Backdoor.Win32.Delf.arjo malware suffers from an unquoted service path vulnerability.
4848209b5de294304b74fc7d5d8872c7Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/05177f77f075293ff7d58a7f2915c64f.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Backdoor.Win32.Delf.arjo
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: 05177f77f075293ff7d58a7f2915c64f
Vuln ID: MVID-2021-0371
Dropped files: F_Server.exe
Disclosure: 10/27/2021
Exploit/PoC:
C:\>sc qc FirstFantasy_Service
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: FirstFantasy_Service
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 0 IGNORE
BINARY_PATH_NAME : C:\Program Files (x86)\F_Server.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : FirstFantasy_Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
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