Attacks

Citrix Releases Security Updates for ADC and Gateway

Original release date: November 9, 2022 Citrix has released security updates to address vulnerabilities in Citrix ADC and Citrix Gateway. A remote attacker could exploit one of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Citrix Security Updates CTX463706 and apply the necessary updates. This product is provided subject to this Notification and this Privacy & Use policy.

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Hacker releases stolen Medibank data on the dark web

The hacker that stole 200GB worth of customer data from Australian health insurance provider Medibank has released files containing some of the data on the dark web. The data leak comes after Medibank publicly refused to pay the hacker a ransom on November 7. This prompted the malicious actor to post a threat on November 8 on a dark web site backed by Russian ransomware group REvil. It stated  they would release the data in…

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Medibank Refuses to Pay Ransom, Ransomware Gang Threatens to Release Customer Data

Companies have a few options when it comes to detecting unauthorized access of files, which may have helped catch the attack before a significant amount of customer data was exfiltrated in this case. Canary tokens can be leveraged to create files that appear highly valuable but create an alert when accessed. Companies can also implement canary accounts, baiting attackers into logging into accounts that trigger an alert on a successful login, that appear to be…

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W4SP Stealer Found in Dozens of Python Packages in the PyPI registry

PyPI is often treated as a very trustworthy source of packages; in reality, anyone can upload a package to be distributed by PyPI. It is recommended to install python libraries using built-in operating system package managers where possible. For example, on Debian based Linux systems using apt(8), it is recommend to use: apt install python3-. Repositories maintained by Linux operating system developers typically have more stringent requirements for new packages.In the event that using an…

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Azov Ransomware Identified as Wiper Malware

Downloading software from illegitimate sources always carries a risk. In this case, the malware is being spread via pirated software. Whenever software is being downloaded, it should be from a legitimate source. As a rule of thumb, any paid software being advertised for free is highly likely to include a type of malware or adware with it. Windows Applocker and other security solutions can assist in defining an allow list for software within a secured…

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CISA Adds Seven Known Exploited Vulnerabilities to Catalog

Original release date: November 8, 2022 CISA has added seven vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise. Note: to view the newly added vulnerabilities in the catalog, click on the arrow in the “Date Added to Catalog” column, which will sort by descending dates. Binding Operational Directive (BOD) 22-01:…

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Hacker threatens to release data stolen from 9.7m Medibank customers

A threat to release 200GB worth of data stolen from Australian health insurance company Medibank has been posted to a site backed by Russian ransomware group, REvil. The threat comes after Medibank made a public statement that it would not be paying the ransom demanded by the hacker. In the message, the supposed hacker quotes Confuscious, implying Medibank is making a “mistake” by not paying the ransom. The malicious actor then said that they would…

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Hacktivist Use of DDoS Activity Causes Minor Impacts

DDoS attacks are of varying lengths of time and can be identified by:• Unusually slow network performance (opening files or accessing websites).• Unavailability of a particular website or the inability to access any website.To mitigate a DDoS attack:• Enroll in a Denial-of-Service protection service that detects abnormal traffic flows and redirects traffic away from the network.• Create a partnership with the local internet service provider (ISP) prior to an event and work with the ISP…

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Boeing Subsidiary Jeppesen Suffers Cyberattack

To minimize the effect of ransomware attacks, organizations should regularly back up their data and keep secure copies offline. It is also important to keep systems up to date with patches and anti-virus software. A 24/7 monitoring solution like the one that is offered by Binary Defense and the Security Operations Center should be considered when determining a defense solution as well. Monitoring for network intrusions and reporting suspicious activity can greatly reduce the effects…

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Experts Say Security Scanner Leaks Sensitive Data

The investigation also discovered that misconfigured security products submit every link they receive via emails to urlscan.io as a public scan. A malicious actor may use the scan results to launch password reset links for the compromised email addresses, capture the URLs, and use those links to take control of the accounts. The adversary can look up the specific services registered using the target email addresses on data breach reporting websites, like Have I Been…

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