WORM_GANELP.SMIA
Trojan.Win32.Agent.nlqm (Kaspersky), Worm:Win32/Ganelp.B (Microsoft)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
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 uses the Windows Task Scheduler to add a scheduled task that executes the copies it drops.
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.
TECHNICAL DETAILS
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 file(s)/component(s):
- %Program Files%\{random}\{random}
- %Windows%\Tasks\Update23.job
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %Windows% is the Windows folder, which is usually C:\Windows.)
It drops the following copies of itself into the affected system:
- %Program Files%\{random}\jusched.exe
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
It uses the Windows Task Scheduler to add a scheduled task that executes the copies it drops.
It creates the following folders:
- %Program Files%\{random}
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
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
%Program Files%\{random}\jusched.exe = "%Program Files%\{random}\jusched.exe:*:Enabled:JavaUpdate23"
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.
Download Routine
This worm connects to the following URL(s) to download its component file(s):
- {BLOCKED}io_802884.di.{BLOCKED}pic.org
- {BLOCKED}loji.{BLOCKED}-ed.net
- {BLOCKED}tp.{BLOCKED}od.com
SOLUTION
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_GANELP.SMIA
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
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.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %Program Files%\{random}\jusched.exe = %Program Files%\{random}\jusched.exe:*:Enabled:JavaUpdate23
- %Program Files%\{random}\jusched.exe = %Program Files%\{random}\jusched.exe:*:Enabled:JavaUpdate23
Step 4
Search and delete this folder
- %Program Files%\{random}
Step 5
Search and delete this file
- %Windows%\Tasks\Update23.job
Step 6
Scan your computer with your Trend Micro product to delete files detected as WORM_GANELP.SMIA. 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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