[cb22] "The Present and Future of Coordinated Vulnerability Disclosure" Inter...CODE BLUE
While hackers have known the importance of sharing research to improve security for years, the importance of coordinated vulnerability disclosure is increasingly recognized by governments around the world. The principals of disclosure an protecting security researchers are common across borders, but different countries have some key differences. This panel will present a global perspective that may in turn inform key public policy and company behavior.
ENISA has published 'Coordinated Vulnerability Disclosure policies in the EU' in April 2022 . This report not only provides an objective introduction to the current state of coordinated vulnerability disclosure policies in the Member States of the European Union, but also introduces the operation of vulnerability disclosure in China, Japan and the USA. Based on these findings, the desirable and good practice elements of a coordinated vulnerability disclosure process are examined, followed by a discussion of the challenges and issues.
This session aims to share the contents of this report and clarify the challenges and future direction of operations in Japan, as well as national security and vulnerability handling issues in the US, in a panel discussion with representatives from various jurisdictions.
The panelists are involved in the practice of early warning partnership notified bodies in Japan, the authors of the above report in Europe and the contributors to the above report in the US.
In Japan, the issues of system awareness, incentives, increase in the number of outstanding cases in handling and so-called triage in handling vulnerabilities will be introduced.
From the United States, the Vulnerabilities Equities Process for National Security and the publication of a non-prosecution policy for vulnerability research will be introduced, as well as a historical background on the issue.
The aim is that the panel discussion will enable the audience to understand the international situation surrounding CVD, as well as future trends, in particular the important role of vulnerability in cybersecurity and the challenges faced by society around it.
[cb22] Are Embedded Devices Ready for ROP Attacks? -ROP verification for low-...CODE BLUE
Yuuma Taki is enrolled in the Hokkaido Information University Information Media Faculty of Information Media (4th year).
At university he is focusing on learning about security for lower-level components, such OS and CPU. In his third year of undergraduate school, he worked on trying to implement the OS security mechanism "KASLR", at Sechack365.
Currently, he is learning about ROP derivative technology and embedded equipment security.
[cb22] Under the hood of Wslink’s multilayered virtual machine en by Vladisla...CODE BLUE
In October 2021, we published the first analysis of Wslink – a unique loader likely linked to the Lazarus group. Most samples are packed and protected with an advanced virtual machine (VM) obfuscator; the samples contain no clear artifacts and we initially did not associate the obfuscation with a publicly known VM, but we later managed to connect it to CodeVirtualizer. This VM introduces several additional obfuscation techniques such as insertion of junk code, encoding of virtual operands, duplication of virtual opcodes, opaque predicates, merging of virtual instructions, and a nested VM.
Our presentation analyzes the internals of the VM and describes our semi automated approach to “see through” the obfuscation techniques in reasonable time. We demonstrate the approach on some bytecode from a protected sample and compare the results with a non-obfuscated sample, found subsequent to starting our analysis, confirming the method’s validity. Our solution is based on a known deobfuscation method that extracts the semantics of the virtual opcodes, using symbolic execution with simplifying rules. We further treat the bytecode chunks and some internal constructs of the VM as concrete values instead of as symbolic ones, enabling the known deobfuscation method to deal with the additional obfuscation techniques automatically.
[cb22] CloudDragon’s Credential Factory is Powering Up Its Espionage Activiti...CODE BLUE
Kimsuky is a North Korean APT possibly controlled by North Korea's Reconnaissance General Bureau. Based on reports from the Korea Internet & Security Agency (KISA) and other vendors, TeamT5 identified that Kimsuky's most active group, CloudDragon, built a workflow functioning as a "Credential Factory," collecting and exploiting these massive credentials.
The credential factory powers CloudDragon to start its espionage campaigns. CloudDragon's campaigns have aligned with DPRK's interests, targeting the organizations and key figures playing a role in the DPRK relationship. Our database suggested that CloudDragon has possibly infiltrated targets in South Korea, Japan, and the United States. Victims include think tanks, NGOs, media agencies, educational institutes, and many individuals.
CloudDragon's "Credential Factory" can be divided into three small cycles, "Daily Cycle," "Campaign Cycle," and "Post-exploit Cycle." The"Daily Cycle" can collect massive credentials and use the stolen credentials to accelerate its APT life cycle.
