8b0a5fb1...7d7d | VMRay Analyzer Report
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VTI SCORE: 100/100
Dynamic Analysis Report
Classification: Ransomware, Trojan

DfyLx.exe

Windows Exe (x86-64)

Created at 2019-06-02T09:39:00

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Remarks (1/1)

(0x2000004): The operating system was rebooted during the analysis because the sample installed a startup script, task or application for persistence.

VMRay Threat Indicators (11 rules, 22 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 3 -
5/5
Reputation Known malicious file 1 Trojan
  • File "C:\Users\FD1HVy\Desktop\DfyLx.exe" is a known malicious file.
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4/5
Injection Writes into the memory of another running process 2 -
  • "c:\users\fd1hvy\desktop\dfylx.exe" modifies memory of "c:\windows\system32\sihost.exe".
    ...
  • "c:\users\fd1hvy\desktop\dfylx.exe" modifies memory of "c:\windows\system32\svchost.exe".
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4/5
Injection Modifies control flow of another process 9 -
  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\system32\sihost.exe".
    ...
  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\system32\svchost.exe".
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  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\system32\taskhostw.exe".
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  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\systemapps\shellexperiencehost_cw5n1h2txyewy\shellexperiencehost.exe".
    ...
  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\systemapps\microsoft.windows.cortana_cw5n1h2txyewy\searchui.exe".
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  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\system32\runtimebroker.exe".
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  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\program files\microsoft office\root\office16\msoia.exe".
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  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\system32\apphostregistrationverifier.exe".
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  • "c:\users\fd1hvy\desktop\dfylx.exe" creates thread in "c:\windows\system32\dllhost.exe".
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3/5
File System Possibly drops ransom note files 1 Ransomware
  • Possibly drops ransom note files (creates 34 instances of the file "RyukReadMe.txt" in different locations).
    ...
2/5
Anti Analysis Resolves APIs dynamically to possibly evade static detection 1 -
1/5
Process Creates process with hidden window 1 -
  • The process "C:\WINDOWS\System32\cmd.exe" starts with hidden window.
    ...
1/5
Process Creates a page with write and execute permissions 1 -
  • Allocates a page in a foreign process with "PAGE_EXECUTE_READWRITE" permissions, often used to dynamically unpack code.
    ...
1/5
Persistence Installs system startup script or application 1 -
  • Adds "C:\Users\FD1HVy\Desktop\DfyLx.exe" to Windows startup via registry.
    ...
0/5
Process Enumerates running processes 1 -

Screenshots

Monitored Processes

Process Graph

Process Graph Legend

Sample Information

ID #670771
MD5 31bd0f224e7e74eee2847f43aae23974 Copy to Clipboard
SHA1 92e331e1e8ad30538f38dd7ba31386afafa14a58 Copy to Clipboard
SHA256 8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d Copy to Clipboard
SSDeep 3072:2qeriftL/WSo1vDb53j/8WGUzaqVh4LI8zQpn:2trA/WSo1rl3ALrlHQpn Copy to Clipboard
ImpHash 21de032c4f956048aee1e04ac102bfbd Copy to Clipboard
Filename DfyLx.exe
File Size 170.50 KB
Sample Type Windows Exe (x86-64)

Analysis Information

Creation Time 2019-06-02 11:39 (UTC+2)
Analysis Duration 00:04:26
Number of Monitored Processes 14
Execution Successful True
Reputation Enabled True
WHOIS Enabled True
Local AV Enabled True
YARA Enabled True
Number of AV Matches 3
Number of YARA Matches 0
Termination Reason Timeout
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".
     

     

    

   

   

    

     
      

       
       
       
       
      

     
     
     
    

   

  

  

   

    
    

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     Expand-Icon
    

    

     Exit-Icon
    

   

   

    

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