fb136c83...d3f4 | VTI
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VTI SCORE: 100/100
Dynamic Analysis Report
Classification: Downloader, Ransomware

fb136c8360d1a5ab80f61109c55c5a788aa1d8796d1e75aca8c1a762b598d3f4 (SHA256)

sstojx.exe

Windows Exe (x86-32)

Created at 2019-02-18 17:18:00

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Notifications (2/2)

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Severity Category Operation Classification
5/5
File System Encrypts content of user files Ransomware
  • Encrypts the content of multiple user files. This is an indicator for ransomware.
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3/5
Persistence Adds file to open the next time Excel is launched -
  • Adds "c:\users\ciihmnxmn6ps\appdata\roaming\microsoft\excel\xlstart\titwmvjl-decrypt.txt" to a default Excel XLStart folder
    ...
  • Adds "c:\users\ciihmnxmn6ps\appdata\roaming\microsoft\excel\xlstart\d2ca4a09d2ca4deb61a.lock" to a default Excel XLStart folder
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3/5
OS Modifies certificate store -
  • Adds a certificate to the local "my" titwmvjl-decrypt.txt list by file.
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  • Adds a certificate to the local "my" certificate trust list by file.
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3/5
Persistence Adds file to open the next time Word is launched -
  • Adds "c:\users\ciihmnxmn6ps\appdata\roaming\microsoft\word\startup\titwmvjl-decrypt.txt" to a default Word Startup folder
    ...
  • Adds "c:\users\ciihmnxmn6ps\appdata\roaming\microsoft\word\startup\d2ca4a09d2ca4deb61a.lock" to a default Word Startup folder
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3/5
Browser Reads data related to browser cookies -
3/5
Browser Reads data related to saved browser credentials -
2/5
Anti Analysis Tries to detect virtual machine -
  • Reads out system information, commonly used to detect VMs via registry. (Value "Identifier" in key "HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0").
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2/5
Browser Reads data related to browsing history -
  • Reads browsing history and related data, such as bookmarks, for "Mozilla Firefox".
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2/5
Network Associated with known malicious/suspicious URLs -
  • URL "HTTP://www.kakaocorp.link/static/imgs/amme.bmp" is known as malicious URL.
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1/5
Process Creates system object -
1/5
Hide Tracks Writes an unually large amount of data to the registry -
  • Hides 1688 byte in "HKEY_LOCAL_MACHINE\SOFTWARE\keys_data\data\private".
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1/5
File System Modifies application directory -
1/5
Anti Analysis Resolves APIs dynamically -
1/5
Process Creates process with hidden window -
  • The process "C:\Windows\system32\wbem\wmic.exe" starts with hidden window.
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1/5
File System Creates an unusually large number of files -
1/5
Network Downloads data Downloader
1/5
Network Connects to HTTP server -
Function Logfile
Download-Icon
Exit-Icon

This feature requires an online-connection to the VMRay backend.

An offline version with limited functionality is also provided.
The offline version is supported only in Mozilla Firefoxwith deactivated setting "security.fileuri.strict_origin_policy". 


    

   

   

    Before
   

   

    

     

      
       This feature requires an online-connection to the VMRay backend.
      
      

      

      An offline version with limited functionality is also provided.
      

      The offline version is supported only in Mozilla Firefoxwith deactivated setting "security.fileuri.strict_origin_policy".
     

     

    

   

   

    After
   

   

    

     

      
       This feature requires an online-connection to the VMRay backend.
      
      

      

      An offline version with limited functionality is also provided.
      

      The offline version is supported only in Mozilla Firefoxwith deactivated setting "security.fileuri.strict_origin_policy".
     

     

    

   

   

    

     
      

       
       
       
       
      

     
     
     
    

   

  

  

   

    
    

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     Expand-Icon
    

    

     Exit-Icon
    

   

   

    

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