Win32.Ransom.Conti MVID-2022-0662 Cryptography Logic Flaw

`Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022  
Original source: https://malvuln.com/advisory/99e55ce93392068c970384ab24a0e13d.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
Backup media: infosec.exchange/@malvuln  
  
Threat: Win32.Ransom.Conti  
Vulnerability: Crypto Logic Flaw  
Description: Conti ransomware FAILS to encrypt non PE files that have a ".exe" in the filename. Creating specially crafted file names successfully evaded encryption for this malware sample, others variants are unknown as they were not yet tested.  
  
E.g.   
  
Test.exe.docx  
Test.exe.pdf  
  
Tested successfully in a virtual machine environment.  
  
Family: Conti  
Type: PE32  
MD5: 99e55ce93392068c970384ab24a0e13d  
Vuln ID: MVID-2022-0662  
Disclosure: 11/25/2022  
  
Video PoC URL:  
https://www.youtube.com/watch?v=rjxCII_e6xQ  
  
Exploit/PoC:  
Create files with ".exe" within the filename.  
  
  
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