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Win32.Ransom.Conti / Crypto Logic Flaw

Table of Contents

From: malvuln <malvuln13 () gmail com>
Date: Fri, 25 Nov 2022 01:08:47 -0500

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:
Contact: malvuln13 () gmail com
Backup media:

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.



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:

Create files with ".exe" within the filename.

Disclaimer: The information contained within this advisory is supplied
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Permission is hereby granted for the redistribution of this advisory,
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the author. The author is not responsible for any misuse of the information
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of security related information or exploits by the author or elsewhere. Do
not attempt to download Malware samples. The author of this website takes
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