DALLAS--()--The world’s most prolific phishing gang has completed a transition from using conventional phishing to massively propagating stealthy password-stealing crimeware that does not require user cooperation to surrender financial account credentials, according to a report released this week by APWG.
“Their spamming and other activities to target victims continues at high levels, implying they are finding malware distribution a more effective and profitable tactic than traditional phishing.”
APWG researchers from Afilias and Internet Identity found that while the Avalanche botnet infrastructure had been used to launch conventional spam-based phishing attacks over the past two years, the phishing has been replaced with a scheme that infects users’ PCs with the potent Zeus Trojan, a powerful banking credential-stealing malware.
The phishing syndicate had been successfully using the Avalanche botnet for conventional spam-based phishing attacks that provoke a user to visit a counterfeit website and enter or his or her credentials. This Avalanche phishing accounted for two-thirds of all phishing attacks observed worldwide in the second in late 2009.
But the Avalanche infrastructure was involved in just four conventional phishing attacks in the month of July 2010. Instead, the Avalanche-based syndicate ramped up a concerted campaign of crimeware propagation to fool victims into receiving the Zeus crimeware and infecting their PCs with it. Avalanche has been sending billions of faked messages from tax authorities such as the IRS, false alerts/updates purporting to be from popular social networking sites, and other lures. These lures take victims to drive-by download sites, where the criminals infect vulnerable machines.
Once a machine is infected, the criminals can remotely access it, steal the personal information stored on it, and intercept passwords and online transactions. The criminals can even log into the victim’s machine to perform online banking transactions.
"While the cessation of phishing operations by the Avalanche phishing group is great news for the anti-phisihing community, their shift to the nearly exclusive distribution of Zeus malware is an ominous development in the e-crime landscape," said study co-author Rod Rasmussen. "Their spamming and other activities to target victims continues at high levels, implying they are finding malware distribution a more effective and profitable tactic than traditional phishing.”
Co-author Greg Aaron added: “The Avalanche criminals recently rented a large botnet called Cutwail to send out massive amounts of spam lures. Those spams led unsuspecting Internet users to Zeus crimeware hosted on the Avalanche botnet. So this is a good example of how e-criminals don’t work in isolation, and often use multiple tools – spam, malware, botnets, and phishing – to do their work.”
Highlights of the Global Phishing Survey: Trends and Domain Name Use in 1H2010 also include:
- The Avalanche phishing gang migrated to distributing the dangerous Zeus crimeware
- Average uptime of all phishing attacks rose from previous periods
- Phishers continue to use subdomain services to host and manage phishing sites
- Amount of Internet domain names and numbers used for phishing was steady as number of registered domain names has grown
The complete report is available here: http://www.antiphishing.org/reports/APWG_GlobalPhishingSurvey_1H2010.pdf
About the APWG
The APWG, founded in 2003 as the Anti-Phishing Working Group, is a global industry, law enforcement, and government coalition focused on eliminating the identity theft and fraud that result from the growing problem of phishing, email spoofing, and crimeware. Membership is open to qualified financial institutions, online retailers, ISPs, the law enforcement community and solutions providers. There are more than 1,800 companies, government agencies and NGOs participating in the APWG and more than 3,600 members. The APWG's Web sites – www.apwg.org and education.apwg.org - offer the public, industry and government agencies information about phishing and email fraud, including identification and promotion of pragmatic technical solutions that provide immediate protection. APWG's corporate sponsors are as follows: AT&T(T), Able NV, Afilias Ltd., AhnLab, AVG Technologies, BillMeLater, BBN Technologies, Booz Allen Hamilton, Blue Coat, BlueStreak, BrandMail, BrandProtect, Bsecure Technologies, Check Point Software Technologies, Cisco (CSCO), Clear Search, Cloudmark, Cyveillance, DigiCert, DigitalEnvoy, DigitalResolve, Digital River, Easy Solutions, eBay/PayPal (EBAY), eCert, Entrust (ENTU), eEye, ESET, Fortinet, FraudWatch International, FrontPorch, F-Secure, Goodmail Systems, GlobalSign, GoDaddy, Goodmail Systems, GuardID Systems, HomeAway, Hauri, Huawei Symantec, IronPort, HitachiJoHo, ING Bank, Iconix, Internet Identity, Internet Security Systems, Intuit, IOvation, IronPort, IS3, IT Matrix, Kaspersky Labs, Kindsight, Lenos Software, LightSpeed Systems, MailFrontier, MailShell, MarkMonitor, M86Security, McAfee (MFE), MasterCard, MessageLevel, Microsoft (MSFT), MicroWorld, Mirapoint, MySpace (NWS), MyPW, MX Logic, NameProtect, National Australia Bank (ASX: NAB) Netcraft, NetStar, Network Solutions, NeuStar, Nominum, Panda Software, Phoenix Technologies Inc. (PTEC), Phishme.com, Phorm, Planty.net, Prevx, The Planet, SIDN, SalesForce, Radialpoint, RSA Security (EMC), RuleSpace, SecureBrain, Secure Computing (SCUR), S21sec, Sigaba, SoftForum, SoftSecurity, SOPHOS, SquareTrade, SurfControl, SunTrust, Symantec (SYMC), TDS Telecom, Telefonica (TEF), Trend Micro (TMIC), Tricerion, TriCipher, TrustedID, Tumbleweed Communications (TMWD), Vasco (VDSI), VeriSign (VRSN), Visa, Wal-Mart (WMT), Websense Inc. (WBSN) and Yahoo! (YHOO), zvelo and ZYNGA.
