I-Worm.Sircam( W32.Sircam.Worm@mm, W32/SirCam@mm, Backdoor.SirCam )
SYMPTOMS:The presence of any of the registry keys or files mentioned in the technical description.
TECHNICAL DESCRIPTION:I-Worm.Sircam.A is an Internet and network worm similar to I-Worm.Magistr.A. The virus spreads through e-mail using its own SMTP routine, sending itself to addresses from the Address Book and from cache or through the shared directories.
It is transmitted through a message with a randomly chosen subject and body, in the form of a combination between the virus infection routine and a file chosen randomly from My Documents.
The original name of the file is kept, but an executable extension is added (.pif, .exe, .lnk).
Users who do not have the option to see attachment extensions activated, will only see the original extension and can be easily fooled.
The body message is as follows:
Subject: Document file name (without extension)
Hi! How are you?
I send you this file in order to have your advice
I hope you can help me with this file that I send
I hope you like the file that I send you
This is the file with the information that you ask for
See you later! Thanks
or, in Spanish:
Subject: Document file name (without extension)
Hola como estas ?
Te mando este archivo para que me des tu punto de vista
Espero me puedas ayudar con el archivo que te mando
Espero te guste este archivo que te mando
Este es el archivo con la informacion que me pediste
Nos vemos pronto, gracias.
If the attachment is opened, the worm copies itself in the system directory under the name scam32.exe. It also copies itself into the directory "Recycled" under the name sirc32.exe, which is a hidden file. Then the virus creates the following three keys in the Windows Registry:
with the value Driver32 = %System%\scam32.exe to be accessed when Windows starts, and:
with the value C:\Recycled\sirc32.exe "%1" %*" for the routine infection to be executed before any other EXE file.
If the virus finds network shared directories, it will try to copy itself into the local Windows directory under the name rundll32.exe. The original file is renamed as run32.exe. If the worm succeeds, it will modify the autoexec.bat file by introducing a new line which will allow it to execute the file previously saved in the Windows directory.
As a "signature" the author added the following strings in the virus in an encrypted form:
[SirCam Version 1.0 Copyright 2001 2rP Made in / Hecho en - Cuitzeo, Michoacan Mexico]
- It sends randomly, as attachment with the viral code, one of the infected system files at the e-mail addresses from the Address Book.
- On a random algorithm (one in 20 infected systems), it deletes all files and directories on the root directory C:\. This happens on oct. 16 of every year, on the systems using the D/M/Y format for standard date. If the attached file (that generated the infection) contains FA2 without being followed by sc, this destructive action happens regardless of date format.
- It slows system performances in one of 50 cases, multiplying a .txt file c:\recycled\sircam.sys
- I-Worm.Sircam.A sends confidential information too: it might chose one of your extremely confidential files to attach to its viral code and send to your contacts from the Address Book.
Removal instructions:The BitDefender Virus Analyse Team has releasead a free removal tool for this particular virus.
Important: You will have to close all applications before running the tool (including the antivirus shields) and to restart the computer afterwards. Additionally you'll have to manually delete the infected files located in archives and the infected messages from your mail client.
The BitDefender SirCamRem.exe tool does the following:
To prevent the virus from replicating itself from infected machines to clean machines, you should try to disinfect all computers in the network before rebooting any of them, or unplug the network cables.
If you are running Windows 95/98/Me you will have to apply the following patch provided by Microsoft to stop the virus from using the "Share Level Password" Vulnerability.
You may also need to restore the affected files.
Notice for Windows 95 users: If the programs don't open anymore after you
run the tool, please click here to download a special registry repair tool. In order to fix the situation, save the file exerep.reg to your hard disk and execute it.
ANALYZED BY:Costin Ionescu BitDefender Virus Researcher
Bitdefender e-Guides Series
The Bitdefender e-Guides series is a learning initiative aiming to provide the Bitdefender reader and user community with valuable information about e-threats and the security issues of the IT&C realm, while also offering practical advice and feasible solutions to their on-line defense needs. The Bitdefender security analysts share their knowledge in malware prevention, identification and annihilation, with an emphasis on on-line privacy and different technologies, countermeasures and cybercrime prevention methods.
Covering topics that range from kids and family's on-line protection, safe social networking and preventing data safety breaches to securing enterprise environments, the e-Guides series is intended for a broad audience of small organizations and individual users concerned about the safety and integrity of their networks and systems. The e-Guides also address issues pertaining to the daily activity of IT&C Systems Security Managers, System and Network Administrators, Security Technology Developers, Analysts, and Researchers.
Safe Blogging Guide
Tips and tricks on how to keep your blog and your identity safe
Blogging is one of the most popular forms of written expression on the web, with more than 150 million indexed blogs worldwide. While regular readers are looking for pieces of information and articles, cyber-crooks take a different interest in them. Finding private information and getting cheap storage space for their malware campaigns are only two of the multitude of users they may subject your blog to.
This material covers the basic guidelines for safe blogging and is especially focused on individual blogs that are either self-hosted or provided as a service by major blog providers.
Securing Wireless Networks Guide
Tips and tricks on how to shield your home network from intruders
This document is intended for computer users who have deployed or plan to deploy a home wireless network. At a time when wireless communication has become a significant part of our lives, cyber-criminals try to exploit every security breach in the wireless configuration in order to intercept traffic or use the internet connection for illegal purposes.
The following guide will teach you the best practices when using unsecured wireless networks, as well as how to properly configure your home router or access point to prevent others from abusing your network.
