Risk
2/14/2013
09:01 AM
50%
50%

Adobe Zero-Day Attack Bypasses Sandbox

Adobe fumbles on the security front by not enabling -- by default -- technology built into its PDF Reader and Acrobat that would have blocked the current attacks.

In other words, if a recipient opens the malicious PDF, the JavaScript inside the PDF ascertains which version of Adobe Reader or Adobe Acrobat they're using, then serves up the code required to exploit that particular application. The attack code also uses return-oriented programming to disguise itself and bypass built-in ASLR and DEP defenses.

After exploiting Reader or Acrobat, the attack code installs -- or drops -- a payload file, which is a DLL file disguised as a "language bar addin." The malicious file then goes to sleep to help disguise the infection. Interestingly, FireEye said the malware is also designed to not do anything that a real language bar plug-in wouldn't do, and includes techniques designed to fool sandbox defenses that aim to spot and block malicious code.

According to Trend Micro, the malware used in the attack includes DLL files designed to run on 64-bit machines. "The people behind this threat may have included this 64-bit malware in an attempt to evade detection by anti-malware programs," according to a blog post from the company.

Trend Micro said that in the attack samples it gathered, a successful exploit results in a Trojan injector DLL file being dropped, as well as a non-malicious file named Visaform Turkey.pdf being copied onto the system, which is likely designed to hoodwink users into not realizing they've just executed a malicious file.

Security researcher and regular Metasploit contributor Eric Romang reported Wednesday that Visaform Turkey.pdf was first submitted Monday and then Tuesday to VirusTotal, where it was identified as being a malicious file that had been created just 10 days ago. Meanwhile, a command-and-control server tied to the attacks was anonymously submitted to jsunpack on Wednesday.

Those clues aside, security researchers have yet to detail, or perhaps identify, the targets of the malicious PDF attack or what types of data may have been targeted by the attackers.

Wily attackers are using shape-shifting malware to fool your defenses. Are you ready?Also in the new, all-digital Malware's Next Generation issue of Dark Reading: The shift in hacking requires a new defense mindset. (Free with registration.)

Previous
2 of 2
Next
Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2015-5084
Published: 2015-08-02
The Siemens SIMATIC WinCC Sm@rtClient and Sm@rtClient Lite applications before 01.00.01.00 for Android do not properly store passwords, which allows physically approximate attackers to obtain sensitive information via unspecified vectors.

CVE-2015-5352
Published: 2015-08-02
The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time ...

CVE-2015-5537
Published: 2015-08-02
The SSL layer of the HTTPS service in Siemens RuggedCom ROS before 4.2.0 and ROX II does not properly implement CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a different vulnerability than CVE-2014-3566.

CVE-2015-5600
Published: 2015-08-02
The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumptio...

CVE-2015-1009
Published: 2015-07-31
Schneider Electric InduSoft Web Studio before 7.1.3.5 Patch 5 and Wonderware InTouch Machine Edition through 7.1 SP3 Patch 4 use cleartext for project-window password storage, which allows local users to obtain sensitive information by reading a file.

Dark Reading Radio
Archived Dark Reading Radio
What’s the future of the venerable firewall? We’ve invited two security industry leaders to make their case: Join us and bring your questions and opinions!