BKDR_IRCBOT.ML
Backdoor.Win32.IRCBot.ye (Kaspersky), W32/Sdbot.worm (McAfee), W32.IRCBot (Symantec), Worm/IrcBot.48640.1 (Avira)
Windows 2000, XP, Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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.
It opens a random port to allow a remote user to connect to the affected system. Once a successful connection is established, the remote user executes commands on the affected system.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
Random
557,056 bytes
PE
Yes
23 Sep 2010
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 opens a random port to allow a remote user to connect to the affected system. Once a successful connection is established, the remote user executes commands on the affected system.
Other Details
This backdoor requires its main component to successfully perform its intended routine.
SOLUTION
8.900
7.484.06
23 Sep 2010
9/23/2010 12:00:00 AM
4.154.03
01 Jan 2007
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Scan your computer with your Trend Micro product to delete files detected as BKDR_IRCBOT.ML. 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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