Trojan.Win32.Servstar.poa malware suffers from an unquoted service path vulnerability.
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/7588da376f496aa678cdfca4e404f38a.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Trojan.Win32.Servstar.poa
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: 7588da376f496aa678cdfca4e404f38a
Vuln ID: MVID-2021-0397
Dropped files: Random named e.g. waqqoo.exe, iigkie.exe
Disclosure: 11/07/2021
Exploit/PoC:
C:>sc qc MSUpdqtewux
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: MSUpdqtewux
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 0 IGNORE
BINARY_PATH_NAME : C:Program Filesiigkie.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Microsoft Windows Uqdateouq Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
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