TCP SACK Panics Linux Servers

The newly discovered Linux vulnerabilities, CVE-2019-11477, CVE-2019-11478, and CVE-2019-11479, affect all Linux operating systems newer than kernel 2.6.29 (released on March 2009) or above can cause a kernel panic to systems with services listening on TCP connection. This remote attack can put a server into Denial of Service (DoS) state, but remote code execution is not of concern.

SilverTerrier – 2018 Nigerian Business Email Compromise

Our latest ongoing research into the Silver Terrier Nigerian threat actors shows that attacks increased by 54 percent in 2018 as targeting of high-tech firms and manufacturers surged.
We also show how attackers are using more sophisticated tools like information stealers, remote access tools and obfuscating malware so that it’s only detected 58% of the time. Unit 42 has observed
1.1 million attacks with more than 51,000 malware samples over the four years we have been monitoring this threat actor.

Operation Comando: How to Run a Cheap and Effective Credit Card Business

In December 2018, Palo Alto Networks Unit 42 researchers identified an ongoing campaign with a strong focus on the hospitality sector, specifically on hotel reservations. Although our initial analysis didn’t show any novel or advanced techniques, we did observe strong persistence during the campaign that triggered our curiosity.

New BabyShark Malware Targets U.S. National Security Think Tanks

In February 2019, Palo Alto Networks Unit 42 researchers identified spear phishing emails sent in November 2018 containing new malware that shares infrastructure with playbooks associated with North Korean campaigns. The emails had a malicious Excel macro document attached, which when executed led to a new Microsoft Visual Basic (VB) script-based malware family which we are dubbing “BabyShark”.

Threat Brief: Understanding Domain Generation Algorithms (DGA)

One of the most important “innovations” in malware in the past decade is what’s called a Domain Generation Algorithm (“DGA”)”. While DGA has been in use for over 10 years now, it’s still a potent technique that has been a particular challenge for defenders to counter. Fortunately, there are emerging technologies now that can better counter DGAs.

menuPass Playbook and IOCs

On December 20, 2018 the US Department of Justice indicted two Chinese nationals on charges of computer hacking, conspiracy to commit wire fraud, and aggravated identity theft. The two are alleged members of a hacking group known as menuPass . The compromised organizations were located around the world in industries such as banking and finance, healthcare and medical equipment, government, aerospace, defense, telecommunications, and consumer electronics.  Unit 42 is releasing all IOCs we have associated with menuPass in an effort to provide defenders with an extensive list of their malware and attack infrastructure.

Threat Brief: Twelve Tips for the Holidays

This time every year, people all over the world get new devices. Regardless of what holiday(s) you may (or may not) celebrate, the end of the year is a time for people to give and receive some of the latest devices to come on to the market. Nothing spoils a new gadget more than having

Unit 42 Cloud Security Trends and Tips

The benefits for enterprises moving to the cloud are clear: greater flexibility, agility, scalability and cost savings. However, adopting public cloud infrastructure can also magnify security risks and compliance challenges. Unit 42’s latest report examines the latest cloud security trends and tips.

Unit 42 Vulnerability Research October 2018 Disclosures – Adobe

As part of Unit 42’s ongoing threat research, we can now disclose that Palo Alto Networks Unit 42 researchers have discovered ten vulnerabilities addressed by the Adobe Product Security Incident Response Team (PSIRT) as part of their October 2018 APSB18-30 security update release.   CVE Vulnerability Category Impact Maximum Severity Rating Researcher(s) CVE-2018-12769 Use After