Today, I'm releasing the first version of a small web 🚀: rosti.bin.re/
It provides IOCs and YARA rules collected semi-automatically from public blog posts and reports of almost 200 cybersecurity sites.
I hope it proves useful to some of you ... 🙏✨ #ThreatIntel
ALT Screenshot of the "reports" section of Rösti. The page displays multiple reports in a grid format, each with a card-like design. Each card includes information such as the report title, author, publication date, associated threat indicators (IOCs and YARA rules), and source organization.
According to @GovCERT_CH , an unknown threat actor has sent out postal letters (yes, *postal* letters ✉️) to recipients in Switzerland that pretend to originate from @meteoschweiz, luring the recipient into downloading and installing a rogue App 🔥🕵️♂️
The QR code in the letter leads to a malicious App that impersonating the "AlertSwiss" App of the federal administration. However, the App in fact is a version of Coper (aka Octo2) #malware, infecting mobile phones running Android 📱🤖
Payload delivery URL:
🌐 urlhaus.abuse.ch/url/3290212…
Malware sample:
📄 bazaar.abuse.ch/sample/4928c…
Coper botnet C2:
🔥 threatfox.abuse.ch/ioc/13448…
➡ ncsc.admin.ch/ncsc/en/home/a…
ALT Screenshot of the blog post by cloudflare, where they suggest readers "search [their] environment for the FlyingYeti indicators of compromise (IOCs) shown below", but the IOCs are just low-res screenshots.
I wrote a blog post about MalpediaFLOSSed, a collection of ~4 million strings extracted from 1800 malware families and upgrading its GUI plugin to work with IDA, Ghidra, and Binary Ninja at once!
Kudos to @hyun____22 for Hyara, which pioneered such cross-tool compatibility!
#BinaryRefinery 0.5.10 can deobfuscate this sample with little effort. Only had to add one new unit for StrReverse constant folding. Not a silver bullet, obviously, but why write those regular expressions yourself when you can make me do it for you?
New video on the Domain Generation Algorithm of the file infector m0yv. We've sinkholed multiple domains & show how infections dramatically increased in the last 400 days 📈. #m0yv#DGAyoutu.be/3RYbkORtFnk
ALT Cartoony image of a large sinkhole. A monster character sits at the bottom of the sinkhole with a desperate face. In large letters the title "Sinkholing the DGA of m0yv" is shown.
Fortinet released security updates for FortiOS to fix a heap-based buffer overflow vulnerability (CVE-2022-42475). Apply patches asap. Read more at: go.dhs.gov/Z8v
We published a tech paper on the #ConfuserEx obfuscation mechanism of a Ginzo .NET sample. This class of obfuscator is known as code flatteners. We describe how it can be dealt with using a Python script IDA Pro
Blog:
👉govcert.ch/blog/unflattening…
Paper:
👉govcert.ch/whitepapers/unfla…
Since there's probably a few big CyberChef aficionados here, I'll go ahead and pitch my little rival project, the binary refinery: 🏭 github.com/binref/refinery/
It's (almost) like CyberChef, but it's a cross platform command line toolkit.
New blog post: Analysing TA551/Shathak malspam with binary refinery bin.re/blog/analysing-ta551-…
I show how the open source framework "binary refinery" can be effective in analysing multistage TA551 malspams with encrypted ZIP, Word document, HTA and Javascript.
ALT how TA551 malspam works: An encrypted zip file contains a word document. This document contains an obfuscated and hidden hta file which is extracted and run by macro code. The hta deobfuscates a Javascript with ActiveX that will download the final payload from an url.
Domain Generation Algorithms are straightforward to program and usually bug free. Not so the new #DGA of #BazarLoader, which goes haywire during the summer months: bin.re/blog/a-bazarloader-dg…