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
Johannes Bader retweeted
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…
Johannes Bader retweeted
What's happening? #FlareOn11 is happening! Time to update #BinaryRefinery and snag some flags!
✨ github.com/binref/refinery/
✨ flare-on11.ctfd.io/challenge…
Johannes Bader retweeted
We're proud to be a @Quad9DNS partner, helping make the Internet a safer place!
Could you please share your IOCs in any format that is NOT low screenshots @Cloudflare 🙏?
blog.cloudflare.com/disrupti…
Johannes Bader retweeted
Nice #MooBot botnet caught by @banthisguy9349 😂
Botnet C2 domain:
🔥 putin.zelenskyj .ru
Pointing to:
45.88.90.30:43957 (AS203168 Constant MOULIN 🇧🇪)
DNS resolution provided by Cloudflare 🔎
Payload URLs:
🌐 urlhaus.abuse.ch/host/45.88.…
Payload:
📄 bazaar.abuse.ch/sample/21f1c…
Johannes Bader retweeted
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!
Johannes Bader retweeted
New blog post: threatcat.ch/blog/when-hunte… #nuclei
Johannes Bader retweeted
I wrote a short blog post on MCRIT, the one-to-many code similarity analysis framework that we released as open source recently at @Botconf.
[blog post] MCRIT: The MinHash-based Code Relationship & Investigation Toolkit
danielplohmann.github.io/blo…
Johannes Bader retweeted
#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?
CyberChef for Malware Analysis - DCRat Loader
youtube.com/watch?v=rpp6BZYI…
Johannes Bader retweeted
🛠️ .NET malware decompiling challenges: Obfuscations of strings/constants can be tedious. Automate w/ IDA Pro's Python 🐍 interface for MSIL binary patching, even for simple cases: threatcat.ch/blog/undo-dotne…
#CyberSecurity #MalwareAnalysis #IDAPro #DotNET
Johannes Bader retweeted
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 #DGA
youtu.be/3RYbkORtFnk
Johannes Bader retweeted
Just updated the "malwarebazaar" Python module to include a Python and CLI client for @abuse_ch #YARAify and added a "richer" output. You can find it on Github (github.com/3c7/bazaar/releas…) and on PyPI (via "malwarebazaar").
#threatintel #malware
Johannes Bader retweeted
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
Johannes Bader retweeted
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…
I published a new blog post on a Domain Generation Algorithm that uses the balance of the Bitcoin genesis block as seed.
bin.re/blog/a-dga-seeded-by-…
New blog post: "The Domain Generation Algorithms of SharkBot" 🦈
bin.re/blog/the-dgas-of-shar…
Johannes Bader retweeted
Replying to @chrissanders88
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.
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…







![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.](https://pbs.twimg.com/media/GO1umOdWEAA8t9L.jpg?name=small&format=webp)




















