ba2950e8...7e1c | VMRay Analyzer Report
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VTI SCORE: 100/100
Dynamic Analysis Report
Classification: Ransomware, Trojan

ckoufc.exe

Windows Exe (x86-32)

Created at 2019-05-23T20:39:00

...

Remarks (1/1)

(0x2000002): The maximum VM disk space was reached. The analysis was terminated prematurely.

VMRay Threat Indicators (15 rules, 85 matches)

Severity Category Operation Count Classification
5/5
File System Encrypts content of user files 1 Ransomware
  • Encrypts the content of multiple user files. This is an indicator for ransomware.
    ...
5/5
Local AV Malicious content was detected by heuristic scan 1 -
4/5
OS Modifies Windows automatic backups 1 -
3/5
OS Disables a Windows system tool 2 -
  • Disables startup repair by executing "/C bcdedit /set {default} bootstatuspolicy ignoreallfailures".
    ...
  • Disables startup repair by executing "/C bcdedit /set {default} recoveryenabled no".
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2/5
Anti Analysis Resolves APIs dynamically to possibly evade static detection 1 -
2/5
Information Stealing Reads sensitive browser data 3 -
  • Trying to read sensitive data of web browser "Google Chrome" by file.
    ...
    • VTI Actions
  • Trying to read sensitive data of web browser "Mozilla Firefox" by file.
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  • Trying to read sensitive data of web browser "Internet Explorer / Edge" by file.
    ...
    • VTI Actions
2/5
Reputation Known suspicious file 1 Trojan
1/5
Process Creates system object 1 -
1/5
File System Modifies operating system directory 1 -
1/5
Persistence Installs system startup script or application 1 -
  • Adds "C:\WINDOWS\ckoufc.exe" to Windows startup via registry.
    ...
1/5
Masquerade Changes folder appearance 28 -
  • Folder "c:\$recycle.bin\s-1-5-18" has a changed appearance.
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  • Folder "c:\$recycle.bin\s-1-5-21-1051304884-625712362-2192934891-1000" has a changed appearance.
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  • Folder "c:\users\public" has a changed appearance.
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  • Folder "c:\users\fd1hvy\contacts" has a changed appearance.
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  • Folder "c:\users\fd1hvy\desktop" has a changed appearance.
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  • Folder "c:\users\fd1hvy\documents" has a changed appearance.
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  • Folder "c:\users\fd1hvy\downloads" has a changed appearance.
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  • Folder "c:\users\fd1hvy\favorites" has a changed appearance.
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  • Folder "c:\users\fd1hvy\links" has a changed appearance.
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  • Folder "c:\users\fd1hvy\music" has a changed appearance.
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  • Folder "c:\users\fd1hvy\onedrive" has a changed appearance.
    ...
  • Folder "c:\users\fd1hvy\pictures" has a changed appearance.
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  • Folder "c:\users\fd1hvy\saved games" has a changed appearance.
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  • Folder "c:\users\fd1hvy\searches" has a changed appearance.
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  • Folder "c:\users\fd1hvy\videos" has a changed appearance.
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  • Folder "c:\users\public\accountpictures" has a changed appearance.
    ...
  • Folder "c:\users\public\desktop" has a changed appearance.
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  • Folder "c:\users\public\documents" has a changed appearance.
    ...
  • Folder "c:\users\public\downloads" has a changed appearance.
    ...
  • Folder "c:\users\public\libraries" has a changed appearance.
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  • Folder "c:\users\public\music" has a changed appearance.
    ...
  • Folder "c:\users\public\pictures" has a changed appearance.
    ...
  • Folder "c:\users\public\videos" has a changed appearance.
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  • Folder "c:\users\fd1hvy\documents\my shapes" has a changed appearance.
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  • Folder "c:\users\fd1hvy\favorites\links" has a changed appearance.
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  • Folder "c:\users\fd1hvy\pictures\camera roll" has a changed appearance.
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  • Folder "c:\users\fd1hvy\pictures\saved pictures" has a changed appearance.
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1/5
Information Stealing Possibly does reconnaissance 2 -
  • Possibly trying to gather information about application "Skype" by file.
    ...
  • Possibly trying to gather information about application "Mozilla Firefox" by file.
    ...
    • VTI Actions
1/5
File System Modifies application directory 40 -
  • Modifies "c:\program files\common files\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\internet explorer\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\java\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files\microsoft office\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\microsoft office 15\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\mozilla firefox\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\msbuild\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\reference assemblies\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\rempl\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\uninstall information\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\unp\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows defender\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows defender advanced threat protection\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows mail\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows media player\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows multimedia platform\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows nt\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows photo viewer\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows portable devices\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows security\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windows sidebar\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files\windowspowershell\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\adobe\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\common files\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\google\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\internet explorer\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\microsoft office\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\microsoft.net\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\mozilla maintenance service\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\msbuild\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\reference assemblies\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\windows defender\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\windows mail\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\windows media player\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\windows multimedia platform\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\windows nt\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\windows photo viewer\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\windows portable devices\read_me.legacy".
    ...
    • VTI Actions
  • Modifies "c:\program files (x86)\windows sidebar\read_me.legacy".
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    • VTI Actions
  • Modifies "c:\program files (x86)\windowspowershell\read_me.legacy".
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    • VTI Actions
1/5
File System Creates an unusually large number of files 1 -
1/5
Network Connects to HTTP server 1 -
  • URL "rinugsof.host/seniorita?bs=MTUwNjg3NzM0MjM0NTtXaW5kb3dzIDEwIFBybyBVc2VyTmFtZTogRkQxSFZ5O25v cmRmb3hAdHV0YW5vdGEuY29t ".
    ...

Screenshots

Monitored Processes

Process Graph

Process Graph Legend

Sample Information

ID #660410
MD5 005a51a1f5a55228230aac915cf638c6 Copy to Clipboard
SHA1 593796cb9d2a800356787ec3ba55427ded3953ce Copy to Clipboard
SHA256 ba2950e8b3212bd8e29341b032c431130dabb11581b21839cdb1e085e6837e1c Copy to Clipboard
SSDeep 3072:y++p3g7s7MTktOEpangIzIwQ9m/cBnX/1yYcVCHkxHMaT2l+Dfv1myp85ULXuupr:y++e4MTARyzIwQ9zBX0pVCExsRl+DfpN Copy to Clipboard
ImpHash ad0a735349d382faf3a0f6f056657c73 Copy to Clipboard
Filename ckoufc.exe
File Size 183.00 KB
Sample Type Windows Exe (x86-32)

Analysis Information

Creation Time 2019-05-23 22:39 (UTC+2)
Analysis Duration 00:03:59
Number of Monitored Processes 13
Execution Successful True
Reputation Enabled True
WHOIS Enabled True
Local AV Enabled True
YARA Enabled True
Number of AV Matches 1
Number of YARA Matches 0
Termination Reason VM disk exhausted
Tags
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".
     

     

    

   

   

    

     
      

       
       
       
       
      

     
     
     
    

   

  

  

   

    
    

     Screenshot
    

    

     Expand-Icon
    

    

     Exit-Icon
    

   

   

    

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