So, this week it is my privilege to be TA-ing for Taz Wake for the beta run of his new class FOR577: Linux Incident Response and Threat Hunting. We were looking in the linux /proc filesystem and were noticing in the /proc/<pid>/net/{tcp/udp/icmp/…} that the IP addresses were listed in hex, but little-endian.
Apple today released iOS/iPadOS 17.0.3. These updates fix two vulnerabilities. A WebRTC vulnerability that could be used to execute arbitrary code, establishing initial access to the device, and a Kernel vulnerability used to elevate privileges. The privilege escalation vulnerability has been exploited against older versions of iOS. See Apple's page about these vulnerabilities: https://support.apple.com/en-us/HT213961.
Why reinvent the wheel? We are all lazy and, if we have a tool that offers some interesting capabilities, why not use it? I spotted a simple maliciouis Python script targeting Windows hosts. The file (SHA256:d706d94981bc53ab1458519f224b9602152325fc2a18f3df9d9da8f562b99044) is flagged by 16 antivirus products on VirusTotal[1]. Nothing very exciting with the script, it's a bot that uses a Discord channel for C2 communications.
"Infostealer" malware have been in the wild for a long time now. Once the computer's victim is infected, the goal is to steal "juicy" information like passwords, cookies, screenshots, keystrokes, and more. Yesterday, I spotted an interesting sample. It's delivered through an FTP connection. The file (SHA256:2bf9a44bd546e0fd1448521669136220dc49146b0f3a5cd7863698ac79b5e778) is unknown on VirusTotal.
I am trying to start a series of brief diaries about "what's normal." Analysts often only look at the network when they suspect something is wrong. But to find the anomaly, someone must first know what's normal. So, I am trying to collect data from my home network to show what to consider. The values I am presenting here are normal for my home network and will likely differ for your network. So, instead of just copying/pasting, run the experiment yourself 🙂
Adobe Experience Manager (AEM) is a complex enterprise-level content management system built around open-source products like Apache Sling, Jackrabbit/Oak, and Felix. Just last week, Adobe patched another XSS vulnerability in AEM. But the scans we see now target older vulnerabilities, likely a vulnerability 2-3 years old.
We use passwords just about everywhere in our daily lives. It's difficult to think of an online service where we don't have a need to enter some kind of credentials to access our content. DShield honeypots collect a variety of data, including passwords, that are submitted from SSH and telnet attacks.
Those of us who teach security awareness courses are often asked “Why would someone target ME?” or “Why would someone target OUR organization?”. Though these sentiments aren’t nearly as common as they used to be, since even mainstream media seem to cover cyber-attacks on at least a weekly basis, and – as a result – even non-IT specialists are becoming aware of the ubiquity of cyber-attacks, such questions still come up, both when teaching “regular” employees as well as when it comes to board-level security trainings.
