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Adware.Gexin.2998

Added to the Dr.Web virus database: 2018-09-25

Virus description added:

Technical information

Malicious functions:
Executes code of the following detected threats:
  • Adware.Gexin.2.origin
Gains access to the ITelephony private interface.
Network activity:
Connecting to:
  • UDP(DNS) <Google DNS>
  • TCP(HTTP/1.1) ti####.c####.l####.####.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) 1####.217.17.46:443
  • TCP(TLS/1.0) e1.im####.com:443
  • TCP sdk.o####.t####.####.com:5224
  • TCP c####.g####.ig####.com:5227
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
  • 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=###...
  • t####.c####.q####.####.com/tdata_Soq141
  • t####.c####.q####.####.com/tdata_vxj811
  • 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=####
Modified file system:
Creates the following files:
  • /data/data/####/.jg.ic
  • /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/####/file_avatar.jpg
  • /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/####/libjiagu-1518377772.so
  • /data/data/####/md5_info.xml
  • /data/data/####/multidex.version.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/####/pushsdk.db-journal
  • /data/data/####/run.pid
  • /data/data/####/showself_guide.xml
  • /data/data/####/tdata_Soq141
  • /data/data/####/tdata_Soq141.jar
  • /data/data/####/tdata_vxj811
  • /data/data/####/tdata_vxj811.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/####/_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_vxj811
  • /data/media/####/test.log
  • /data/media/####/yoh.dat
  • /data/media/####/yol.dat
  • /data/media/####/yom.dat
Miscellaneous:
Executes next 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
  • date
  • id
  • mkdir -p <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/
  • ps
  • service call iphonesubinfo 1
  • sh -c cat
  • 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>/.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/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 NjYyRjRERDE3MDZDM0QxOUE3RkI4RkU0ODgxODZGNDMxNTM3ODcwMDUx > <SD-Card>/../../../../../..<SD-Card>/.aio.dat
  • sh -c echo NjYyRjRERDE3MDZDM0QxOUE3RkI4RkU0ODgxODZGNDMxNTM3ODcwMDUx > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/aio.dat
  • sh -c echo NjZFODMyMjA3N0UxMjYzODlBRjlBMDQyQTMxRkYzQUU4OEMyRjM6RjBENEYxOkUxMUIyQg== > <SD-Card>/../../../../../..<SD-Card>/._driver.dat
  • sh -c echo NjZFODMyMjA3N0UxMjYzODlBRjlBMDQyQTMxRkYzQUU4OEMyRjM6RjBENEYxOkUxMUIyQg== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_driver.dat
  • sh -c echo Q0E2NDRENEQ4MDUxODJFRDUzQUYzRUU1MDdCQThFRDhCQTg1MkY6OTgzMTAwOjdCMkM5Qg== > <SD-Card>/../../../../../..<SD-Card>/._android.dat
  • sh -c echo Q0E2NDRENEQ4MDUxODJFRDUzQUYzRUU1MDdCQThFRDhCQTg1MkY6OTgzMTAwOjdCMkM5Qg== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_android.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 <Package Folder>/files/gdaemon_20161017 0 <Package>/com.showself.service.ShowselfGetuiService 24508 300 0
Loads the following dynamic libraries:
  • aes
  • du
  • getuiext2
  • libjiagu-1518377772
  • 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.
Gains access to geolocation.
Gains access to network information.
Gains access to telephone information (number, imei, etc.).
Gains access to information about APN settings.
Gains access to information about installed applications.
Adds tasks to the system scheduler.
Displays its own windows over windows of other applications.

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.
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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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