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Trojan.MulDrop16.42669

Added to the Dr.Web virus database: 2021-04-12

Virus description added:

Technical Information

To ensure autorun and distribution
Sets the following service settings
  • [<HKLM>\System\CurrentControlSet\Services\PolicyAgent] 'Start' = '00000002'
Modifies file system
Creates the following files
  • %TEMP%\5yptqosq.0.cs
  • %TEMP%\5yptqosq.cmdline
  • %TEMP%\5yptqosq.out
  • %TEMP%\csc5e55.tmp
  • %TEMP%\res5e65.tmp
  • %TEMP%\5yptqosq.dll
  • %WINDIR%\.ini
  • %WINDIR%\.log
  • %WINDIR%\.xml
Deletes the following files
  • %TEMP%\res5e65.tmp
  • %TEMP%\csc5e55.tmp
  • %TEMP%\5yptqosq.pdb
  • %TEMP%\5yptqosq.out
  • %TEMP%\5yptqosq.dll
  • %TEMP%\5yptqosq.cmdline
  • %TEMP%\5yptqosq.0.cs
Network activity
Connects to
  • 'ra####.githack.net':443
TCP
  • 'ra####.githack.net':443
UDP
  • DNS ASK ra####.githack.net
Miscellaneous
Creates and executes the following
  • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\5yptqosq.cmdline"' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=9000 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=9999 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=14443 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=14444 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filteraction name=FilteraAtion1 action=block' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add rule name=Rule1 policy=qianye filterlist=Filter1 filteraction=FilteraAtion1' (with hidden window)
  • '%WINDIR%\syswow64\takeown.exe' /f <SYSTEM32>\jscript.dll' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=UDP' (with hidden window)
  • '%WINDIR%\syswow64\cacls.exe' <SYSTEM32>\jscript.dll /E /P everyone:N' (with hidden window)
  • '%WINDIR%\syswow64\takeown.exe' /f %WINDIR%\syswow64\jscript.dll' (with hidden window)
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\syswow64\jscript.dll /E /P everyone:N' (with hidden window)
  • '%WINDIR%\syswow64\takeown.exe' /f <SYSTEM32>\cscript.exe' (with hidden window)
  • '%WINDIR%\syswow64\cacls.exe' <SYSTEM32>\cscript.exe /E /P everyone:N' (with hidden window)
  • '%WINDIR%\syswow64\takeown.exe' /f %WINDIR%\syswow64\cscript.exe' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=8888 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=7777 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=6666 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=5555 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=4444 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=3333 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=2222 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=UDP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=UDP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static set policy name=qianye assign=y' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=TCP' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filterlist name=Filter1' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add policy name=qianye' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' interface ipv6 install' (with hidden window)
  • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5E65.tmp" "%TEMP%\CSC5E55.tmp"' (with hidden window)
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\syswow64\cscript.exe /E /P everyone:N' (with hidden window)
  • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Start-Sleep -Seconds 900; Restart-Computer -Force' (with hidden window)
Executes the following
  • '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -nop -exec bypass -EncodedCommand DQAKACQAUgBlAGcAawBlAHkAcABhAHQAaAAgAD0AIAAiAEgASwBDAFUAOgBcAFMAbwBmAHQAdwBhAHIAZQBcADcALQBaAGkAcAAiAA0ACgBBAGQAZAAtAFQAeQBwAGUAIAAtAFQAeQBwAGUARABlAGYAaQBuAGk...
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=9000 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=9999 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=14443 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=14444 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filteraction name=FilteraAtion1 action=block
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add rule name=Rule1 policy=qianye filterlist=Filter1 filteraction=FilteraAtion1
  • '%WINDIR%\syswow64\takeown.exe' /f <SYSTEM32>\jscript.dll
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\syswow64\cscript.exe /E /P everyone:N
  • '%WINDIR%\syswow64\cacls.exe' <SYSTEM32>\jscript.dll /E /P everyone:N
  • '%WINDIR%\syswow64\takeown.exe' /f %WINDIR%\syswow64\jscript.dll
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\syswow64\jscript.dll /E /P everyone:N
  • '%WINDIR%\syswow64\takeown.exe' /f <SYSTEM32>\cscript.exe
  • '%WINDIR%\syswow64\cacls.exe' <SYSTEM32>\cscript.exe /E /P everyone:N
  • '%WINDIR%\syswow64\takeown.exe' /f %WINDIR%\syswow64\cscript.exe
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=8888 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static set policy name=qianye assign=y
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=7777 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=TCP
  • '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\5yptqosq.cmdline"
  • '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5E65.tmp" "%TEMP%\CSC5E55.tmp"
  • '%WINDIR%\syswow64\netsh.exe' interface ipv6 install
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add policy name=qianye
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filterlist name=Filter1
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=5555 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=UDP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=UDP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=UDP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=2222 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=3333 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=4444 protocol=TCP
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=6666 protocol=TCP
  • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Start-Sleep -Seconds 900; Restart-Computer -Force

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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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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Download by serial number

  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.

Find out more about Dr.Web for Android