Remove kolabc.yl - Spyware Removal Information

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Worm-Net.kolabc.yl Analysis Report

Threat Submitted On: 6/11/2008 9:25:13 PM

Threat Analysed On: 6/12/2008 2:25:13 AM

Threat Updated On: 11/16/2009 3:49:31 AM

Type : Worm-Net

Symptoms of kolabc.yl

Copies itself to other computers of the same LAN thereby infecting the whole LAN.
Copies its files to all the possible shared resources of the network.
Modifies the SYSTEM.INI and WIN.INI files and can even make itself execute at start-up.

Removal Recommended (Click here to remove automatically)

Removal Recommended

Information

Alias : net-worm.win32.kolabc.yl

Md5 Hash : [1c17759dabcfe3a53986c00500e79b94]

File Size : [Not Available]

Technical Details

Here are the Technical findings of our analysis team after analyzing this malware in detail :-

Creates the following infected Files on user's System

Note:

Delete the following Files to remove Infection

File: smsc.exe
Path : %windir%\system32
Md5Hash :1c17759dabcfe3a53986c00500e79b94 ( 48640 bytes)

File: [randomname].exe
Path : %workingdir%
Md5Hash :1c17759dabcfe3a53986c00500e79b94 ( bytes)

The following Registry Values are added to the provided Registry Keys :-

Note:

Delete the added Values from the Key to remove Infection

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions

|__ Value Added :

jda30 = "%SYSTEMDRIVE%\data\1c17759dabcfe3a53986c00500e79b94.exe"

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate

|__ Value Added :

donotallowxpsp2 = "[reg_dword, value: 00000001]"

Also creates the following legitmate Registries on user's Systems which are also created by Genuine Software :-

Note:

These Keys can be kept as they are also created by genuine Software

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile

The following Registry Values are added to the provided Registry Keys which are also created by Genuine Software :-

Note:

These Values can be left as they are also created by legitimate Software :-

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole

|__ Value Added :

enabledcom

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center

|__ Value Added :

antivirusdisablenotify

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center

|__ Value Added :

antivirusoverride

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center

|__ Value Added :

firewalldisablenotify

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center

|__ Value Added :

firewalloverride

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center

|__ Value Added :

updatesdisablenotify

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update

|__ Value Added :

auoptions

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile

|__ Value Added :

enablefirewall

Key:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile

|__ Value Added :

enablefirewall

Creates the following child process(s) on execution:

services.exe

%windir%\system32\smsc.exe

Creates the Following MUTEX(s) on user's System:-

lih

raspbfile

Copies the Following Files to Given Location :-

Copies :%workingdir%\[random name].exe

To : %windir%\system32\smsc.exe

NOTE:

1. %windir% Refers to the windows root folder. By default it is 'C:\Windows'
2. %workingdir% Refers to the current directory in which user is working.

Important: We strongly recommend that you backup the Registry before making any changes to it. Incorrect changes to the Registry can result in permanent data loss or corrupted Files. Modify the malicious\suspicious Subkeys only.

Click Here for more spywarelib.com recommended PC Security and Optimization Tools

To modify registry entries in Windows Operating System:
Follow Steps:
1. Click Start > Run
2. Type “regedit” : to open registry editor
3. Navigate to required registry Key from the Left Tree control and modify accordingly.