Stay Ahead of Cyber Threats – Daily Security Insights, Powered by AI
In this intrusion from May 2022, we observed a domain-wide compromise that started from a malware ridden Excel document containing the never-dying malware, Emotet.
The post-exploitation started very soon after the initial compromise. The threat actors began enumerating the network once Emotet deployed a Cobalt Strike beacon on the beachhead host.…
A ransomware victim called in the BlackBerry Incident Response (IR) team during this year’s 4th of July holiday weekend. We quickly realized we were investigating an attack by a previously unknown group, calling themselves “MONTI.” They encrypted nearly 20 user hosts along with a multi-host VMware ESXi cluster that brought down over 20 servers.…
Beginning with macOS 10.12 (Sierra), Apple introduced a key change to how logging was done on their systems. This new logging system replaced common Unix logs with macOS Unified Logs. These logs can provide forensic investigators a valuable artifact to aid in investigating macOS systems or other Apple devices.…
Summary
Actions to take today to mitigate cyber threats from ransomware:
• Prioritize and remediate known exploited vulnerabilities.• Train users to recognize and report phishing attempts.• Enable and enforce multifactor authentication.
Note: This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors.…
Play is a new ransomware that takes a page out of Hive and Nokoyawa’s playbook. The many similarities among them indicate that Play, like Nokoyawa, are operated by the same people.
In July, we investigated a spate of ransomware cases in the Latin American region that targeted government entitles, which was initially attributed to a new player known as Play ransomware.…
Corporate espionage, also known as industrial espionage, is espionage conducted for commercial or financial purposes. One of the common misconceptions is that espionage is affecting only large corporations or government entities, but it is more common than expected. In this article, we provide an analysis of one such exfiltration and explain why these attacks are on the rise. …
By Securonix Threat Labs, Threat Research: D. Iuzvyk, T. Peck, O. Kolesnikov
IntroductionThe Securonix Threat research team has recently identified a unique sample of a persistent Golang-based attack campaign tracked by Securonix as GO#WEBBFUSCATOR. The new campaign incorporates an equally interesting strategy by leveraging the infamous deep field image taken from the James Webb telescope and obfuscated Golang programming language payloads to infect the target system with the malware.…
Several organizations, big or small, have been facing threats from Threat Actors (TAs) at a greater frequency than ever before. An organization’s primary danger remains losing access to their systems and data, which is further aggravated by the threat of TAs leaking the data if ransom requests are not fulfilled or the victim reaches out to law enforcement authorities. …
A new piece of ransomware written in the Go language has been targeting healthcare and education enterprises in Asia and Africa. This ransomware is called Agenda and is customized per victim.
We recently discovered a new piece of targeted ransomware that was created in the Go programming language and that explicitly targeted one of our customers.…
Summary
Actions for ZCS administrators to take today to mitigate malicious cyber activity:
• Patch all systems and prioritize patching known exploited vulnerabilities.
• Deploy detection signatures and hunt for indicators of compromise (IOCs).
• If ZCS was compromised, remediate malicious activity.
Updated November 10, 2022: This product was written by the Cybersecurity and Infrastructure Security Agency (CISA) and the Multi-State Information Sharing and Analysis Center (MS-ISAC) with contributions by the Federal Bureau of Investigation (FBI).…
As we continue to monitor the cyber situation in Ukraine, the data we are seeing shows some interesting trends. Not only has the volume of attacks continued rising throughout the war in Ukraine, the types of attacks have been varied. A common tactic of cyber criminals is to run automated exploit attempts, hitting as many possible targets as they can to see what gets a result.…
Cyble Research Labs has observed that malware written in the programming language “Go” has recently been popular among Threat Actors (TAs). This is likely due to its cross-platform functionalities and the fact that it makes reverse engineering more difficult. We have seen many threats developed using the Go language, such as Ransomware, RAT, Stealer, etc.…
The Cybereason Global Security Operations Center (GSOC) Team issues Cybereason Threat Analysis Reports to inform on impacting threats. The Threat Analysis Reports investigate these threats and provide practical recommendations for protecting against them.…
Onyx ransomware was initially identified by researchers in mid-April 2022. The ransomware group uses the double extortion technique to target its victims where it exfiltrates the victim’s data, then encrypts it. If the victim cannot pay the ransom, then Threat Actors (TA) leak the victim’s data on their leak site.…
日本語 (Japanese)
Update HistoryDate Description of UpdatesAug. 10th 2022Adding clarifying details on activity involving active directory.Aug. 10th 2022Update made to the Cisco Response and Recommendations section related to MFA. Executive summaryOn May 24, 2022, Cisco became aware of a potential compromise.…DGA is one of the classic techniques for botnets to hide their C2s, attacker only needs to selectively register a very small number of C2 domains, while for the defenders, it is difficult to determine in advance which domain names will be generated and registered.
360 netlab has long focused on the research of botnet attack and defense technology, we maintain a free DGA feed and share the research results with the industry.…
This blog entry offers a technical analysis of a new SolidBit variant that is posing as different applications to lure gamers and social media users. The SolidBit ransomware group appears to be planning to expand its operations through these fraudulent apps and its recruitment of ransomware-as-a-service affiliates.…
Hive ransomware is one of the most active financially motivated threat actors of this period, adopting the current Double Extorsion model. They started their malicious activities in June of the past year, and just in a year of activity they collected a big number of victims, demonstrating the capability to hit even critical infrastructures. …
Our X-Ops teams – SophosLabs, SecOps (Sophos Managed Threat Response [MTR] and Sophos Rapid Response), and Sophos AI – operate in a virtuous Observe-Orient-Decide-Act loop, building on each teams’ work to improve customer protections. A recent set of investigations illustrates our OODA-loop process: Attacks against a pair of vulnerabilities in Microsoft SQL were researched, documented, and addressed proactively.…
By Jim Walter & Aleksandar Milenkoski
LockBit 3.0 ransomware (aka LockBit Black) is an evolution of the prolific LockBit ransomware-as-a-service (RaaS) family, which has roots that extend back to BlackMatter and related entities. After critical bugs were discovered in LockBit 2.0 in March 2022, the authors began work on updating their encryption routines and adding several new features designed to thwart researchers.…