Protecting Children On-line Guide
How to secure and defend the digital experience of your kids
This document is intended for family, parents and teachers and its purpose is to help secure the digital activities of kids and teens. In an age when the mass production and accessibility of computers have turned these devices into regular family or household commodities, children get familiar with PCs and Internet from a very fresh age. Despite its obvious communication-related benefits, the WWW can also be a hazardous place for kids, with e-threats directly targeting their age group and their home or school computers.
This e-Guide covers the main risks and dangers for kids on-line, such as cyber-bulling, exposure to inappropriate content, on-line addiction and other harmful online actions, while also focusing on topics such as malware, phishing, ID theft and spam, to which teenagers, just as any other Internet users, are exposed nowadays. A Safety Tips section helps parents and teachers better understand and deal with these issues in relation to the kids.
Silver Surfers On-line Safety Guide
How to protect valuable ideas and assets from cyber-hacking
This document is intended for families and senior citizens and its purpose is to help them browse the web safely and enjoy their on-line activities.
At a first glance, it would appear that senior citizens are exposed to cybercrime just as much as any other inexperienced Internet user, irrespective of their age. However, as this e-Guide shows through several case studies, there are several risks and dangers targeting directly silver surfers, such as pension delivery and fallacious tax paying methods or income-related scams. Examples, tips and advice complement the case studies and provide readers with useful guidelines in their daily on-line routine.
Preventing Data Breaches Guide
How to protect valuable ideas and assets from cyber-hacking
The e-guide was designed to cover the various potential sore points of business data safety, from the matter of the network's physical integrity to the complicated mechanisms of business targeted cybercrime (e.g. banker Trojans, phishing). This material is also intended to match, though not in as much detail as a full-fledged technical description, the features of the various consumer and business oriented Bitdefender solutions to the situations in which they might come in handy to IT administrators.
Consulting this document would be useful in the process of deciding what's best for small to medium-sized networks security and a solid basis for further comparative research on this subject.
- Aggressive Advertisers Pose Privacy Risks
- Bitdefender Case Study: Kids and Online Threats
- Facebook Whitepaper
- Bitdefender Antivirus Technology
- B-HAVE ,The Road to Success
- The medium or the message? Dealing with image spam, December 2006,Virus Bulletin
- Fighting Image Spam
- Bitdefender NeuNet Antispam Technology
- Proactive security I body armor against business attacks
- Whitepaper-Emerging Threats to Business Security
- Securing the Uncertain Bitdefender's B-HAVE Proactive Technology for Defense against Versatile_Threats
- Securing E-Mail-The First Strategic Defense Line
- Virus Naming. The "Who's Who?" Dilemma
- Facebook – Another breach in the wall
- Bitdefender Active Virus Control: Proactive Protection Against New and Emerging Threats
Bitdefender E-Threats Landscape Reports
The purpose of this report is to provide a comprehensive investigation of the threats’ landscape. Bitdefender’s security experts thoroughly analyze and examine the menaces of the each semester, focusing on software vulnerabilities and exploits, different types of malware, as well as countermeasures, cyber crime prevention and law enforcement.The E-Threats Landscape Report concentrates mainly on the latest trends, but it also contains facts and data and concerning the previously investigated periods, as well as several predictions related to the upcoming semesters.This document is primarily intended for IT&C System’s Security Managers, System and Network Administrators, Security Technology Developers, Analysts, and Researchers, but it also addresses issues pertaining to a broader audience, like small organizations or individual users concerned about the safety and integrity of their networks and systems.
H2 2012 E-Threat Landscape Report - Overview
For the first half of the year, zero-day vulnerabilities played an essential role in disseminating malware with exploit packs as a favorite vector of infection. The dangerous zero-day exploit in the Java Runtime Environment (CVE-2012-4681) was documented and proof of concept was added to Metasploit, which became public knowledge before a fix was made available.
As a direct result, three billion devices running Java were vulnerable to remote code exploitation for roughly 48 hours. A second exploit hit in September and targeted Internet Explorer 9. Successful exploitation would allow remote compromise of the system with the installation of the Poison Ivy backdoor. Both zero-day exploits were used in advanced persistent attacks.
2012 saw fluctuations in the amount of junk e-mail as a proportion of e-mail traffic. The year began with a slight decrease in spam e-mails, but spam constantly gained ground towards the middle of the year. According to data gathered from the Bitdefender Antispam lab, the second half saw growth again, with small variations towards the end of 2012. The increase in the number of junk e-mails was nonetheless minor, by only 5%, leading to a rough value of 73% of the total number of e-mails sent worldwide.
Download now the full H2 2012 E Threat Landscape Report (pdf)
Download now the overview H2 2012 E Threat Landscape Executive Summary (pdf)
Download now H1 2012 E Threat Landscape Report (pdf)
Download now H1 2011 E-Threats Landscape Report - Executive Summary (pdf)
Download now H2 2011 E-Threat Landscape Report (pdf)
Download now H2 2011 E-Threat Landscape Report - Executive Summary (pdf)
Download now H2 2010 E-Threats Landscape Report - Executive Summary (pdf)
Download now H2 2010 E-Threats Landscape Report (pdf)
Download now H1 2010 E-Threats Landscape Report - Executive Summary (pdf)
Download now H1 2010 E-Threats Landscape Report (pdf)
Download now H1 2009 Malware and Spam Review Executive Summary (pdf)
Download now H1 2009 E-Threats Landscape Report (pdf)
Download now H2 2009 Malware and Spam Review (pdf)
Download now H2 2009 E-Threats Landscape Report - Executive Summary (pdf)
Download now H1 2008 E-Threats Landscape Report (pdf)
Download now H2 2008 E-Threats Landscape Report (pdf)
Who to ask? Below you have a list of all of our media representatives who are ready to answer any question you might have.
Head of Communications
+40 723 399 778
Global PR Manager
+40 731 496 792