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By Jonathan Care, Juliet Edgar in Internal threats in open-source software — Jun 6, 2025

Unusual Appetites, Close to the Edge, The Exploitation of Innocence, Getting Fooled Again, Hard Lessons, Discordant Games, and Mischief Regenerated. It's CISO Intelligence for Friday, 6th June 2025.

An unexpected twist in the tale, when trouble is far too close for comfort, naivety is a very human trait, getting caught by old-school deception, learning painful lessons, a merry but painful dance, and foes not dead: just sleeping.

Unusual Appetites, Close to the  Edge, The Exploitation of Innocence, Getting Fooled Again, Hard Lessons, Discordant Games, and Mischief Regenerated. It's CISO Intelligence for Friday, 6th June 2025.
Photo by Dusan Ristic / Unsplash

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"Gives me everything I need to be informed about a topic" - UK.Gov

Table of Contents

  1. The Strange Tale of ischhfd83: When Cybercriminals Eat Their Own
  2. US Government Login Portal: One Click From Catastrophe
  3. How Threat Actors Exploit Human Trust: A Breakdown of the 'Prove You Are Human' Malware Scheme
  4. £47 Million Laugh – The Big HMRC Phishing Haul
  5. Germany Fines Vodafone: "That’ll Teach Ya!"
  6. The "Play" is Out of Tune: Ransomware's New Symphonic Dissonance
  7. Roundcube Webmail's Houdini Act: A Decade-old Vulnerability Finally Surfaces

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The Strange Tale of ischhfd83: When Cybercriminals Eat Their Own

It's not just the hackers who need to watch their backs – karma is the ultimate code!

What You Need to Know

In a bewildering turn of events, cybercriminals are now preying on their own kin. Sakura RAT, a seemingly innocuous open-source malware hosted on GitHub, is revealed to be a double-dealer. It's packed with malevolent code designed to backdoor its aspiring adopters—effectively cyber wolves donning wolf costumes. Action is needed to audit and secure your systems against such threats.

CISO focus: Internal threats in open-source software
Sentiment: Strong negative
Time to Impact: Immediate


In an unprecedented twist of cyber irony, researchers at Sophos X-Ops have unearthed an amusingly disconcerting plot twist in the realm of cybercrime with the infectious setup of Sakura RAT. Under the guise of being useful malware, it turns to prey upon those who dare to compile it, embedding infostealers and additional Remote Access Trojans (RATs) to exploit the very fabric of their craft.

The Unveiling Tale of Sakura RAT

Sophos reported being questioned by its customers regarding the protection against the so-called “sophisticated” Sakura RAT, heavily publicized for its anti-detection capabilities. However, what was perceived as fearsome stealth turned out to be a booby trap for cybercriminals themselves. Upon investigation, it was unveiled that the Sakura RAT repository on GitHub was a honeypot designed to bait unsuspecting fledgling hackers into ensnaring themselves in a backdoor loop of further exposure to malicious actors.

A Web of Deceit and Deception

A deep dive revealed a sprawling web woven by the purveyor of these contaminated gifts, ischhfd83. Associating with over a hundred similarly tampered repositories, the exploitator seemed fixated on turning the tables. What seemed like a casual rogue operation heralded a deeper insight into the turbulent ecosystem where even criminals aren't safe from their ilk.

Listing Out Multiple Fronts:

  • Backdoored Tools: Arsenal that included attack tools, seemingly empowering those eager for malfeasance.
  • Gaming Cheats: Preying on the lure of cheating, fueling another segmet of covert players.

Implications for Cyber Defense

The revelations around Sakura RAT signify a critical alert for cybersecurity practices concerning open-source software. Even when playing grey shades, the borderlines between attacker and victim blur, causing unexpected vulnerabilities within supposedly straightforward cyber defenses. It raises important questions on due diligence when incorporating public domain tools into secure environments.

Key Recommendations

  1. Heightened Vigilance: Utilize comprehensive threat intelligence systems to identify and neutralize threats posed by fractured repositories.

  2. Rigorous Vetting: Ensure robust vetting processes for open-source tools before they are incorporated into your security infrastructure.

  3. Stay Informed: Keep abreast of threat actors' evolving tactics—just because you're not paranoid doesn't mean installations aren't after you.

Tying up Loose Ends

In a poetic note-entry to these bizzare plots, the hunters find themselves ensnared, much like proverbial Aesopian tales of cleverness over-licked to foolishness. As the thread of laughs winds back to this tangled web, beware wanderers; this rabbit hole descends deep.


Vendor Diligence Questions

  1. Can the software repositories your solution relies upon be fully verified and authenticated for backdoors or malicious insertions?

  2. What steps do you take to ensure that your open-source dependencies are screened for malicious content before deployment?

  3. How do you maintain and update your systems to adapt to emerging threats that target open-source vulnerabilities?**

Action Plan

  • Audit and Patch: Initiate an immediate audit of all open-source tools integrated into your organization’s systems. Identify potential threats of backdoors and apply necessary patches.

  • Collaborate & Educate: Establish collaborative training sessions with your team's developers to convey the risks associated with open-source software, along with strategies to mitigate associated threats.

  • Update Protocols: Re-evaluate your organization’s risk assessment and threat monitoring protocols to include newly identified threats targeting the cybercriminal community.


Source: Sophos Article

Acknowledgements:
This analysis draws upon detailed investigations provided by:

  1. Sophos X-Ops’ comprehensive threat assessments.
  2. Insights from open-source cybersecurity discussions across forums.
  3. Contemporary articles exploring the dichotomy of open-source environments.

In the game of cyber thrones, the veritable reminder echoes: trust, but verify—especially if the gift is free and open-source.


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Previous

False Pretences, Shields Up, Same Tools-Different Uses, Big Steps Forward, Trust Issues, and Malevolent Squatting. It's CISO Intelligence for Wednesday, 4th June 2025.

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Same: The Cloning War. A Fascinating Read for Saturday 7th June 2025.

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