Posts

Showing posts with the label malicious code

Twelve Unique Linux Commands that Should Never be Used

After implementing a fork bomb in eleven different language implementations ~] the tuto [~ , I got inspired to revisit the few strings when executed in the Linux terminal, can be all kinds of destructive to the host. I'm not re-inventing the wheel here. Many of you probably know them, (and the variants), there's nothing new here. However, it's a good practice to review these type of things from time to time. So enjoy but do not run any of these on your system. I have provided descriptions for each, discussing what the results will be if you make a mistake. If these are new to you, understand the precautions, and do not use any of these. Thank you. . rm rf The rm -rf command is a simplistic, low level cmd an one of the fastest ways to delete files, dirs and their contents. But a little ignorance of the cmds may result in an unrecoverable system, even damage hw. Some of the destructive options used with rm are: . rm              //* base cmd use...

Hidden in Plain Sight - Uncovering the 'New' Malware.

Over the years I have seen and worked on my share of malware, watched as the vulz and exploits come and go. After a few years in frey, one becomes very attuned to the world that's surrounds them. This sixth sense is an asset and more valuable now than any other time, welcome to the new era of malz. This is a hidden world, where silence, stealth and pure imagination contribute to what is normally a quiet infection. Distinguished with highly-complex coding, persistence and it's signature polymorphic design. Those involved in cybersec know of this new breed, stealth and delivery, as well as those who design and code them. This is a journey leading to, and the analysis of a recent live malware discovery by myself. This write-up will highlight the importance of a full skill set and how that sixth sense comes into play. I am, however, leaving out some crucial information on certain parts. This is in consideration that the malware and delivery structure is still in the wild. We hav...