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List:       full-disclosure
Subject:    [FD] Backdoor.Win32.Onalf / Missing Authentication
From:       malvuln <malvuln13 () gmail ! com>
Date:       2021-01-21 3:03:23
Message-ID: CAAHK0WTJr38iZRn6D_YpsBXBA1MO4KyhF2d47bgnRVD36LCxFA () mail ! gmail ! com
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Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/ba815d409cd714c0eac010b5970f6408.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Onalf
Vulnerability: Missing Authentication
Description: WinRemoteShell (Onalf) listens for commands on TCP port
2020. Interestingly, it will only start listening once it can connect
outbound to SMTP port 25. Not much of a self respecting backdoor, as
it allows anyone to logon without requiring a password. After logon
you are greeted with Welcome to WinRemoteShell(c)Chernickevich
http://onehalf.hotmail.ru.
Type: PE32
MD5: ba815d409cd714c0eac010b5970f6408
Vuln ID: MVID-2021-0042
Disclosure: 01/20/2021


Exploit/PoC:
TELNET x.x.x.x 2020


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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
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Malware handling or the downloading of ANY Malware mentioned on this
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