News - Malware & Hoax - TG Soft Cyber Security Specialist

20/09/2003

Swen.A

New Swen.A (Gibe) worm, it comes through email spam and pretends to be a fake Microsoft Patch.

Name: I-WORM.Swen.A

AKA: Gibe.C

Type: Internet Worm

Size: 106496 bytes

Platform: Win 95/98/ME/NT/2000/XP

Description:

This worm comes attached to messages of this kind:

Message subject:
Last Microsoft Upgrade
New Microsoft Critical Upgrade
or with other subjects.

Message bodies could also be differents, this is an example of a I-WORM.Swen.A body:

Microsoft	All Products \| Support \| Search \| Microsoft.com Guide
	Microsoft Home

Microsoft Consumer

this is the latest version of security update, the "September 2003, Cumulative Patch" update which eliminates all known security vulnerabilities affecting MS Internet Explorer, MS Outlook and MS Outlook Express as well as three newly discovered vulnerabilities. Install now to maintain the security of your computer from these vulnerabilities, the most serious of which could allow an attacker to run executable on your computer. This update includes the functionality = of all previously released patches.

System requirements	Windows 95/98/Me/2000/NT/XP
This update applies to	MS Internet Explorer, version 4.01 and later MS Outlook, version 8.00 and later MS Outlook Express, version 4.01 and later
Recommendation	Customers should install the patch = at the earliest opportunity.
How to install	Run attached file. = Choose Yes on displayed dialog box.
How to use	You don't need to do = anything after installing this item.

Microsoft Product Support Services and Knowledge Base articles can be found on the Microsoft Technical Support web site. = For security-related information about Microsoft products, please = visit the Microsoft Security Advisor web site, = or Contact Us.

Thank you for using Microsoft products.

Please do not reply to this message. = It was sent from an unmonitored e-mail address and we are unable = to respond to any replies.

The names of the actual companies and = products mentioned herein are the trademarks = of their respective owners.

	Contact Us \| Legal \| TRUSTe
	©2003 Microsoft Corporation. All rights reserved. Terms of Use \| Privacy Statement \| Accessibility

The attached file could have random names, here're some examples: Q114946.exe, UPGRADE.EXE,
Q992761.EXE (Patch , Upgrade, Update, Installer, Install, Pack, Q).

Some messages use the IFRAME technique to be executed automatically, we strongly recommend to upgrade your
Outlook Express version to the latest version available (>6.0 recommended)

Once executed, the worm creates a random-named file inside Windows's system folder, and edits some registry keys to execute that file
at every PC startup.
It aIso creates the following files: Germs0.dbv, Swen1.dat, %PC_NAME%.bat

Periodically, a MAPI32 Exception error pops out, asking for your email credentials.
The user musn't fill in any data, but should only click on CANCEL.

Swen.A worm sometimes create .ZIP or .RAR files containing the worm, and could also spread itself through LAN, Kazaa and mIRC.

Analysis made by: Eng. G. Tonello

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Necessary 5

The necessary cookies help make the website usable by enabling basic functions such as page navigation. The website cannot function properly without these cookies.

ASP.NET_SessionId [x2]
Preserve the user's status on the different pages of the site.

Expiration: Session

Type: HTTP

cookie_accettati [x1]
Stores the user's cookie consent status for the current domain

Expiration: 1 year/s

Type: HTTP

lang [x1]
Stores the selected language

Expiration: 1 year/s

Type: HTTP

ASPSESSIONIDxxxx
Technical cookie for the management of interactions with the user

Expiration: Session

Type: HTTP

Necessary (for use and access to specific areas) 2

Cookie necessary to make certain specific contents usable such as: access to protected areas of the site, sending requests or subscribing to newsletters. The specific features of these sections will not be usable without this cookie.

_GRECAPTCHA [x1]
Necessary to verify human interaction.
Used to send quotes, access restricted areas and all those points where security is a fundamental component.

Expiration: 6 month/s

Type: HTTP

cookie_google [x1]
Flag for acceptance of Google reCAPTCHA cookies

Expiration: 6 month/s

Type: HTTP

Accept the reCAPTCHA Terms of Service:
By accessing or using the reCAPTCHA APIs, you agree to the Google APIs Terms of Use, Goodle Terms of Use, and to the Additional Terms below. Please read and understand all applicable terms and police before accessing the APIs.

reCAPTCHA Terms of Service:
You acknowledge and understand that the reCAPTCHA API works by collecting hardware and software information, such as device and application data and the results of integrity checks, and sending that data to Google for analysis. Pursuant to Section 3(d) of the Google APIs Terms of Service, you agree that if you use the APIs that it is your responsibility to provide any necessary notices or consents for the collection and sharing of this data with Google.

Data collected by reCAPTCHA:
The reCAPTCHA algorithm will check for the presence of a Google cookie (usually _ga)
If not present, a specific reCAPTCHA cookie will be added to the browser of the user and will be captured - pixel by pixel - a complete snapshot image of the user's browser window at that time.
Some of the browser and user information currently collected includes:
All cookies placed by Google in the last 6 months
How many mouse clicks did you make on that screen (or touch if on a touch device)
The CSS information for that page
The exact date
The language in which the browser is set
Any plug-in installed in the browser
All Javascript objects

Swen.A

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