Threat Roundup for March 27 to April 3

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 27 and April 3. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristic...

Threat Roundup for March 20 to March 27

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 20 and March 27. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...

Threat Roundup for March 13 to March 20

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 13 and March 20. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...

Threat Roundup for March 6 to March 13

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 6 and March 13. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristic...

Behavioral blocking and containment: Transforming optics into protection

In today’s threat landscape—overrun by fileless malware that live off the land, highly polymorphic threats that mutate faster than traditional solutions can keep up with, human-operated attacks that adapt to what adversaries find on compromised machines, and other sophisticated threats—behavioral...

Patrick Wardle: Apple Devices Hit With Recycled macOS Malware

SAN FRANCISCO – Advanced persistent threat APT groups are hitting Apple devices with malware that has been reverse engineered and redeployed for malicious acts. This technique is complicating attribution efforts, Patrick Wardle, security researcher with Jamf, said this week during RSA Conference...

Threat Roundup for February 21 to February 28

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Feb. 21 and Feb. 28. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

Reputation Intelligence At Your Fingertips

How important is a reputation? American entertainer Will Rogers once famously said, “it takes a lifetime to build a good reputation, but you can lose it in a minute.” Our reputations are valuable commodities that establish rapport and clout among our colleagues, partners, and customers. A good...

Get Ready for the Microsoft Windows 7 EOL on January 14th

January 14, 2020, is a day cybersecurity stakeholders should pay attention to, as it marks the end of Microsoft support in Windows 7. From a security perspective, both the routine monthly security patches as well as hot fixes for attacks in the wild will not be available, effectively making any...

Are You Ready for Microsoft Windows 7 End of Support on 14th January 2020?

January 14, 2020, is a day cybersecurity stakeholders should pay attention to, as it marks the end of Microsoft support in Windows 7. From a security perspective, both the routine monthly security patches as well as hotfixes for attacks in the wild will not be available, effectively making any...

Threat Analysis Unit (TAU) Threat Intelligence Notification: DeathRansom Ransomware

During mid-November, a new ransomware named ‘DeathRansom” was found being distributed. Similar to the other variants of ransomware, it will perform the deletion of volume shadow copies to ensure all the data cannot be restored easily. After the DeathRansom performs file encryption, it will drop...

UPDATE: Sysdig Falco v0.18.0

Sysdig Falco v0.18.0 was released a while ago which I detected when I was using this tool and hence this blog. It has been some time since I last blogged about this open source behavorial activity monitor which has container support and a lot has changed in this version as well. What is Sysdig...

Threat Analysis Unit (TAU) Threat Intelligence Notification: Skidmap

Hijacking machine resources and using them to mine for cryptocurrency continues to be an attractive and lucrative target for threat actors. As we’ve continued to see this type of attack used, we’ve also seen more platforms being targeted. Seeing cryptocurrency mining malware targeting Linux and...

New version of IcedID Trojan uses steganographic payloads

This blog post was authored by @hasherezade, with contributions from @siriurz and Jérôme Segura. Security firm Proofpoint recently published a report about a series of malspam campaigns they attribute to a threat actor called TA2101. Originally targeting German and Italian users with Cobalt Strik...

CAPE - Malware Configuration And Payload Extraction

CAPE is a malware sandbox. It is derived from Cuckoo and is designed to automate the process of malware analysis with the goal of extracting payloads and configuration from malware. This allows CAPE to detect malware based on payload signatures, as well as automating many of the goals of malware...

Insights from one year of tracking a polymorphic threat

A little over a year ago, in October 2018, our polymorphic outbreak monitoring system detected a large surge in reports, indicating that a large-scale campaign was unfolding. We observed as the new threat attempted to deploy files that changed every 20-30 minutes on thousands of devices. We gave...

Threat Analysis Unit (TAU) Threat Intelligence Notification: AsyncRAT

AsyncRAT is a Remote Access Tool RAT designed to remotely monitor and control other computers through a secure encrypted connection. It is an open source remote administration tool, however, it could also be used maliciously because it provides functionality such as keylogger, remote desktop...

Threat Analysis Unit (TAU) Threat Intelligence Notification: Estemani Ransomware

Estemani Ransomware’s behavior is similar to other variants of ransomware. It will perform task kill on processes to ensure the encryption of files such as database program SQL server, perform the deletion of volume shadow copies, and disable Windows automatic startup repair to ensure all the dat...

Threat Roundup for November 1 to November 8

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Nov. 1 and Nov. 8. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Microsoft works with researchers to detect and protect against new RDP exploits

On November 2, 2019, security researcher Kevin Beaumont reported that his BlueKeep honeypot experienced crashes and was likely being exploited. Microsoft security researchers collaborated with Beaumont as well as another researcher, Marcus Hutchins, to investigate and analyze the crashes and...