/bin/log -p d -t su remote pid: 3344
  • /system/bin/log -p d -t su remote pid: 3612
  • /system/bin/log -p d -t su remote pts_slave:
  • /system/bin/log -p d -t su remote req pid: 3162
  • /system/bin/log -p d -t su remote uid: 10065
  • /system/bin/log -p d -t su sending code
  • /system/bin/log -p d -t su starting daemon client 10065 10065
  • /system/bin/log -p d -t su su invoked.
  • /system/bin/log -p d -t su waiting for child exit
  • /system/bin/log -p e -t su select failed with 2: No such file or directory
  • /system/bin/log -p e -t su sqlite3 open /data/user_de/0/com.android.settings/databases/su.sqlite failure: 14
  • /system/bin/log -p w -t su request rejected (10065->0 /system/bin/sh)
  • /system/bin/su
  • ls -l /system/bin/su
  • ls /
  • ls /sys/class/thermal
  • sh -c cat /sys/block/mmcblk0/device/cid
  • sh -c cat /sys/class/net/wlan0/address
Uses the following algorithms to encrypt data:
  • AES-CBC-PKCS5Padding
Uses elevated priveleges.
Accesses the ITelephony private interface.
Gets information about location.
Gets information about network.
Gets information about phone status (number, IMEI, etc.).
Gets information about running apps.
Displays its own windows over windows of other apps.
Gets information about sent/received SMS.

Curing recommendations

Android

  1. 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.
  2. 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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