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Adware.Gexin.8612

Added to the Dr.Web virus database: 2019-02-13

Virus description added:

Technical information

Malicious functions:
Executes code of the following detected threats:
  • Adware.Gexin.2.origin
Accesses the ITelephony private interface.
Network activity:
Connects to:
  • UDP(DNS) <Google DNS>
  • TCP(HTTP/1.1) ti####.c####.l####.####.com:80
  • TCP(HTTP/1.1) qin####.com.www.####.com:80
  • TCP(HTTP/1.1) t####.c####.q####.####.com:80
  • TCP(HTTP/1.1) cgi.con####.qq.com:80
  • TCP(HTTP/1.1) loc.map.b####.com:80
  • TCP(HTTP/1.1) c-h####.g####.com:80
  • TCP(HTTP/1.1) sdk.o####.p####.####.com:80
  • TCP(TLS/1.0) e1.im####.com:443
  • TCP(TLS/1.0) 1####.217.168.206:443
  • TCP sdk.o####.t####.####.com:5224
  • TCP c####.g####.ig####.com:5224
DNS requests:
  • 7j####.c####.z0.####.com
  • c####.g####.ig####.com
  • c-h####.g####.com
  • cgi.con####.qq.com
  • e1.im####.com
  • loc.map.b####.com
  • pub-####.qin####.com
  • sdk.c####.ig####.com
  • sdk.o####.p####.####.com
  • sdk.o####.t####.####.com
  • sdk.o####.t####.####.com
  • sdk.o####.t####.####.net
HTTP GET requests:
  • cgi.con####.qq.com/qqconnectopen/openapi/policy_conf?sdkv=####&appid=###...
  • qin####.com.www.####.com/tdata_EDT369
  • t####.c####.q####.####.com/tdata_Soq141
  • t####.c####.q####.####.com/tdata_fEV688
  • t####.c####.q####.####.com/tdata_ntt510
  • ti####.c####.l####.####.com/config/hz-hzv3.conf
HTTP POST requests:
  • c-h####.g####.com/api.php?format=####&t=####
  • loc.map.b####.com/sdk.php
  • sdk.o####.p####.####.com/api.php?format=####&t=####
File system changes:
Creates the following files:
  • /data/data/####/.jg.ic
  • /data/data/####/9aa3a95a4caf
  • /data/data/####/com.showself.ui_preferences.xml
  • /data/data/####/com.showself.ui_prefs.xml
  • /data/data/####/com.showself.ui_prefs.xml.bak
  • /data/data/####/com.tencent.open.config.json.100294405
  • /data/data/####/foxmessage.db
  • /data/data/####/foxmessage.db-journal
  • /data/data/####/gdaemon_20161017
  • /data/data/####/getui_sp.xml
  • /data/data/####/gx_sp.xml
  • /data/data/####/init.pid
  • /data/data/####/init_c1.pid
  • /data/data/####/jg_so_upgrade_setting.xml
  • /data/data/####/lehai_other_switch.xml
  • /data/data/####/libjiagu.so
  • /data/data/####/md5_info.xml
  • /data/data/####/multidex.version.xml
  • /data/data/####/myLoginInfo.xml
  • /data/data/####/netType.xml
  • /data/data/####/note.xml
  • /data/data/####/pref_key.xml
  • /data/data/####/push.pid
  • /data/data/####/pushext.db-journal
  • /data/data/####/pushg.db-journal
  • /data/data/####/pushk.db-journal
  • /data/data/####/pushsdk.db-journal
  • /data/data/####/run.pid
  • /data/data/####/showself_guide.xml
  • /data/data/####/tdata_Soq141
  • /data/data/####/tdata_Soq141.jar
  • /data/data/####/tdata_fEV688
  • /data/data/####/tdata_fEV688.jar
  • /data/data/####/tdata_ntt510
  • /data/data/####/tdata_ntt510.jar
  • /data/data/####/tencent_analysis.db-journal
  • /data/media/####/._android.dat
  • /data/media/####/._driver.dat
  • /data/media/####/._system.dat
  • /data/media/####/.aio.dat
  • /data/media/####/.cuid
  • /data/media/####/.nomedia
  • /data/media/####/1.app.log
  • /data/media/####/_android.dat
  • /data/media/####/_driver.dat
  • /data/media/####/_system.dat
  • /data/media/####/aio.dat
  • /data/media/####/app.db
  • /data/media/####/com.getui.sdk.deviceId.db
  • /data/media/####/com.igexin.sdk.deviceId.db
  • /data/media/####/com.showself.ui.bin
  • /data/media/####/com.showself.ui.db
  • /data/media/####/con.dat
  • /data/media/####/ls.db
  • /data/media/####/ls.db-journal
  • /data/media/####/tdata_Soq141
  • /data/media/####/tdata_fEV688
  • /data/media/####/tdata_ntt510
  • /data/media/####/test.log
  • /data/media/####/yoh.dat
  • /data/media/####/yol.dat
  • /data/media/####/yom.dat
Miscellaneous:
Executes the following shell scripts:
  • <Package Folder>/files/gdaemon_20161017 0 <Package>/com.showself.service.ShowselfGetuiService 24508 300 0
