TROJ_MALQLZ.A
Worm.Win32.VB.dz (Kaspersky), W32/Bactera.worm!p2p (McAfee), Trojan Horse (Symantec), W32/Dropper.DZZ (exact) (F-Prot)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware.
TECHNICAL DETAILS
7,168 bytes
EXE
Yes
13 Mar 2008
Arrival Details
This Trojan may be dropped by other malware.
Other System Modifications
This Trojan creates the following registry entry(ies) to bypass Windows Firewall:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ SharedAccess\Parameters\
FirewallPolicy\StandardProfile\ AuthorizedApplications\
List
{malware path} = "{malware path}:*:Enabled:TCP"
NOTES:
It also creates the following registry entries to disable file tracing:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\FWCFG
EnableFileTracing = 0
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\FWCFG
EnableConsoleTracing = 0
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\FWCFG
FileTracingMask = 0
It also requires the presence of the P2P application eMule to execute properly.
SOLUTION
9.200
5.883.00
08 Apr 2009
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 and note files detected as TROJ_MALQLZ.A
Step 3
Terminate a process file/s detected as TROJ_MALQLZ.A
*Note: If the detected file/s is/are not displayed in theWindows Task Manager, continue doing the next steps.
Step 4
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.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- {malware path} = "{malware path}:*:Enabled:TCP"
- {malware path} = "{malware path}:*:Enabled:TCP"
Step 5
Delete this registry key
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.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing
- FWCFG
- FWCFG
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_MALQLZ.A. 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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