PERL_SHELLBOT.KO
Perl/Shellbot.B trojan (Eset), Backdoor:Perl/Shellbot.S (Microsoft), Perl/Shellbot (McAfee)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This backdoor connects to Internet Relay Chat (IRC) servers. It executes commands from a remote malicious user, effectively compromising the affected system.
TECHNICAL DETAILS
15,763 bytes
Script
Yes
24 Sep 2013
Connects to URLs/IPs
Arrival Details
This backdoor may be downloaded from the following remote site(s):
- ftp://{BLOCKED}.{BLOCKED}.152.37/gj.exe
Backdoor Routine
This backdoor connects to any of the following Internet Relay Chat (IRC) servers:
- {BLOCKED}.{BLOCKED}.75.200:8443
It executes the following commands from a remote malicious user:
- TCP Flooding
- UDP Flooding
- HTTP Flooding
- Scan for unpatched Websites (via google)
- Remote Shell Command
It posts the following information to its command and control (C&C) server:
- Opened Ports
SOLUTION
9.300
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Scan your computer with your Trend Micro product to delete files detected as PERL_SHELLBOT.KO. 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 this Knowledge Base page for more information.
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