  • cat /sys/class/net/wlan0/address
  • chmod 700 <Package Folder>/files/gdaemon_20161017
  • chmod 755 <Package Folder>/.jiagu/libjiagu.so
  • date
  • df
  • id
  • ls /dev/socket
  • ls /system/fonts
  • mkdir -p <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/
  • mount
  • ps
  • service call iphonesubinfo 1
  • sh -c cat
  • sh -c cat /proc/meminfo
  • sh -c cat /proc/sys/kernel/osrelease
  • sh -c cat /proc/sys/kernel/random/boot_id
  • sh -c cat /proc/sys/kernel/random/uuid
  • sh -c cat /proc/uptime
  • sh -c cat /sys/block/mmcblk0/device/cid
  • sh -c cat /sys/class/net/eth0/address
  • sh -c cat /sys/class/net/eth1/address
  • sh -c cat /sys/class/net/eth2/address
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/..ccdid
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/..ccvid
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/._android.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/._driver.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/._system.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/.acc.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/.aio.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/.ccdid
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/.ccvid
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_android.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_driver.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_system.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/acc.dat
  • sh -c cat <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/aio.dat
  • sh -c cd /proc/;cat cpuinfo
  • sh -c cd /proc/net/ && cat arp
  • sh -c cd /proc/self/;cat status
  • sh -c cd /sys/class/net/eth0/ && cat address
  • sh -c cd /sys/class/net/wlan0/ && cat address
  • sh -c echo MzE4OEZFNTYyRjM2OEMwODE1Nzg0RUU3QjA4QzYxQUI3Q0VGRTg6NEYxRTk5OjZFMEVDQg== > <SD-Card>/../../../../../..<SD-Card>/._driver.dat
  • sh -c echo MzE4OEZFNTYyRjM2OEMwODE1Nzg0RUU3QjA4QzYxQUI3Q0VGRTg6NEYxRTk5OjZFMEVDQg== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_driver.dat
  • sh -c echo NjJDQ0I5MjIzMzQ1QUJFQTAxOTNFMkM4Njg3Q0U0RjIxNTUwMDkzMTIy > <SD-Card>/../../../../../..<SD-Card>/.aio.dat
  • sh -c echo NjJDQ0I5MjIzMzQ1QUJFQTAxOTNFMkM4Njg3Q0U0RjIxNTUwMDkzMTIy > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/aio.dat
  • sh -c echo QjU4NUVFQTBCMEQ3MkI1Mzg5QjM5ODQ1MzQ1NUNFMDMzQzdBQjU6ODg2Qzc4OjI3RERDMw== > <SD-Card>/../../../../../..<SD-Card>/._system.dat
  • sh -c echo QjU4NUVFQTBCMEQ3MkI1Mzg5QjM5ODQ1MzQ1NUNFMDMzQzdBQjU6ODg2Qzc4OjI3RERDMw== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_system.dat
  • sh -c echo REE2M0VDRjU5RUY2QUVEMzRCNzg0OTM5NTFBNkVFQkM4ODk5MEU6RkEyQkY4Ojk1M0E5Nw== > <SD-Card>/../../../../../..<SD-Card>/._android.dat
  • sh -c echo REE2M0VDRjU5RUY2QUVEMzRCNzg0OTM5NTFBNkVFQkM4ODk5MEU6RkEyQkY4Ojk1M0E5Nw== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_android.dat
  • sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.showself.service.ShowselfGetuiService 24508 300 0
Loads the following dynamic libraries:
  • aes
  • du
  • getuiext2
  • libjiagu
  • locSDK4
Uses the following algorithms to encrypt data:
  • AES-CBC-PKCS5Padding
  • DES
  • RSA-NONE-OAEPWithSHA1AndMGF1Padding
Uses the following algorithms to decrypt data:
  • DES
Uses special library to hide executable bytecode.
Gets information about location.
Gets information about network.
Gets information about phone status (number, IMEI, etc.).
Gets information about APN settings.
Gets information about installed apps.
Adds tasks to the system scheduler.
Displays its own windows over windows of other apps.

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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  1. If the mobile device is operating normally, download and install Dr.Web for Android. 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 for Android 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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