This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It modifies the user's Internet Explorer home page into a certain website. This action allows the malware to point to a website which may contain malware, putting the affected computer at greater risk of malware infection. It modifies the Internet Explorer Zone Settings.
Arrival Details
This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This worm adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JSEFile\DefaultIcon
{Default} = "%System%\imageres.dll,-72"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JSEFile
FriendlyTypeName = "%System%\shell32.dll,-30596"
Propagation
This worm drops the following copy(ies) of itself in all removable drives:
- {Drive Letter}:\SAM_17122.JPG.jse
Web Browser Home Page and Search Page Modification
This worm modifies the user's Internet Explorer home page to the following websites:
- https://www.{BLOCKED}e.es/#output=search&sclient=psy-ab&q=fiverdolly+28056
It modifies the Internet Explorer Zone Settings.
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Delete this registry value
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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\Classes\JSEFile\DefaultIcon
- {Default} = "%System%\imageres.dll,-72"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JSEFile
- FriendlyTypeName = "%System%\shell32.dll,-30596"
To delete the registry value this malware created:
- Open Registry Editor. To do this:
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter. - In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>JSEFile>DefaultIcon - In the right panel, locate and delete the entry:
{Default} = "%System%\imageres.dll,-72" - In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>JSEFile - In the right panel, locate and delete the entry:
FriendlyTypeName = "%System%\shell32.dll,-30596" - Close Registry Editor.
Step 4
Search and delete these files
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There may be some files that are hidden. Please make sure you check the
Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
- {Drive Letter}:\SAM_17122.JPG.jse
To delete malware/grayware files:
For Windows 2000, Windows XP, and Windows Server 2003:
- Right-click Start then click Search....
- In the File name* input box, type
- {Drive Letter}:\SAM_17122.JPG.jse
- In the Look In drop-down list, select My Computer then press Enter.
- Once located, select the file then press SHIFT+DELETE to delete it.
- Repeat the said steps for all files listed.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).
For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:
- Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
- In the Search Computer/This PC input box, type:
- {Drive Letter}:\SAM_17122.JPG.jse
- Once located, select the file then press SHIFT+DELETE to delete it.
- Repeat the said steps for all files listed.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.
Step 5
Reset the Internet Explorer Home and Search pages
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To reset your Internet Explorer Home and Search Pages:
- Close all Internet Explorer windows.
- Open Control Panel. To do this:
• For Windows 2000, XP, and Server 2003, click Start>Settings>Control Panel
• For Windows Vista, 7, and Server 2008 , click Start>Control Panel, then click Network and Internet • For Windows 8, 8.1, and Server 2012, right-click on the lower left corner of the screen, click Control Panel, then click Network and Internet - Double-click the Internet Options icon.
- In the Internet Properties window, click the Programs tab.
(Note: If you are running Internet Explorer 7 (IE7) or later, click the Advanced tab.) - Click the Reset Web Settings... button.
(Note: On IE7 to IE10, click the Reset… button. Note that by doing this, you are resetting IE back to its default settings.) - Select Also reset my home page. Click Yes.
- Click OK.
Step 6
Reset Internet privacy settings
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To reset Internet privacy settings:
- Close all Internet browser windows.
- Open Control Panel. To do this:
• For Windows 2000, XP, and Server 2003, click Start>Settings>Control Panel
• For Windows Vista, 7, and Server 2008, click Start>Control Panel, then click Network and Internet • For Windows 8, 8.1, and Server 2012, right-click on the lower left corner of the screen, click Control Panel, then click Network and Internet - Double-click Internet Options.
- In the Internet Properties window, click the Privacy tab.
- Click on the Default button to set to the default setting.
- Click OK.
Step 7
Scan your computer with your Trend Micro product to delete files detected as JS_EXJAYSEE.SMA. 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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