- Threat Encyclopedia
- Malware
- WORM_KOLAB.SMQX
Trojan.Win32.StartPage.alsj (Kaspersky), Worm:Win32/Pushbot (Microsoft)
Windows 2000, Windows XP, Windows Server 2003
Propagates via flashdrives, Propagates via instant messaging applications
This worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It drops copies of itself in removable drives. These dropped copies use the names of the folders located on the said drives for their file names.
It connects to Internet Relay Chat (IRC) servers. It executes commands from a remote malicious user, effectively compromising the affected system.
As of this writing, the said sites are inaccessible.
Varies
EXE
Yes
26 Jul 2011
Drops files, Connects to URLs/IPs, Downloads files
Arrival Details
This worm arrives via removable drives.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This worm drops the following copies of itself into the affected system:
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It creates the following folders:
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
Autostart Technique
This worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft MainUpdates = "%Application Data%\E-73473-3674-74335\msnrsmsn.exe"
Other System Modifications
This worm creates the following registry entry(ies) to bypass Windows Firewall:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Application Data%\E-73473-3674-74335\msnrsmsn.exe = "%Application Data%\E-73473-3674-74335\msnrsmsn.exe:*:Enabled:Microsoft MainUpdates"
Propagation
This worm drops copies of itself in removable drives. These dropped copies use the names of the folders located on the said drives for their file names.
It sends the following messages via instant-messaging (IM) applications:
・belas fotos nao de voce (Malicious URL)
・vakre bilder fra deg. (Malicious URL)
・hoi niet mooi fotos (Malicious URL)
・ich sag nur geile fotos. (Malicious URL)
・hey, beautiful facebook photos.. (Malicious URL)
・muy hermosas fotos no?? (Malicious URL)
・uh vos facebook photos? (Malicious URL)
・wow le tue foto bellissime (Malicious URL)
・ahoj, dobry den jste na? ... (Malicious URL)
・uh flotte fotos fra dig (Malicious URL)
・uh szep kepek rolad (Malicious URL)
・uhh, ladne zdjecia z was. (Malicious URL)
・Fotograflarinizi?? (Malicious URL)
・uh valokuva ei ole? (Malicious URL)
・woow, imagini frumoase din voi?? (Malicious URL)
・u velmi pekne fotografie od vas?(Malicious URL)
・pekne fotografie od vas? (Malicious URL)
・vackra bilder fran dig (Malicious URL)
・hoj so vase fotografije? (Malicious URL)
・u lepo slike ne? ... (Malicious URL)
・wow, fbphotos. (Malicious URL)
It sends copies of itself to target recipients using the following instant-messaging (IM) applications:
Backdoor Routine
This worm connects to any of the following Internet Relay Chat (IRC) servers:
It joins any of the following IRC channel(s):
It executes the following commands from a remote malicious user:
Download Routine
This worm connects to the following website(s) to download and execute a malicious file:
It saves the files it downloads using the following names:
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
As of this writing, the said sites are inaccessible.
NOTES:
It may also receive a link where the malware may be downloaded.
8.900
8.312.09
26 Jul 2011
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
Identify and terminate files detected as WORM_KOLAB.SMQX
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
Step 4
Search and delete this folder
Step 5
Search and delete this file
Step 6
Scan your computer with your Trend Micro product to delete files detected as WORM_KOLAB.SMQX. 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.