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KLIMAX: Profiling Memory Write Patterns to Detect Keystroke-Harvesting Malware

机译:KLIMAX:对内存写入模式进行分析以检测按键捕获恶意软件

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Privacy-breaching malware is an ever-growing class of malicious applications that attempt to steal confidential data and leak them to third parties. One of the most prominent activities to acquire private user information is to eavesdrop and harvest user-issued keystrokes. Despite the serious threat involved, keylogging activities are challenging to detect in the general case. From an operating system perspective, their general behavior is no different than that of legitimate applications used to implement common end-user features like custom shortcut handling and keyboard remapping. As a result, existing detection techniques that attempt to model malware behavior based on system or library calls are largely ineffective. To address these concerns, we introduce a novel detection technique based on fine-grained profiling of memory write patterns. The intuition behind our model lies in data harvesting being a good predictor for sensitive information leakage. To demonstrate the viability of our approach, we have designed and implemented KLIMAX: a Kernel-Level Infrastructure for Memory and eXecution profiling. Our system supports proactive and reactive detection and can be transparently deployed online on a running Windows platform. Experimental results with real-world malware confirm the effectiveness of our approach.
机译:侵犯隐私的恶意软件是一类不断增长的恶意应用程序,它们试图窃取机密数据并将其泄漏给第三方。获取私人用户信息的最重要的活动之一就是窃听和收获用户发布的按键。尽管涉及严重威胁,但在一般情况下,键盘记录活动很难检测。从操作系统的角度来看,它们的一般行为与用于实现常见的最终用户功能(如自定义快捷键处理和键盘重新映射)的合法应用程序没有什么不同。结果,试图基于系统或库调用对恶意软件行为建模的现有检测技术在很大程度上无效。为了解决这些问题,我们介绍了一种基于内存写入模式的细粒度分析的新颖检测技术。我们模型背后的直觉在于,数据收集可以很好地预测敏感信息的泄漏。为了证明我们方法的可行性,我们设计并实现了KLIMAX:用于内存和执行性能分析的内核级基础结构。我们的系统支持主动和被动检测,可以透明地在线部署在运行中的Windows平台上。实际恶意软件的实验结果证实了我们方法的有效性。

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