Win32/IRCBot [Threat Name] go to Threat

Win32/IRCBot.AMC [Threat Variant Name]

Category	trojan,worm
Size	94440 B
Detection created	Feb 24, 2009
Detection database version	3884
Aliases	Worm:Win32/Neeris.gen!D (Microsoft)
	BackDoor-EFR.trojan (McAfee)
	Win32:Inject-XW (Avast)
	TR/Hamweq.A (Avira)
	Backdoor.SDBot.DGBA (BitDefender)

Win32/IRCBot.AMC is a worm that spreads via removable media and by exploiting the CVE-2010-2729 vulnerability.

When executed, the worm copies itself into the following location:

In order to be executed on every system start, the worm sets the following Registry entry:

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
- "lsass" = "%windir%\system\1sass.exe"

The following Registry entries are set:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\lsass]
- "(Default)" = "Service"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\lsass]
- "(Default)" = "Service"

The worm may set the following Registry entries:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List]
- "%windir%\system\1sass.exe" = "%windir%\system\1sass.exe:*:Microsoft Enabled"

The performed data entry creates an exception in the Windows Firewall program.

The worm may create the following files:

The worm may install the following system drivers (path, name):

The worm quits immediately if the user name is one of the following:

After the installation is complete, the worm deletes the original executable file.

The worm searches for computers in the local network.

It connects to remote machines and tries to exploit the CVE-2010-2729 .

If successful, the remote computer attempts to connect to the infected computer and download a copy of the worm .

The worm copies itself into the root folders of removable drives using the following name:

The following file is dropped in the same folder:

The AUTORUN.INF file contains the path to the malware executable.

Thus, the worm ensures it is started each time infected media is inserted into the computer.

Win32/IRCBot.AMC is a worm that steals sensitive information.

The worm collects the following information:

The worm attempts to send gathered information to a remote machine.

The worm acquires data and commands from a remote computer or the Internet.

The worm contains a list of (1) addresses. The IRC protocol is used.

It can execute the following operations:

The worm opens a random TCP port. An HTTP server is listening there.

The worm hides its running process.