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Trojan.DownLoader25.866
Added to the Dr.Web virus database:
2017-06-17
Virus description added:
2017-06-16
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '212683d986fb740ad6a40184df48e604' = '"%TEMP%\server.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '212683d986fb740ad6a40184df48e604' = '"%TEMP%\server.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\server.exe' = '%TEMP%\server.exe:*:Enabled:server.exe'
Executes the following:
'%TEMP%\server.exe'
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\server.exe" "server.exe" ENABLE
'%TEMP%\_av_iup.tm~a02920\instup.exe' /edition:12 /ga_clientid:b0943a25-ac3c-42ad-bebb-bda7253322eb /guid:daa49d8d-001b-43b4-ac63-a2175d4e6cdc /prod:ais /sfx:lite /sfxstorage:%TEMP%\_av_iup.tm~a02920
'%TEMP%\nigga.exe'
'%TEMP%\Setup FR.exe'
Modifies file system:
Creates the following files:
%TEMP%\server.exe
%ALLUSERSPROFILE%\Application Data\AVAST Software\Avast\avast5.ini
%ALLUSERSPROFILE%\Application Data\AVAST Software\Persistent Data\Avast\Logs\event_manager.log
%TEMP%\nigga.exe
%TEMP%\Setup FR.exe
%ALLUSERSPROFILE%\Application Data\AVAST Software\Persistent Data\Avast\Logs\Setup.log
Deletes the following files:
%TEMP%\_av_iup.tm~a02920\prod-pgm.vpx.dld
%TEMP%\_av_iup.tm~a02920\servers.def.vpx.dld
Network activity:
Connects to:
'j2######.iavs9x.u.avast.com':80
'j8######.iavs9x.u.avast.com':80
'w0######.iavs9x.u.avast.com':80
'r4######.iavs9x.u.avast.com':80
'd0######.iavs9x.u.avast.com':80
'n9######.iavs9x.u.avast.com':80
'ss#.####le-analytics.com':443
'l5######.iavs9x.u.avast.com':80
'p7######.iavs9x.u.avast.com':80
'x2######.iavs9x.u.avast.com':80
'au##.#f.avast.com':443
'localhost':1177
'www.go#####analytics.com':80
'v7#####.stats.avast.com':80
'c3######.iavs9x.u.avast.com':80
's6######.iavs9x.u.avast.com':80
'f5######.iavs9x.u.avast.com':80
'k2######.iavs9x.u.avast.com':80
'h9######.iavs9x.u.avast.com':80
TCP:
HTTP GET requests:
http://j8######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://d0######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://j2######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://j2######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://s6######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://p7######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://n9######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://f5######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://l5######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
http://k2######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://h9######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://www.go#####analytics.com/collect?an#############################################################################################################################################
http://c3######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://s6######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://w0######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://r4######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://f5######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
http://x2######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
HTTP POST requests:
http://v7#####.stats.avast.com/cgi-bin/iavsevents.cgi
UDP:
DNS ASK j2######.iavs9x.u.avast.com
DNS ASK j8######.iavs9x.u.avast.com
DNS ASK w0######.iavs9x.u.avast.com
DNS ASK r4######.iavs9x.u.avast.com
DNS ASK d0######.iavs9x.u.avast.com
DNS ASK n9######.iavs9x.u.avast.com
DNS ASK ss#.####le-analytics.com
DNS ASK l5######.iavs9x.u.avast.com
DNS ASK p7######.iavs9x.u.avast.com
DNS ASK x2######.iavs9x.u.avast.com
DNS ASK sh#####d.ff.avast.com
DNS ASK au##.#f.avast.com
DNS ASK www.go#####analytics.com
DNS ASK v7#####.stats.avast.com
DNS ASK c3######.iavs9x.u.avast.com
DNS ASK s6######.iavs9x.u.avast.com
DNS ASK f5######.iavs9x.u.avast.com
DNS ASK k2######.iavs9x.u.avast.com
DNS ASK h9######.iavs9x.u.avast.com
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: ''
Curing recommendations
Windows
macOS
Linux
Android
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 .
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.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
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.
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.
Find out more about Dr.Web for Android
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