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Security Monitoring for Threats on Embedded Linux

Embedded Linux
Malware
May 04, 2022

A new report from Mandiant entitled: Eye Spy on Your Email details a series of sophisticated attacks against embedded network devices often running Linux. In particular, the report states (emphasis…

Leveling Up Your Linux Security

Linux Security
February 22, 2022

We get fan mail about Sandfly and how we've helped people, but we're even more excited when we get a fan blog post. A user of Sandfly writes about their experience from the perspective of a SOC…

Log4j Kinsing Linux Stealth Malware in the Wild

Malware
Linux Security
Linux Forensics
December 14, 2021

A severe vulnerability in the popular Java Log4j package ( CVE-2021-44228 ) allows remote code execution on Linux and other platforms. Within about a day of being publicized, the cryptomining malware…

Linux Stealth Rootkit Malware with EDR Evasion

Malware
Rootkits
Linux Forensics
Linux Security
November 28, 2021

Recently, Sandfly was contacted to investigate an incident involving a novel piece of Linux stealth malware. What made this malware interesting is it deployed a full stealth rootkit to hide itself,…

Detecting CronRAT Crontab Malware on Linux

Malware
Linux Security
Linux Forensics
November 28, 2021

Security researchers recently discovered a new kind of Linux malware that was hiding its payload as part of an illegal crontab entry on Linux. The malware is being used to insert card skimming…

Linux Command Line Forensics and Intrusion Detection Cheat Sheet

Linux Forensics
Malware
Rootkits
Linux Security
Cheat Sheets
May 20, 2021

Below is our Linux command line forensics and intrusion detection cheat sheet along with a presentation given at Purplecon 2018 . These resources can help you investigate a Linux host for compromise…