Category: SANS Full Feed

I detected an interesting phishing email this morning. It targets a major Belgian bank: The phishing in itself is a classic one, not relevant but the malicious link is interesting: hxxp://[::ffff:5511:74be]/kWC5PHA1 The technique used by the attacker is to bypass simple security controls trying to extract domain names and IP addresses via simple regular expressions.…

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[This is a Guest Diary by Adam Nason, an ISC intern as part of the SANS.edu BACS program] Brute force SSH attacks are an ever-present threat on the internet today. We examine probing behavior over the last three months to identify coordinated and opportunistic attacks by threat actors. A DShield Honeypot has quietly collected and…

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Yesterday, a reader reported to us a malicious ZIP archive (SHA256: a0104921a2d37ab87482ac9a9f5c3713479c118846c3e999178e75b81620c094[1]). Once unzipped, it contains a VHDX file that discloses a malicious JavaScript after being mounted (which is automatic on modern Windows OSs): Two different techniques to hide the payload help to bypass most first-line security controls. Using a disk image as a “malware container” has been…

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I like it when a fellow handler posts a diary entry about images with malicious content. Last one is Xavier: “The Evil MSI Background is Back!“. I like to have a go at the sample with my tools, and see if there are any improvements I can make to my tools. Let’s take a look…

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