Thanks to @xorhex for an interesting discussion that is worth sharing here. I knew I read this somewhere but here's a fun thing you can do in YARA-X: 2 of ($a*, $b*, 3 of ($c*)) This is documented but not widely known: virustotal.github.io/yara-x/docs/...

New Gist: Age Verification is an Epic fail On Bluesky's introduction of age verification, selling us to the Fortnite guys, and how the arrogance of Ireland's regulator has seen it deliver the very outcomes it once called "bonkers". www.thegist.ie/the-gist-age...

My reverse engineering workflows survey is still ongoing! In less than 3 minutes, you can fill it in and help out: docs.google.com/forms/d/e/1F...

Hackers claim to have breached Gravy Analytics, a US location data broker selling to government agencies. They shared 3 samples on a Russian forum, exposing millions of location points across the US, Russia, and Europe.

#100DaysofYara Day 5 My first ELF binary: github.com/augustvansic... I also learned how to use x64dbg to attach to a process and follow the kernel32.dll WriteProcessMemory stack call to find where the EDR DLL gets a handle on the process.

x: @RustyNoob619 #100DaysofYARA Day 5 Added a couple of new YARA rules for TTPs 🐧 First is to detect embedded Windows PE payloads in a file as Base 64 encoding Second is to spot modification of memory protect flags which is typically used for code injection/unpacking github.com/RustyNoob-61...

crossposting here #100daysofyara continuing to explore yara-x today I tried to detect a renamed QEMU exe using pe attributes and a dynamic variable.

🦔 📹 Video: Learn how to write code based signatures ➡️ using privateloader as example ➡️ what to detect ➡️ where to set wildcards ➡️ how to test your rule on unpac me www.youtube.com/watch?v=oxC9... #MalwareAnalysisForHedgehogs #privateloader

New blog post for #100DaysofYARA , in this one I look at a VenomRAT sample and create rules based on PE metadata and an encryption salt value. forensicitguy.github.io/exploring-ve... #malware

#100DaysofYARA we're brute forcing Steve's prompt with regular expressions :P github.com/100DaysofYAR...

#100DaysOfYara Day 3 Thought this was an meterpreter implant but I compared it to an implant I made; much more functionality for the ITW sample. Rule = unique win32 api calls, IP’s, imports.

#100daysofyara I like taking the approach of having multiple YARA rules to detect the same thing from different perspectives, like these rules for Cronos Crypter. One looks for just strings, another a string + encryption salt, 3rd for assembly name

#100DaysofYARA day 2 - one cluster in my portfolio, TA427 really likes to use password-protected ZIP files with an MSC file as the only embedded file (used to use .VBS files) lets look for ZIPs that match those features! github.com/100DaysofYAR...

#100DaysOfYara Day 2: LBB.exe, Lockbit 4 PE github.com/augustvansic...

Configured my neovim conform.nvim to run "yr fmt" on save. Looking forward to "yr lint" and hoping someday for a yara-x LSP.

Gonna take a hangover day & start #100DaysOfYara late. Couldn't keep up last year & I'll see how it goes this year. I don't have the creativity of @greg-l.bsky.social Might do some scripting & play more with yara-x like @stvemillertime.bsky.social I have a half written gRPC service for file scanning

Ok day 1 of #100DaysofYara: I assigned some strings based on the less common lines from the Lockbit 4 loader that would likely be common in malicious code and not typically in normal admin, as well as a hex string for the PE itself

#100DaysofYARA day 1 - the Amos stealer is regularly evolving and updating its obfuscation techniques You know what isn't changing? the dylibs it depends on and the entitlements it requests from the OS. Combined, they give us excellent signal github.com/100DaysofYAR...

#100DaysofYARA 2025 edition begins tomorrow! Any #CTI or #detectionengineering folks looking for a self-paced challenge to start the year with a laid back & fun community? Look no further! The challenge is simple - write a YARA rule every day for 100 days

For all my math peeps out there: 2025 is pretty amazing mathematical arrangement. 1. 2025 is a perfect square (45×45=2025) 2. 2025 is the sum of digits of cubes from 1 to 9 (1³ + 2³ + 3³ + ... + 9³ = 2025) 3. 2025 is the first square year after 1936 (Cont…)