AnyRun Christmas CTF

-

 
Keen-eyed Tweeps may have noticed that AnyRun tweeted out a Christmas CTF in their Xmas post card this year (see above). I enjoy a good CTF and with some help from @KrabsOnSecurity we uncovered a code for a free trial of AnyRun Explorer (an account option which is not on the pricing package). 

The CTF started with the above tweet, which contains a QR code. Once scanned a message appears:

Using the built-in QR code scanner on my iPhone the code, the message appeared. I then chucked this into base64decode as I have inspected enough malicious code to realise when it is encoded this way:


I got stuck here as the decoded output does not look like any encoded/encryption I have seen before. Luckily, @KrabsOnSecurity noticed this is an ID for an AnyRun sample run:

This revealed a glowing Christmas tree produced by a PowerShell script that, when downloaded, contained the code for the CTF:

And voila! We earned ourselves a nice trial of AnyRun explorer after a short CTF on Twitter:


References:

https://app.any.run/tasks/cc038438-ca6b-4eb7-9382-7e4c61a58f3b

https://twitter.com/anyrun_app/status/1342082317385396225?s=20

___________________________________________________________________________________

I do enjoy a good CTF, if you also like CTFs, then feel free to check my own CTFs created for investigators to do some OSINT:

https://blog.bushidotoken.net/p/ctf.html

Popular posts from this blog

Raspberry Robin: A global USB malware campaign providing access to ransomware operators

-
Image
Logo credit: RedCanary Ever since it first appeared in late 2021, the Raspberry Robin malware campaign has been propagating globally. A number of threat intelligence reports by vendors such as RedCanary (who named it) and Microsoft (who track it as DEV-0856/Storm-0856) have covered the malware campaign in great detail.  In fact, the list of blogs I do recommend to read to catch up on this threat are as follows: https://redcanary.com/blog/raspberry-robin https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity https://blog.sekoia.io/raspberry-robins-botnet-second-life/ https://decoded.avast.io/janvojtesek/raspberry-robins-roshtyak-a-little-lesson-in-trickery/ https://research.checkpoint.com/2023/raspberry-robin-anti-evasion-how-to-exploit-analysis/ https://securityintelligence.com/posts/raspberry-robin-worm-dridex-malware/ https://blogs.cisco.com/security/raspberry-robin-highly-evasive-worm-spreads-over-e
Read more

Tracking Adversaries: Scattered Spider, the BlackCat affiliate

-
Image
After tracking the cybercrime threat landscape on a day-to-day basis for over four years now, it’s not that often anymore that something surprises me. But the latest trend of a suspected English-speaking big game hunting cybercriminal group, tracked under the moniker as Scattered Spider by CrowdStrike or 0ktapus by Group-IB, teaming up with a Russian-speaking ransomware group known as BlackCat (or ALPHV) has caught my attention. Background on Scattered Spider CrowdStrike introduced Scattered Spider in December 2022 and shared an update in January 2023 . These financially motivated English-speaking threat actors are known for their unique style of attacks, which usually all begin the same way, either via an SMS phishing message to harvest credentials or via an old school (yet still very effective) social engineering vishing call to get credentials or get the target to download malicious software and provide access. Other tricks Scattered Spider is known for includes multi-factor
Read more

Lessons from the iSOON Leaks

-
Image
  Introduction A Chinese Ministry of Public Security (MPS) contractor called  iSOON (also known as Anxun Information) that  specializes in network penetration research and related services has had its data leaked to GitHub. Based on the level of detail, leaked chat logs, amount of data, and corroboration from overlaps indicators of compromise (IOCs), there is a high level of confidence it is legit. Preliminary findings from less than one week since the leak revealed that it contains unprecedented insights into how the Chinese MPS operates by using Chinese commercial surveillance vendors and what their technical capabilities are. The Chinese MPS is China’s internal security service that primarily focuses on  internal and border security, counter-terrorism, surveillance. The MPS is comparable to the  Russian FSB, the US DHS or the UK’s MI5. The most interesting findings have come from iSOON’s product whitepapers and confidential slide deck presentations given to their MPS clients. About
Read more