In the "Campaign Cycle," CloudDragon develops many new malware. While we responded to CloudDragon's incidents, we found that the actor still relied on BabyShark malware. CloudDragon once used BabyShark to deploy a new browser extension malware targeting victims' browsers. Moreover, CloudDragon is also developing a shellcode-based malware, Dust.
In the "Post-exploit Cycle," the actor relied on hacking tools rather than malicious backdoors. We also identified that the actor used remote desktop software to prevent detection.
In this presentation, we will go through some of the most significant operations conducted by CloudDragon, and more importantly, we will provide possible scenarios of future invasions for defense and detection.
[cb22] From Parroting to Echoing: The Evolution of China’s Bots-Driven Info...CODE BLUE
Social media is no doubt a critical battlefield for threat actors to launch InfoOps, especially in a critical moment such as wartime or the election season. We have seen Bot-Driven Information Operations (InfoOps, aka influence campaign) have attempted to spread disinformation, incite protests in the physical world, and doxxing against journalists.
China's Bots-Driven InfoOps, despite operating on a massive scale, are often considered to have low impact and very little organic engagement. In this talk, we will share our observations on these persistent Bots-Driven InfoOps and dissect their harmful disinformation campaigns circulated in cyberspace.
In the past, most bots-driven operations simply parroted narratives of the Chinese propaganda machine, mechanically disseminating the same propaganda and disinformation artifacts made by Chinese state media. However, recently, we saw the newly created bots turn to post artifacts in a livelier manner. They utilized various tactics, including reposting screenshots of forum posts and disguised as members of “Milk Tea Alliance,” to create a false appearance that such content is being echoed across cyberspace.
We particularly focus on an ongoing China's bots-driven InfoOps targeting Taiwan, which we dub "Operation ChinaRoot." Starting in mid-2021, the bots have been disseminating manipulated information about Taiwan's local politics and Covid-19 measures. Our further investigation has also identified the linkage between Operation ChinaRoot and other Chinese state-linked networks such as DRAGONBRIDGE and Spamouflage.
[cb22] Who is the Mal-Gopher? - Implementation and Evaluation of “gimpfuzzy”...CODE BLUE
Malwares written in Go is increasing every year. Go's cross-platform nature makes it an opportune language for attackers who wish to target multiple platforms. On the other hand, the statically linked libraries make it difficult to distinguish between user functions and libraries, making it difficult for analysts to analyze. This situation has increased the demand for Go malware classification and exploration.
In this talk, we will demonstrate the feasibility of computing similarity and classification of Go malware using a newly proposed method called gimpfuzzy. We have implemented "gimpfuzzy", which incorporates Fuzzy Hashing into the existing gimphash method. In this talk, we will verify the discrimination rate of the classification using the proposed method and confirm the validity of the proposed method by discussing some examples from the classified results. We will also discuss issues in Go-malware classification.
[cb22] Tracking the Entire Iceberg - Long-term APT Malware C2 Protocol Emulat...CODE BLUE
This document discusses the results of long-term scanning and analysis of Winnti 4.0 and ShadowPad malware command and control (C2) protocols. It finds that Winnti 4.0 C2s primarily use TLS, HTTPS, and HTTP, while ShadowPad variants primarily use TCP, HTTPS, and HTTP. Analysis of the protocols reveals encryption methods, packet structures, and server-side functionality. Over time, the number and distribution of active C2s changed, likely in response to research publications and incident response actions. The document advocates for anonymization techniques and merits and risks of future research publications.
[cb22] Fight Against Malware Development Life Cycle by Shusei Tomonaga and Yu...CODE BLUE
We are swamped with new types of malware every day. The goal of malware analysis is not to reveal every single detail of the malware. It is more important to develop tools for efficiency or introduce automation to avoid repeating the same analysis process. Therefore, malware analysts usually actively develop tools and build analysis systems. On the other hand, it costs a lot for such tool developments and system maintenance. Incident trends change daily, and malware keeps evolving. However, it is not easy to keep up with new threats. Malware analysts spend a long time maintaining their analysis systems, and it results in reducing their time for necessary analysis of new types of malware.
To solve these problems, we incorporate DevOps practices into malware analysis to reduce the cost of system maintenance by using CI/CD and Serverless. This presentation shares our experience on how CI/CD, Serverless, and other cloud technologies can be used to streamline malware analysis. Specifically, the following case studies are discussed.
