Backdoor.Perl.SHELLBOT.AD
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
46,817 bytes
PL
Yes
04 Feb 2020
Connects to URLs/IPs
Arrival Details
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Backdoor Routine
This Backdoor connects to any of the following IRC server(s):
- {BLOCKED}.{BLOCKED}.226.207:3210
It joins any of the following IRC channel(s):
- #z
It accesses a remote Internet Relay Chat (IRC) server where it receives the following commands from a remote malicious user:
- die - terminates itself
- mail - sends mail to a target
- cback - Execute a remote shell (/bin/sh or cmd.exe)
- dns - Resolve an address to its IP address
- port - Open a connection to a specified IP address and port
- IRC Control:
- join - join a specified channel
- part - leave a specified channel
- rejoin - leave then rejoin a specified channel
- op - grant a user an operator status
- deop - revoke a user's operator status
- voice - grant a user a voice status
- devoice - revoke a user's voice status
- msg - send a private message
- flood - send a private message for a specified number of times
- ctcpflood - send a client-to-client protocol request to a specified user or channel for a specified number of times
- ctcp - send a client-to-client protocol request to a specified user or channel
- invite - invite a user to join a specified channel
- nick - change nickname
- conecta - connect to a specified server
- send - establish a direct connection with another user
- raw - toggles raw events processing
- eval - execute specified command
- quit - disconnect from server
- portscan - Scans an IP address for the following ports:
- 1, 7, 9, 14, 20, 21, 22, 23, 25, 53, 80, 88, 110, 112, 113, 137, 143, 145, 222, 333, 405, 443, 444, 445, 512, 587, 616, 666, 993, 995, 1024, 1025, 1080, 1144, 1156, 1222, 1230, 1337, 1348, 1628, 1641, 1720, 1723, 1763, 1983, 1984, 1985, 1987, 1988, 1990, 1994, 2005, 2020, 2121, 2200, 2222, 2223, 2345, 2360, 2500, 2727, 3130, 3128, 3137, 3129, 3303, 3306, 3333, 3389, 4000, 4001, 4471, 4877, 5252, 5522, 5553, 5554, 5642, 5777, 5800, 5801, 5900, 5901, 6062, 6550, 6522, 6600, 6622, 6662, 6665, 6666, 6667, 6969, 7000, 7979, 8008, 8080, 8081, 8082, 8181, 8246, 8443, 8520, 8787, 8855, 8880, 8989, 9855, 9865, 9997, 9999, 10000, 10001, 10010, 10222, 11170, 11306, 11444, 12241, 12312, 14534, 14568, 15951, 17272, 19635, 19906, 19900, 20000, 21412, 21443, 21205, 22022, 30999, 31336, 31337, 32768, 33180, 35651, 36666, 37998, 41114, 41215, 44544, 45055, 45555, 45678, 51114, 51247, 51234, 55066, 55555, 65114, 65156, 65120, 65410, 65500, 65501, 65523, 65533
- Download a file
- Scan open ports of a specific hostname
- UDP Flooding
- Connect to an arbitrary socket
- Simultaneous IGMP, ICMP, UDP, TCP, HTTP flooding on open ports
SOLUTION
9.850
15.726.02
06 Mar 2020
15.727.00
07 Mar 2020
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Perl.SHELLBOT.AD. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:
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