Javascript Dropper #1 - Gandcrab Analysis | VTI
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VTI SCORE: 100/100
Target: Windows 10 (64-bit) | windows_script_files
Classification: Dropper, Downloader, Ransomware

b4b6f6c2588001e5b95eed79faf99a92b9d9224f65af6a92e055ddfb145a1ecc (SHA256)

DOC6131166051-PDF.js

JScript

Created at 2018-03-14 01:58:00

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Notifications (2/3)

Some extracted files may be missing in the report since the total file extraction size limit was reached during the analysis. You can increase the limit in the configuration settings.

Some extracted files may be missing in the report since the maximum number of extracted files was reached during the analysis. You can increase the limit in the configuration settings.

The operating system was rebooted during the analysis because the sample installed a startup script or application for persistence.

Severity Category Operation Classification
5/5
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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5/5
OS Modifies certificate store -
  • Adds a certificate to the local "my" crab-decrypt.txt list by file.
    ...
  • Adds a certificate to the local "my" certificate trust list by file.
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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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4/5
Persistence Installs system startup script or application -
  • Adds ""C:\Users\Nd9E1FYi\AppData\RoamingqTP35.exe"" to Windows startup via registry.
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4/5
Network Associated with known malicious/suspicious URLs -
  • URL "77.244.219.151/store?steepl=aiplau&sauf=iesay" is known as malicious URL.
    ...
  • URL "77.244.219.151/eighph?soref=eezaui" is known as malicious URL.
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4/5
PE Executes dropped PE file -
2/5
Network Performs DNS request -
2/5
Network Checks external IP address -
  • Checks external IP by asking IP info service at "ipv4bot.whatismyipaddress.com/".
    ...
2/5
Network Downloads data Downloader
2/5
Network Connects to HTTP server -
2/5
PE Drops PE file Dropper
1/5
Process Creates system object -
  • Creates mutex with name "Global\PowerShell_CommandAnalysis_Lock_S-1-5-21-2172869166-1497266965-2109836178-1000".
    ...
  • Creates mutex with name "Global\pc_group=WORKGROUP&ransom_id=58de2295a283c81".
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1/5
Process Overwrites code -
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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     Exit-Icon
    

   

   

    

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