* Malware C2 Monitoring
* Malware Hunting using Cloud
* YARA CI/CD system
* Malware Analysis System on Cloud
* Memory Forensic on Cloud
Through the above case studies, we will share the benefits and tips of using the cloud and show how to build a similar system using Infrastructure as Code (IaC). The audience will learn how to improve the efficiency of malware analysis and build a malware analysis system using Cloud infrastructure.
[cb22] What I learned from the direct confrontation with the adversaries who ...CODE BLUE
In November 2019, I started monitoring the Bitcoin operation by the adversaries who hid IP addresses of their C&C server in the blockchain. In June 2020, I started collaborating with Professor Christian Doerr of the Hasso Plattner Institute based on the idea of redirecting C&C server communication to a sinkhole server (called takeover), and we successfully achieved this in August. However, the adversaries quickly took evasive action, where they managed to implement an evasion mechanism in only two weeks and restarted their attack. Although we could not conduct our takeover, our monitoring system could worked well. The end of their attack was brought upon by the surge in Bitcoin prices. Due to the fees for the Bitcoin miners, a transaction had reduced the adversaries' profits, and we confirmed the last C&C update was in January 2021 and the abandonment of the attack infrastructure came in March. Since then, no similar attacks have been observed by my monitoring system.
Although this attack has already concluded and is unlikely to restart unless the value of Bitcoin declines, I would like to share the know-how I have learned through the direct confrontation with the adversaries. That is, at the time of the confrontation with them, this attack was highly novel, and the adversaries themselves did not fully understand the best solution for its' operation. They needed to evolve their tactics, techniques, and procedures (TTPs) while operating the system. We carefully analyzed their TTPs and tried to catch them off their guard. Even more troublesome was the need to understand as quickly as possible what they intended to do each time they were affected by the Bitcoin halving or making a simple operational error. This presentation is a culmination my insights learned from interactions with these adversaries and I am looking forward to sharing this information with everyone.
[cb22] SMARTIAN: Enhancing Smart Contract Fuzzing with Static and Dynamic Da...CODE BLUE
Smartian is a tool that enhances smart contract fuzzing with static and dynamic data-flow analyses. It integrates static analysis to identify promising sequences of function calls for generating initial fuzzing seeds. It then uses dynamic analysis to mutate function arguments to realize expected data flows across functions. Smartian implements bug oracles for 13 classes of smart contract bugs. Evaluation shows Smartian outperforms other fuzzers and symbolic executors on benchmarks with known bugs, demonstrating the effectiveness of integrating static and dynamic analyses for smart contract fuzzing.
[cb22] Scaling the Security Researcher to Eliminate OSS Vulnerabilities Once ...CODE BLUE
Imagine a world where a security researcher becomes aware of a security vulnerability, impacting thousands of Open Source Software (OSS) projects, and is enabled to both identify and fix them all at once. Now imagine a world where a vulnerability is introduced into your production code and a few moments later you receive an automated pull request to fix it. Hundreds of thousands of human hours are invested every year in finding common security vulnerabilities with relatively simple fixes. These vulnerabilities aren't sexy, cool, or new, we've known about them for years, but they're everywhere!
The scale of GitHub and tools like CodeQL (GitHub's code query language) enable one to scan for vulnerabilities across hundreds of thousands of OSS projects, but the challenge is how to scale the triaging, reporting, and fixing. Simply automating the creation of thousands of bug reports by itself isn't useful, and would be even more of a burden on volunteer maintainers of OSS projects. Ideally, the maintainers would be provided with not only information about the vulnerability, but also a fix in the form of an easily actionable pull request.
When facing a problem of this scale, what is the most efficient way to leverage researcher knowledge to fix the most vulnerabilities across OSS? This talk will cover a highly scalable solution - automated bulk pull request generation. We'll discuss the practical applications of this technique on real world OSS projects. We'll also cover technologies like CodeQL and OpenRewrite (a style-preserving refactoring tool created at Netflix and now developed by Moderne). Let's not just talk about vulnerabilities, let's actually fix them at scale.
This work is sponsored by the new Dan Kaminsky Fellowship; a fellowship created to celebrate Dan's memory and legacy by funding open-source work that makes the world a better (and more secure) place.
