Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/99e55ce93392068c970384ab24a0e13d.txt
Contact: malvuln13@gmail.com
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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