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Analysis of Xloader’s C2 Network Encryption

Security Boulevard

In October 2020, Formbook was rebranded as Xloader and some significant improvements were introduced, especially related to the command and control (C2) network encryption. In 2017, Formbook’s panel source was leaked, and subsequently, the threat actor behind Xloader moved to a different business model. Xloader PUSHEBP encrypted block.

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A Closer Look at the Snatch Data Ransom Group

Krebs on Security

The government says Snatch used a customized ransomware variant notable for rebooting Microsoft Windows devices into Safe Mode — enabling the ransomware to circumvent detection by antivirus or endpoint protection — and then encrypting files when few services are running. Details after contacting on jabber: truniger@xmpp[.]jp.”

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Post-Quantum Cryptography: Lessons Learned from SHA-1 Deprecation

Security Boulevard

Despite all the emphasis around the shift from SHA-1 to SHA-2, 35% of websites were still utilizing SHA-1 certificates as of November 2016, according to research from Venafi in 2017. Post-Quantum Encryption Algorithms Announced. Challenges toward post-quantum cryptography: confidentiality and authentication. SHA-1 Deprecation.

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Lab Walkthrough?—?The WannaCry Ransomware

Pentester Academy

Introduction In May 2017, a worldwide ransomware attack infamously known as WannaCry was set in motion. This ransomware made use of the EternalBlue , an exploit of Microsoft’s implementation of their SMB protocol, released by The Shadow Brokers hacker group in April 2017, to gain access to remote Windows machines in most cases.

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Exposing the inner-workings of the ransomware economy

Elie

This blog post shed light on the inner workings of the ransomsphere economics and exposes which cybercriminal groups are the biggest earners. This is the second blog post in my series about ransomware economics. previous blog post about our methodology. The first post. final post. You can check out the slides.

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The Long Run of Shade Ransomware

Security Affairs

This file acts as downloader in the infection chain, using a series of hard-coded server addresses, It heavily rely on obfuscation and encryption to avoid the antimalware detection. Shade encrypts all the user files using an AES encryption scheme. Background of the infected machine, after encryption phase. Conclusions.

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My Philosophy and Recommendations Around the LastPass Breaches

Daniel Miessler

It started back in August of 2022 as a fairly common breach notification on a blog, but it, unfortunately, turned into more of a blog series. After initiating an immediate investigation, we have seen no evidence that this incident involved any access to customer data or encrypted password vaults. Actually, some data was lost.