November 8, 2023 at 06:03PM
Security researchers have discovered a new variant of the Jupyter information stealer malware, also known as Yellow Cockatoo, Solarmarker, and Polazert. The malware can infiltrate machines and collect sensitive data, including credentials for crypto-wallets and remote access apps. The malware has been observed leveraging PowerShell command modifications and digitally signed payloads to evade detection. It is distributed through various techniques, such as search engine redirects, drive-by downloads, phishing, and SEO poisoning. The use of infostealers like Jupyter has increased significantly due to the rise in remote work during the COVID-19 pandemic.
Summary:
– Security researchers have identified a new variant of a malware called Jupyter, also known as Yellow Cockatoo, Solarmarker, and Polazert.
– The malware targets users of Chrome, Edge, and Firefox browsers and is capable of backdooring machines and collecting various credential information.
– The new version of the malware has been observed leveraging PowerShell command modifications and digitally signed payloads to evade detection.
– Jupyter acts as a full-fledged backdoor, supporting command and control communications, acting as a dropper and loader for other malware, and executing PowerShell scripts and commands.
– The malware targets crypto-wallets and remote access applications in addition to browsers.
– Distribution techniques include search engine redirects, drive-by downloads, phishing, and SEO poisoning.
– The threat actor behind Jupyter uses valid certificates and deceptive filenames to make the malware appear legitimate.
– Jupyter has been among the top 10 most frequent infections detected on client networks in recent years.
– The increase in infostealers, including Jupyter, is attributed to the shift to remote work during the COVID-19 pandemic.
– Infostealers are used to gather credentials from remote workers, enabling privileged access to enterprise networks and systems.
– The exfiltrated data is often sold on criminal forums, serving as an initial access point for other threat actors.
Note: This summary provides a concise overview of the main points mentioned in the meeting notes.