Risk
2/28/2011
05:55 PM
George V. Hulme
George V. Hulme
Commentary
Connect Directly
RSS
E-Mail
50%
50%

Sophisticated Trojan Targets Some Banking Sites

S21sec, a Spanish information security firm, claims to have spotted a new Trojan with advanced infiltration and attack techniques.

S21sec, a Spanish information security firm, claims to have spotted a new Trojan with advanced infiltration and attack techniques.This Trojan, named Tatanga, like most banking Trojan, possesses man-in-the-browser capabilities, can inject malicious HTML code into many popular browser types. According to S21sec, the Trojan can conduct banking transactions in the background. The Trojan can display a fake balance, which the end user perceives as the real account balance, while their account is being fleeced.

"The trojan in question is rather sophisticated," the company posted in its research blog. "It is written in C++ and uses rootkit techniques to conceal its presence, though on occasion, its files are visible. The trojan downloads a number of encrypted modules (DLLs), which are decrypted in memory when injected to the browser or other processes to avoid detection by antivirus software," it continued.

Some of those libraries grab email addresses, encrypt and manage the malware's processes, remove other forms of malware on the machine, as well as block installed antivirus applications.

The Trojan can also grab user credentials during the session, including one-time-passwords. The malware relies on both technical attacks as well as social engineering tactics designed to walk users through a transfer they think is a demonstration transfer.

S21sec has a snippet of the Trojan's code on its site.

While the Trojan is currently targeting European banks, mainly in Spain, United Kingdom, Germany, and Portugal - these attacks rarely remain localized.

Unfortunately, according to the security firm, the anti-virus detection rate of this Trojan is currently very low.

For my security and technology observations throughout the day, find me on Twitter.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-6306
Published: 2014-08-22
Unspecified vulnerability on IBM Power 7 Systems 740 before 740.70 01Ax740_121, 760 before 760.40 Ax760_078, and 770 before 770.30 01Ax770_062 allows local users to gain Service Processor privileges via unknown vectors.

CVE-2014-0232
Published: 2014-08-22
Multiple cross-site scripting (XSS) vulnerabilities in framework/common/webcommon/includes/messages.ftl in Apache OFBiz 11.04.01 before 11.04.05 and 12.04.01 before 12.04.04 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors, which are not properly handled in a (1)...

CVE-2014-3525
Published: 2014-08-22
Unspecified vulnerability in Apache Traffic Server 4.2.1.1 and 5.x before 5.0.1 has unknown impact and attack vectors, possibly related to health checks.

CVE-2014-3563
Published: 2014-08-22
Multiple unspecified vulnerabilities in Salt (aka SaltStack) before 2014.1.10 allow local users to have an unspecified impact via vectors related to temporary file creation in (1) seed.py, (2) salt-ssh, or (3) salt-cloud.

CVE-2014-3587
Published: 2014-08-22
Integer overflow in the cdf_read_property_info function in cdf.c in file through 5.19, as used in the Fileinfo component in PHP before 5.4.32 and 5.5.x before 5.5.16, allows remote attackers to cause a denial of service (application crash) via a crafted CDF file. NOTE: this vulnerability exists bec...

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Three interviews on critical embedded systems and security, recorded at Black Hat 2014 in Las Vegas.