Analyzing a Malicious APK

After hitting roadblocks on a couple other projects I’m working on, like analyzing firmware from a suspiciously cheap IP camera and analyzing the CAN network in my car, I decided to go back to malware analysis but look at mobile applications instead. So I searched Any.run for APKs and grabbed the first one. Name: VPX.apk […]

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Anubis Stealer

I was looking for a .NET malware to mess around with dnspy a bit so I checked out https://bazaar.abuse.ch. Sure enough I found one right at the top that was labeled as AgentTesla and Anubis. Note: this is not the Android malware making its rounds currently that shares the same name. Sample info MD5: a9045a197fe0d39fe9d96f3937788f91 […]

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Fuzzy Hashing

I’ve been doing some more malware analysis during my free time and started using some more techniques such as fuzzy hashing with SSDEEP and import hashing. It’s an easy way to find out what sort of malware an otherwise unknown executable is. Fuzzy hashing with SSDEEP works by hashing through a different algorithm designed for […]

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Ransomware Quarantine Using ExtraHop

One of ExtraHop’s key differentiators is its ability to detect Ransomware attacks as they are occurring. It does this by analyzing all of the CIFS traffic over the wire in real-time and determines if the activity is malicious based on four different rules.  Ransomware Type Definitions: BLACKLIST This approach checks file extensions against a listing […]

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DFIR Scenario #1 Lone Wolf

Introduction This fictional digital investigation scenario examines the disk image and memory of a person’s laptop that was seized. The suspect in question is believed to be planning a mass shooting attack. Our role as the forensic investigator is to find evidence that either supports or disproves this allegation. Acquisition The forensic examiner present during […]

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[HTB] Omni Write-up

This was a pretty interesting box and had a new OS that I’ve never messed with. As always we start with an Nmap scan and adding the box to our hosts file. So we see that it looks like a Windows server but we never get a proper OS fingerprint for it. After some Googling, […]

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[HTB] Blunder Write-up

As always start off with an Nmap scan. I also tend to use this time to add the box to my hosts file as [box_name].htb Enumerate the directories of the webpage using Gobuster, dirsearch, wfuzz, etc. [+] /about [+] /0 [+] /admin [+] /usb [+] /LICENSE [+] /todo.txt [+] /robots.txt After looking in todo.txt, possible […]

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