Attacks/Breaches
4/11/2012
11:06 AM
50%
50%

Apple, Kaspersky Attack Massive Mac Trojan

Free Flashback Trojan detection and removal tools introduced for Mac users as bot counts drop.

What may have been the largest known botnet made up of Apple Macintosh computers appears to be gradually waning in activity, and Kaspersky Lab has released a free detection and removal tool, available online, for Mac users to check whether they are infected by the so-called Flashback Trojan.

In addition, Tuesday night, Apple announced on its support website that it is developing software that will remove the Flashback Trojan and that it is "working with ISPs worldwide to disable this command and control network" for the Flashback botnet.

Kaspersky Lab, which counted up to 670,000 infected OS X machines in the botnet last week, Tuesday saw just 227,493, up from 208,301 Monday. Over the weekend, Kaspersky saw a major dip in the number of active infected Macs, from a head count Friday, April 6, of 650,748, down to 248,723 Saturday, and then 237,103 Sunday.

Alex Gostev, Kaspersky's chief security expert, says the number of bots counted here are active ones, and that the numbers don't reflect the total number of infected machines. Kaspersky's online detection and removal tool is available for download here.

"The drop in unique bots is most likely caused by efforts on the DNS [domain name system) levels. For example, a certain DNS could ban access to Flashback domains, which stops users from connecting to the malicious C&C servers, as well as our sinkhole," Gostev says.

But the floodgates have been opened for targeting Macs, and security experts say this is only the beginning. "With more than 100 million Mac OS X users globally, we expect future threats to arise--we've already seen them increase, with attacks such as DNSChanger, Fake AV/Scareware, and the most recent version of the Flashback Trojan/Flashfake botnet. The spike in attacks started in September 2011 and has reached its highest peak in March 2012," Gostev says. "Cybercriminals recognize Mac OS X is gaining market share, especially in developed countries, and we expect them to continue to create ways to infect users."

Read the rest of this article on Dark Reading.

When picking endpoint protection software, step one is to ask users what they think. Also in the new, all-digital Security Software: Listen Up! issue of InformationWeek: CIO Chad Fulgham gives us an exclusive look at the agency's new case management system, Sentinel; and a look at how LTE changes mobility. (Free registration required.)

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
20 Questions to Ask Yourself before Giving a Security Conference Talk
Joshua Goldfarb, Co-founder & Chief Product Officer, IDDRA,  10/16/2017
Printers: The Weak Link in Enterprise Security
Kelly Sheridan, Associate Editor, Dark Reading,  10/16/2017
Hyatt Hit With Another Credit Card Breach
Dark Reading Staff 10/13/2017
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Security Vulnerabilities: The Next Wave
Just when you thought it was safe, researchers have unveiled a new round of IT security flaws. Is your enterprise ready?
Flash Poll
The State of Ransomware
The State of Ransomware
Ransomware has become one of the most prevalent new cybersecurity threats faced by today's enterprises. This new report from Dark Reading includes feedback from IT and IT security professionals about their organization's ransomware experiences, defense plans, and malware challenges. Find out what they had to say!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2017-0290
Published: 2017-05-09
NScript in mpengine in Microsoft Malware Protection Engine with Engine Version before 1.1.13704.0, as used in Windows Defender and other products, allows remote attackers to execute arbitrary code or cause a denial of service (type confusion and application crash) via crafted JavaScript code within ...

CVE-2016-10369
Published: 2017-05-08
unixsocket.c in lxterminal through 0.3.0 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (preventing terminal launch), or possibly have other impact (bypassing terminal access control).

CVE-2016-8202
Published: 2017-05-08
A privilege escalation vulnerability in Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) releases earlier than v7.4.1d and v8.0.1b could allow an authenticated attacker to elevate the privileges of user accounts accessing the system via command line interface. With affected version...

CVE-2016-8209
Published: 2017-05-08
Improper checks for unusual or exceptional conditions in Brocade NetIron 05.8.00 and later releases up to and including 06.1.00, when the Management Module is continuously scanned on port 22, may allow attackers to cause a denial of service (crash and reload) of the management module.

CVE-2017-0890
Published: 2017-05-08
Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerability in the search module. To be exploitable a user has to write or paste malicious content into the search dialogue.