[cb22] Red light in the factory - From 0 to 100 OT adversary emulation by Vi...CODE BLUE
Since 2010 Stuxnet caused substantial damage to the nuclear program of Iran, ICS security issues have been raised. Lots of researchers dig into the hacking skills and path and those known attacks in the history and more malwares and events happened. Enterprises need an efficient way to find vulnerabilities but they might not have the budget for ICS pentesters , which need strong background knowledge , and all the fields they have. To solve this problem, we try to make a rare OT targeting , open source adversary emulation tool as a plugin on MITRE open source tool - Caldera. Users can easily combine IT attacks with our OT adversaries and change steps of attacks or send manual commands in the process.
We summarize the experience of reviewing over 20 factories traffic and analyzing 19 MITRE defined ICS malwares, PIPEDREAM/Incontroller in 2022. We found the main trend of ICS malwares changes from single protocol targeting to modularized , multiple protocols supporting. The actions in malwares can be summarized as a 4 stages attacking flow, We will explain it with the real attacks from malwares. We use the above conclusions to build automatic adversary emulation tool.
Now the tool already supports 10 common protocols and over 23 techniques on the MITRE ICS matrix , which is able to reproduce over 80% of defined ICS malware actions in OT. We also follow the 4 stages conclusion to add some attacks havent been used by any malwares. We have tested it on real oil ,gas ,water, electric power factory devices , protocol simulations for SCADA developers and honeypot. We will have a demo in this presentation.
[cb22] Lets Dance in the Cache Destabilizing Hash Table on Microsoft IIS by O...CODE BLUE
Hash Table, as the most fundamental Data Structure in Computer Science, is extensively applied in Software Architecture to store data in an associative manner. However, its architecture makes it prone to Collision Attacks. To deal with this problem, 25 years ago, Microsoft designed its own Dynamic Hashing algorithm and applied it everywhere in IIS, the Web Server from Microsoft, to serve various data from HTTP Stack. As Hash Table is everywhere, isn't the design from Microsoft worth scrutinizing?
We dive into IIS internals through months of Reverse-Engineering efforts to examine both the Hash Table implementation and the use of Hash Table algorithms. Several types of attacks are proposed and uncovered in our research, including (1) A specially designed Zero-Hash Flooding Attack against Microsoft's self-implemented algorithm. (2) A Cache Poisoning Attack based on the inconsistency between Hash-Keys. (3) An unusual Authentication Bypass based on a hash collision.
By understanding this talk, the audience won't be surprised why we can destabilize the Hash Table easily. The audience will also learn how we explore the IIS internals and will be surprised by our results. These results could not only make a default installed IIS Server hang with 100% CPU but also modify arbitrary HTTP responses through crafted HTTP request. Moreover, we'll demonstrate how we bypass the authentication requirement with a single, crafted password by colliding the identity cache!
[cb22] Keynote: Underwhelmed: Making Sense of the Overwhelming Challenge of C...CODE BLUE
As the security industry has grown we've seen every aspect of our world become more complicated and more overwhelming. We're consistently promised solutions and technology to make our lives easier, to stop the attacker, to catch them quicker, to automate the pain away, but the reality falls flat. Frankly, it's underwhelming. Understanding where your program stands today, where you should spend time and resources, and how best to reduce risk to your organization are key aspects of any program. Join us to discuss and discover what some of the largest organizations in the world are doing to try to make sense of it all, and how they got there.
[cb22] Understanding the Chinese underground card shop ecosystem and becoming...CODE BLUE
Personal Identifiable Information (PII) leaks have become more frequent in recent years, and losses from credit card fraud in 2021 have set records respectively in Taiwan and Japan. Where did this information get leaked and sold in the first place?
The term "Dark web" refers to websites inaccessible without the use of Tor protocol, and given added privacy and anonymity while using Tor, and marketplaces in it are proven to be very attractive to criminals.
An anonymous researcher will share experiences of dealing with vendors from card shops on marketplaces among dark web, focused on insights of shops selling Taiwanese and Japanese PIIs, and therefore, TTPs of hackers from these card shops.
We hope to inspire audiences to rethink how to reduce credit card frauds.
[CB21] Last Mile Problem: Third Party Scripts included by Web Marketers and t...CODE BLUE
In recent years, Shift Left Security has been pushing to integrate security early in the development of a product. At the same time, web marketing team's toolset has developped more and more to the "edge", in order to allow for faster iteration. Their activities often require the inclusion of targeted, sometimes temporary but powerful scripts deployed to customer-facing applications, without security team's knowledge. In this talk I'll show how things could go wrong, and the first steps that your security team can take to remedy to this lack of visibility, without impeding the work of marketing.