Stay Ahead of Cyber Threats – Daily Security Insights, Powered by AI
In this intrusion from May 2022, the threat actors used BumbleBee as the initial access vector. BumbleBee has been identified as an initial access vector utilized by several ransomware affiliates.
In this intrusion, we see the threat actor use BumbleBee to deploy Cobalt Strike and Meterpreter.…
Broadcom Software, tracks as Coreid (aka FIN7, Carbon Spider). Darkside was used in the Colonial Pipeline ransomware attack in May 2021. The extreme amount of public and law enforcement attention that attack attracted led Coreid to shut down Darkside and replace it with BlackMatter. Coreid runs a ransomware-as-a-service (RaaS) operation, which means it develops the ransomware but it is deployed by affiliates for a cut of the profits.…
Summary
The Federal Bureau of Investigation (FBI) and the Cybersecurity and Infrastructure Security Agency (CISA) are releasing this joint Cybersecurity Advisory to provide information on recent cyber operations against the Government of Albania in July and September. This advisory provides a timeline of activity observed, from initial access to execution of encryption and wiper attacks.…
Users are advised to patch immediately: We found exploit samples abusing the Atlassian Confluence vulnerability (CVE-2022-26134) in the wild for malicious cryptocurrency mining.
We observed the active exploitation of CVE-2022-26134, an unauthenticated remote code execution (RCE) vulnerability with a critical rating of 9.8 in the collaboration tool Atlassian Confluence.…
On a bi-weekly basis, FortiGuard Labs gathers data on ransomware variants of interest that have been gaining traction within the OSINT community and our datasets. The Ransomware Roundup report aims to provide readers with brief insights into the evolving ransomware landscape and the Fortinet solutions that protect against those variants.…
Over the past week we observed three different attacks on our honeypots. The scripts and malware that were used bear a striking resemblance to none other than the threat actor TeamTNT. Eleven months ago they posted a farewell note on Twitter. Since then, we have only seen legacy attacks which automatically run on past infrastructure.…
Summary
Actions to take today to protect against ransom operations:
• Keep systems and software updated and prioritize remediating known exploited vulnerabilities.• Enforce MFA.• Make offline backups of your data.
This joint Cybersecurity Advisory (CSA) is the result of an analytic effort among the Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), the National Security Agency (NSA), U.S.…
The Arctic Wolf Labs team recently investigated a Lorenz ransomware intrusion, which leveraged a Mitel MiVoice VoIP appliance vulnerability (CVE-2022-29499) for initial access and Microsoft’s BitLocker Drive Encryption for data encryption.…
a well-known technique that involves attackers placing a malicious DLL in a directory where a legitimate DLL is expected to be found. The attacker then runs the legitimate application themselves (having installed it themselves in most cases). The legitimate application then loads and executes the payload.…
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.…
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.…
Earlier this year, [redacted] encountered a relatively new ransomware threat actor that called themselves BianLian. We observed the actor deploying custom malware that was written in the Go programming language, which posed some initial, but not insurmountable, reverse-engineering challenges.
BianLian used subtle techniques to exploit, enumerate, and move laterally in victim networks to remain undetected and aggressively worked to counter Endpoint Detection & Response (EDR) protections during the encryption phase of their operations.…
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. …
BlueSky ransomware is an emerging threat that researchers have been paying increasing attention to since its initial discovery in late June 2022. The ransomware has been observed being spread via trojanized downloads from questionable websites as well as in phishing emails.
Although infections at this time remain low, the ransomware’s characteristics, described below, suggest it has been carefully developed for a sustained campaign.…
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.…
Key points
The Black Hat network is more unique and complex than a standard enterprise network due to the number and diversity of devices connected, the abundance of trainings and labs that occur, and the rapid nature of the engagement itself. Over the course of the conference, our IronDefense NDR solution generated 31 malicious alerts and 45 suspicious alerts, detecting both real malware activity and simulated attack tactics from classes and demos.…Recently, a simple and short email with a suspicious RTF attachment that had been sent to a telecommunications agency in South Asia caught the attention of FortiGuard Labs. The email was disguised as having come from a Pakistan government division and delivered the PivNoxy malware.
Affected Platforms: WindowsImpacted Parties: Windows usersImpact: Controls victim’s machine and collects sensitive informationSeverity Level: Medium
This blog describes how the attack works, suggests who the threat actor behind the operation might be, and details the techniques used by the attacker.…