@zeroday504

z3r0day504

@zeroday504Joined May 2021

Catching bad guys in the cyberverse

About

Security analyst with 5 years of experience in incident response and digital forensics.

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Nothing here yet.

z3r0day504's blogs

MatryoshkaHaxmatryoshkahax.hashnode.dev10 posts

Lsass and Credential Theft

What is Lsass.exe The Windows Local Security Authority Subsystem Service, or lsass.exe, is an executable native to all Windows operating systems. It is a core component of Windows OS security and is responsible for the following: Which users are all...

1Jun 11, 2021 · 4 min readmatryoshkahax.hashnode.dev

Ransomware: What is it and why has it taken cyberspace by storm?

Unfortunately there is no rarity in daily news reporting on a new corporate victim of ransomware. The general population is most privy to its impacts because of the effects it has on the supply chain: fuel prices sky rocket, virtual services become u...

1Jun 3, 2021 · 6 min readmatryoshkahax.hashnode.dev

Basic Security Log Analysis on Windows

Security log analysis is helpful and effective on Windows when it comes to characterizing activity involving user accounts, remote access to a network, and lateral movement amongst other behavior. Event Viewer is native to the Windows OS and allows y...

May 28, 2021 · 4 min readmatryoshkahax.hashnode.dev

CTF Tools and Resources

--Tool names in italics are native to Kali Multi-use tools CyberChef : Great tool for multi-layer crypto challenges, basic stego, and deobfuscation Stego Tools StegOnline : Online tool to manipulate RGB values in an image, modify image for least s...

May 17, 2021 · 2 min readmatryoshkahax.hashnode.dev

dCTF - Dragon

"Dragon" provides you the following prompt and image: Being that all that's provided is an image, one can assume that this will be a steganography challenge and that the flag is somehow hidden in the image. steghide will not work because the file f...

May 17, 2021 · 2 min readmatryoshkahax.hashnode.dev

z3r0day504

About

Available for

z3r0day504's blogs

Lsass and Credential Theft

Ransomware: What is it and why has it taken cyberspace by storm?

Basic Security Log Analysis on Windows

CTF Tools and Resources

dCTF - Dragon

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z3r0day504

About

Available for

z3r0day504's blogs

Lsass and Credential Theft

Ransomware: What is it and why has it taken cyberspace by storm?

Basic Security Log Analysis on Windows

CTF Tools and Resources

dCTF - Dragon