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Using a methodology first seen in 2020, an unknown threat actor has been exploiting a three-year-old bug in the Telerik UI web application framework to take control of web servers, installing Cobalt Strike beacons and other malware in the process.
In the weeks following the initial, 2019 disclosure of the vulnerability, attackers scanned the internet for vulnerable applications.…
A new remote code execution vulnerability called “Follina” has been found lurking in most Microsoft products. In this blog, we examine a potential attack vector as well as technical details of Follina, and chart the ability to detect this new vulnerability using both Qualys Multi-Vector EDR and Qualys Context XDR.…
Purple Fox malware was first discovered in 2018 and was delivered by RIG EK (Exploit Kit). However, it has now become an independent malware with its own exploit kit framework. Like many other exploit kits, Purple Fox is regularly updating its capabilities by using different exploits that are available in the wild to obtain remote code execution and privilege escalation on vulnerable machines as well as installing backdoors and propagating to other machines.…
Introduction
On May 31, a critical unpatched vulnerability, which affects all confluence server and data center supported versions was reported to Atlassian by Volexity, a security company.
Atlassian warned their customers of the critical vulnerability on June 2 and issued a patch a day later. CISA added this vulnerability to their list of Known Exploited Vulnerabilities on June 3.…
Users of WSO2 products are advised to update their respective products and platforms or to apply the temporary mitigation steps immediately.
We observed vulnerability CVE-2022-29464 being exploited in the wild since April, allowing unrestricted file uploads resulting to arbitrary remote code execution (RCE). Disclosed and patched in April, the security gap was ranked Critical at 9.8 and affects a number of WSO2 products.…
An unknown Advanced Persistent Threat (APT) group has targeted Russian government entities with at least four separate spear phishing campaigns since late February, 2022.
The campaigns, discovered by the Malwarebytes Threat Intelligence team, are designed to implant a Remote Access Trojan (RAT) that can be used to surveil the computers it infects, and run commands on them remotely.…
In December last year, the vulnerability (CVE-2021-44228) of Java-based logging utility Log4j became a worldwide issue. It is a remote code execution vulnerability that can include the remote Java object address in the log message and send it to the server using Log4j to run the Java object in the server.…
ITG23 Crypters Highlight Cooperation Between Cybercriminal Groups
cybercriminal group ITG23, also known as Wizard Spider, DEV-0193, or simply the “Trickbot Group”. The results of this research, along with evidence gained from the disclosure of internal ITG23 chat logs (“Contileaks”), provide new insight into the connections and cooperation between prominent cybercriminal groups whose attacks often lead to ransomware.…
We all know vulnerabilities have a lifecycle. First, they start as closely held secrets, hopefully known to the company producing the vulnerable software. After becoming publically known, there is often a “mad dash” to a public exploit. During this phase, security companies often show their skills by hinting at privately developed exploits first until the exploit is publically known.…
We analyze the Black Basta ransomware and examine the malicious actor’s familiar infection tactics.
Black Basta, a new ransomware gang, has swiftly risen to prominence in recent weeks after it caused massive breaches to organizations in a short span of time.
On April 20, 2022, a user named Black Basta posted on underground forums known as XSS.IS…
SystemBC is a proxy malware that has been used by various attackers for the last few years. While it is recently distributed through SmokeLoader or Emotet, this malware has steadily been used in various ransomware attacks in the past. When an attacker attempts to access a certain address with malicious intent, the system can be used as a passage if the infected system utilizes SystemBC, which acts as a Proxy Bot.…
We discovered active exploitation of a vulnerability in the Spring Framework designated as CVE-2022-22965 that allows malicious actors to download the Mirai botnet malware.
Trend Micro Threat Research observed active exploitation of the Spring4Shell vulnerability assigned as CVE-2022-22965, which allows malicious actors to weaponize and execute the Mirai botnet malware.…
Juniper Threat Labs has uncovered an attack that targets Redis Servers using a recently disclosed vulnerability, namely CVE-2022-0543. This vulnerability exists in some Redis Debian packages. The attack started on March 11, 2022 from the same threat actor we’ve seen targeting confluence servers back in September 2021 and the same group targeting Log4j back in December.…
This is the story of piecing together information and research leading to the discovery of one of the largest botnet-as-a-service cybercrime operations we’ve seen in a while. This research reveals that a cryptomining malware campaign we reported in 2018, Glupteba malware, significant DDoS attacks targeting several companies in Russia, including Yandex, as well as in New Zealand, and the United States, and presumably also the TrickBot malware were all distributed by the same C2 server.…
Dragos has observed consistent network communication between Emotet Command and Control (C2) servers and numerous auto manufacturing companies. These Emotet servers are suspected to be controlled by the Conti ransomware group.
At this stage, Dragos has not yet observed any confirmed initial access methods being utilized and does not have any evidence of ransomware encryption being initiated.…
The ASEC analysis team is constantly monitoring malware distributed to vulnerable database servers (MS-SQL, MySQL servers). This blog will explain the RAT malware named Gh0stCringe[1].
Gh0stCringe, also known as CirenegRAT, is one of the malware variants based on the code of Gh0st RAT. It was first discovered in December 2018, and it is known to have been distributed via SMB vulnerability (using the SMB vulnerability tool of ZombieBoy).[2]…
Summary
Multifactor Authentication (MFA): A Cybersecurity Essential• MFA is one of the most important cybersecurity practices to reduce the risk of intrusions—according to industry research, users who enable MFA are up to 99 percent less likely to have an account compromised.• Every organization should enforce MFA for all employees and customers, and every user should sign up for MFA when available.•…
By Securonix Threat Labs, Threat Research: Oleg Kolesnikov, Den Iuzvyk, and Tim Peck
IntroductionOur researchers have identified EnemyBot, a brand new Linux-based botnet. At first glance and by analyzing the initial infection, it appears to cover a wide range of devices and platforms. This report covers technical details including its origin and functionality.…
Since its reemergence on Nov. 14, 2021, Black Lotus Labs has once again been tracking Emotet, one of the world’s most prolific malware distribution families which previously infected more than 1.6M devices and caused hundreds of millions of dollars in damage across critical infrastructure, healthcare, government organizations and enterprises around the world.…
CryptBot is an infostealer that is usually distributed under the disguise of web pages that share cracks and tools. The distribution pages are exposed at the top of the search result page of search engines such as Google, so the risk of infection is high, and the number of relevant detection cases is also relatively high.…