Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/0857f2c8541dba287d648eec17163d3f.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Hupigon.bnbb
Vulnerability: Insecure Service Path
Description: The malware creates a service with an unquoted path. Third party attackers who can place an arbitrary executable under c:\ drive can potentially undermine the integrity of the malware by having it run theirs instead with SYSTEM privs.
Type: PE32
MD5: 0857f2c8541dba287d648eec17163d3f
Vuln ID: MVID-2021-0396
Disclosure: 11/07/2021

Exploit/PoC:
C:\>sc qc com
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: com
        TYPE               : 110  WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 0   IGNORE
        BINARY_PATH_NAME   : C:\Program Files (x86)\system32R_Server\RemoteAbc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : 8008
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem


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