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0.4
 

The storm of phishing and malware attacks using the theme of the World Cup continues some months ago we registered several malicious campaigns with this theme. To diversify the attacks and attract more victims, Brazilian cybercriminals decided to invest their efforts to spread fake giveaways and fraudulent websites selling tickets for the games at very low prices, tickets that in fact do not exist.

The attacks start when a user does a simple search on Google, looking for websites selling World Cup tickets. Bad guys registered the fraudulent domain fifabr.com that is displayed among the first results as a sponsored link:

Incidents|Trojan ChePro, the CPL storm

Fabio Assolini
Kaspersky Lab Expert
Posted December 27, 12:37  GMT
Tags: Internet Banking, Malware Technologies
0.3
 

Malware using the .CPL extension is nothing new for us, but its still interesting that almost all the banking malware currently originating in Brazil is distributed in this format. It doesn't matter whether it's a drive-by download or a simple attack based on social engineering, users find themselves at the epicenter of a real CPL storm every day. We decided to look into this trend and find out why Brazilian cybercriminals now favor this approach.

CPL files are applets used in Windows Control Panel. Once executed, rundll32.exe is used to launch a wide variety of actions defined in DLLs. Among the many things it can do is invoking Control Panel applets. When Windows first loads a Control Panel item, it retrieves the address of the CPlApplet() function and subsequently uses that address to call the function and pass messages to it.

Each cybercriminal has a preferred modus operandi to distribute this kind of malware. Most of them like to put the CPL file inside a ZIP, but we have also found it inserted inside RTF files. This kind of malware belongs to the Trojan-Banker.Win32.ChePro family, first detected in Russia in October 2012.


Typical distribution of ChePro samples: inside a ZIP file

0.5
 

New trick from cybercriminals of Brazil - a suspicious message arrives to the user with a file attached named "Comprovante_Internet_Banking.rtf", translated from Portuguese it means "Receipt from Internet Banking":

Are you waiting a banking receipt via email?

Events|Discussing cybercrime laws in Sao Paulo

Fabio Assolini
Kaspersky Lab Expert
Posted August 16, 22:14  GMT
Tags: Cybercrime Legislation
0.1
 

This week I was invited to speak at the Fifth Congress on Cybercrime, an event promoted by the So Paulo State Federation of Commerce (FECOMERCIO). There were more than 1500 participants, including journalists, politicians, lawyers, security professionals, police and businessman, all of them discussing the effects of cybercrime in the country and how society is trying to tackle it.

Virus Watch|Malicious PACs and Bitcoins

Fabio Assolini
Kaspersky Lab Expert
Posted May 17, 13:58  GMT
Tags: Electronic Payments
0.2
 

Now cybercriminals from Brazil are also interested in Bitcoin currency. In order to join the horde of phishers on the lookout for the virtual currency they have applied their best malicious technique: malicious PAC on web attacks, and phishing domains.

The malicious usage of PAC (Proxy Auto-Config) among Brazilian black hats is not something new weve known about it since 2007. Generally, these kind of malicious scripts are used to redirect the victims connection to a phishing page of banks, credit cards and so on. We described these attacks in detail here. In 2012 a Russian Trojan banker called Capper also started using the same technique. When its used in drive-by-download attacks, it becomes very effective.

After registering the domain java7update.com, Brazilian criminals started attacking several websites, inserting a malicious iframe in some compromised pages:

0.4
 

Microsoft recently announced the shutdown of its popular IM client MSN Messenger, which will be replaced by Skype, but its end represents the beginning of malicious attacks posing as the installer of the software. Cybercriminals already started to use this fact in their attacks, registering malicious domains, buying sponsored links on search engines, tricking users to download and install a malware masquerade as the MSN installer.

MSN Messenger is still very popular in several countries; Microsoft informed that the service has more than 100 million users worldwide, approximately 30.5 million of them in Brazil. As an escalated migration of all users is planned, it's getting harder to find the installer of the program and this is the window of opportunity exploited by Brazilian cybercriminals aiming to infect users looking for the software.

