For most system and network administrators, the free SSH client Putty has been their best friend for years! This tool was also (ab)used by attackers that deployed a trojanized version[1]. Microsoft had the good idea to include OpenSSH (beta version)…
Category: SANS Internet Storm Center, InfoCON: green
YARA 4.5.3 Release, (Sun, Jun 1st)
YARA 4.5.3 was released with 5 bugfixes. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: YARA 4.5.3 Release, (Sun, Jun 1st)
A PNG Image With an Embedded Gift, (Sat, May 31st)
While hunting, I found an interesting picture. It's a PNG file that was concatenated with two interesting payloads. There are file formats that are good candidates to have data added at the end of the file. PNG is the case…
ISC Stormcast For Friday, May 30th, 2025 https://isc.sans.edu/podcastdetail/9472, (Fri, May 30th)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Friday, May 30th, 2025…
Usage of “passwd” Command in DShield Honeypots, (Fri, May 30th)
DShield honeypots [1] receive different types of attack traffic and the volume of that traffic can change over time. I've been collecting data from a half dozen honeypots for a little over a year to make comparisons. This data includes: …
ISC Stormcast For Thursday, May 29th, 2025 https://isc.sans.edu/podcastdetail/9470, (Thu, May 29th)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Thursday, May 29th, 2025…
Alternate Data Streams ? Adversary Defense Evasion and Detection [Guest Diary], (Wed, May 28th)
[This is a Guest Diary by Ehsaan Mavani, an ISC intern as part of the SANS.edu BACS program] This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: Alternate Data Streams ? Adversary Defense…
[Guest Diary] Exploring a Use Case of Artificial Intelligence Assistance with Understanding an Attack, (Wed, May 28th)
[This is a Guest Diary by Jennifer Wilson, an ISC intern as part of the SANS.edu Bachelor's Degree in Applied Cybersecurity (BACS) program [1].] This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article:…
ISC Stormcast For Wednesday, May 28th, 2025 https://isc.sans.edu/podcastdetail/9468, (Wed, May 28th)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Wednesday, May 28th, 2025…
Securing Your SSH authorized_keys File, (Tue, May 27th)
This is nothing “amazingly new”, but more of a reminder to secure your “authorized_keys” file for SSH. One of the first things I see even simple bots do to obtain persistent access to a UNIX system is to add a…
ISC Stormcast For Tuesday, May 27th, 2025 https://isc.sans.edu/podcastdetail/9466, (Tue, May 27th)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Tuesday, May 27th, 2025…
SVG Steganography, (Mon, May 26th)
Didier recently published several diaries related to steganography. I have to admit that steganography isn't exactly my favorite topic. It is one of those “neat” infosec toys, but its applicability is limited. Data exfiltration usually does not require proper steganography,…
ISC Stormcast For Friday, May 23rd, 2025 https://isc.sans.edu/podcastdetail/9464, (Fri, May 23rd)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Friday, May 23rd, 2025…
Resilient Secure Backup Connectivity for SMB/Home Users, (Thu, May 22nd)
If you are reading this, you are probably someone who will not easily go without internet connectivity for an extended amount of time. You may also have various home systems that you would like to be able to reach in…
ISC Stormcast For Thursday, May 22nd, 2025 https://isc.sans.edu/podcastdetail/9462, (Thu, May 22nd)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Thursday, May 22nd, 2025…
New Variant of Crypto Confidence Scam, (Wed, May 21st)
In February, we had a few diaries about crypto wallet scams. We saw these scams use YouTube comments, but they happened via other platforms and messaging systems, not just YouTube [1]. The scam was a bit convoluted: The scammer posted…
ISC Stormcast For Wednesday, May 21st, 2025 https://isc.sans.edu/podcastdetail/9460, (Wed, May 21st)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Wednesday, May 21st, 2025…
Researchers Scanning the Internet, (Tue, May 20th)
We have been using our data to identify researchers scanning the internet for a few years. Currently, we are tracking 36 groups performing such scans, and our data feed of the IP addresses used contains around 33k addresses [1]. …
ISC Stormcast For Tuesday, May 20th, 2025 https://isc.sans.edu/podcastdetail/9458, (Tue, May 20th)
This post doesn’t have text content, please click on the link below to view the original article. This article has been indexed from SANS Internet Storm Center, InfoCON: green Read the original article: ISC Stormcast For Tuesday, May 20th, 2025…
RAT Dropped By Two Layers of AutoIT Code, (Mon, May 19th)
Like .Net, AutoIT[1] remains a popular language for years in the malware ecosystem. It's a simple language that can interact with all the components of the Windows operating system. I regularly discover AutoIT3 binaries (yes, it can be compiled). This…