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.…
This post is also available in: 日本語 (Japanese)
Executive SummaryCybercriminals compromise domain names to attack the owners or users of the domains directly, or use them for various nefarious endeavors, including phishing, malware distribution, and command and control (C2) operations. A special case of DNS hijacking is called domain shadowing, where attackers stealthily create malicious subdomains under compromised domain names.…
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.…
During a routine threat hunting exercise, Cyble Research and Intelligence Labs (CRIL) came across a tweet where a researcher mentioned the creation of multiple fake Zoom sites. All these sites have the same user interface. These sites are created with the express intent of spreading malware disguised as the legitimate Zoom application.…
Ransomware is unique in the malware world, as it deliberately makes its presence known to the victim. But while the online extortionists behind these attacks need to announce their intentions in order to achieve their nefarious ends, that does not mean they wish to draw undue attention to themselves.…
By: Cofense Intelligence
Threat actors are running a series of campaigns spoofing several departments of the United States government. The emails claim to request bids for government projects but lead victims to credential phishing pages instead. These campaigns have been ongoing since at least mid-2019 and were first covered in our Flash Alert in July 2019.…
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.…
This post is also available in: 日本語 (Japanese)
Executive SummaryThere is a constant debate between usability and security in the software world. Many third-party programs can make their users’ lives easier and save them time by storing their credentials. However, as it turns out, this convenience often comes at the price of poor security, causing the risk of password theft.…
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.…
Found in Environments Protected By: Microsoft
By Nathaniel Sagibanda, Cofense Phishing Defense Center
Customer feedback is always important for organizations of all sizes. There are several well-known companies that offer different kinds of feedback tools. But what if, however, those customer feedback systems were utilized to launch Phishing attacks?…
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.…
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.…