In a simple search on Google for "MSN messenger" the first result displayed is sponsored link of a malicious domain aiming to distribute the fake installer, which is actually a Trojan banker:

Incidents|The Brazilian Phishing World Cup

Fabio Assolini
Kaspersky Lab Expert
Posted March 11, 11:19  GMT
Tags: Spam Letters, Credit Cards
0.1
 

The 2014 FIFA World Cup has already kicked off, at least for Brazilian bad guys. Next years big event in Brazil has become one of the most prominent tactics used by Latin American cybercriminals as they unleash a real avalanche of phishing messages, fraudulent prizes and giveaways, malicious domains, fake tickets, credit card cloning, banking Trojans and a lot of social engineering.

Indeed Brazil figured among the top five countries where users risk being caught offside by phishing attacks, according to a recent study conducted by RSA and released in January. The country is in fourth place, along with the UK, USA, Canada and South Africa. So it's no big surprise to find four Brazilian brands in the Top 10 most targeted on PhishTank stats.

Offers range from alleged cash prizes, trips and tickets to watch the games, while the attacks involve massive phishing mailings, and, to add spurious credibility, stars of the national soccer team have been signed up by the conmen. Heres one example featuring Neymar, the latest Brazilian hero to be dubbed the new Pel:

"Win a new car, cash prizes and tickets for the World Cup, just click and subscribe now"

0.4
 

Google Chrome users are being targeted these days by a wave of attacks that uses malicious extensions hosted in the official Chrome Web Store. The attack appears to be of Turkish origin and is using Facebook to spread. We saw users of different nationalities infected with the malicious extensions, which the cybercriminals are sending to the official store regularly, in a cat-and-mouse game.

As we already reported in March 2012, Brazilian cybercriminals were able at that time to host a malicious extension in the Chrome Web Store. Since then in June 2012 Google has changed the way users can add third party browser extensions i.e. not allowing the installation that are not hosted on the official Web Store. More recently Google removed the possibility of silent installations, which has been widely abused by third parties.

Maybe for these reasons bad guys started to concentrate their efforts to upload bad extensions to the official store. Now its the turn of Turkish cybercriminals; they were able to host several extensions there in the last few days.

Virus Watch|PimpMyWindow - Brazilian adware

Fabio Assolini
Kaspersky Lab Expert
Posted January 25, 11:13  GMT
Tags: Social Networks, Adware, Facebook
0.3
 

Brazilian cybercrime is based primarily on the spread of Trojan bankers. For some time now the countrys bad guys have been investing their efforts in new monetization schemes, the latest includes the use of adware. And the perfect place for distributing this sort of malware? Yes, thats right social networks. This is how "PimpMyWindow", an adware and click-fraud scheme that has infected several Brazilian Facebook users in recent days, works.

To spread quickly among innocent users the adware uses a "change the color of your profile" option that recently surfaced. The infected profiles are used to spread automatic messages to your Facebook contacts:

0.6
 

Introduction

This is the description of an attack happening in Brazil since 2011 using 1 firmware vulnerability, 2 malicious scripts and 40 malicious DNS servers, which affected 6 hardware manufacturers, resulting in millions of Brazilian internet users falling victim to a sustained and silent mass attack on DSL modems.

We will show how cybercriminals exploited an under-the-radar vulnerability which affected thousands of outdated DSL modems across the country. This enabled the attack to reach network devices belonging to millions of individual and business users, spreading malware and engineering malicious redirects over the course of several months. The scenario was fuelled by the widespread neglect of ISPs, blunders from hardware manufacturers, under-educated users and official apathy.

If you think the task of cleaning up victims of the DNS Changer malware was a big challenge, imagine what it would be like to deal with 4.5 million modems compromised in this attack v all of them in sunny, beautiful Brazil.