![]() I have seen several "Högboo" saws before but they have all been fitted with hardwood handles. Tthis is the first I've seen with a plastic handle. This example was found in my native Finland, and as always seems to be the case around here, it is a crosscut saw filed 6 TPI or 7 PPI. I have yet to find one single premium Sandvik saw that would have been filed anything else than crosscut and the variation in teeth per inch is just one tooth per inch. I have no ideas why Sandvik though Finns only wanted crosscut saws and a fixed tooth configuration, and I'd be happy to be found wrong, but in three years of rust hunting I've had about 30-40 Sandvik 270 series hand saws, and I've never seen saws configured any differently. Since I'm trying to create a timeline for the Sandvik saw production, I have some theories which currently form the foundation of my studies. A general notion is that plastic handles are later than wooden handles. Well, this isn't entirely true, I fear, at leads not as far as Sandvik is concerned. This Högboo saw has a plastic handle but no hang hole. ![]() Högboo saws with wooden handles do have a hang hole. This doesn't have to mean that the hang hole was a later invention, but it is indicative enough to make me believe that there could either have been different handle materials used for different markets or that Sandvik wanted to pimp their saws in order to make more profit, hence reintroducing a wooden handle on certain models. The Högboo "etch" could also have been an attempt to make the saws more attractive. My theories are far from bullet proof, but as long as I'm making the assumptions myself, this will be my assumption. Popular virtualization evasion techniques.If you know better, please do let me know.In most cases, hackers "case out" their targets before attacking. They do this by collecting information about the system and internal network, which gives an idea of how they can profit from an attack and helps to plan further actions. Of course, the attackers need to be sure they have accessed a real workstation on a company's infrastructure, and not a mere sandbox-a virtual environment designed to analyze the behavior of executable files. That is why modern malware has capabilities for detecting and evading protection mechanisms, as well as for hiding malicious functionality if run in a sandbox or code analyzer. We have analyzed 36 malware families used by at least 23 APT groups around the world during the period from 2010 through the first half of 2020. The selection was made based on MITRE data and information about new malware samples analyzed by the PT Expert Security Center. In this research, we will show how sandbox evasion techniques have evolved in the last 10 years. The virtual machine has a built-in agent (special process) that manages the system, in addition to getting and passing events and artifacts of interest. When a new process is generated, the sandbox intercepts API function calls (changes to an address in process memory or changes to code in a function body). ![]() ![]() This approach has one significant drawback: the sandbox needs to conceal and protect agent-related objects from malware. These sandboxes use second level address translation (SLAT), a form of hardware-assisted virtualization built into CPUs. Mark the memory page anew to return it to the correct state.Analyze the memory state and extract information about an event.Intercept attempts to access marked memory regions (if this happens, an EPT violation error will occur and the guest machine will be stopped).Mark selected pages to separate EPT memory access rights from guest machine access rights.Identify important parts (for example, parts containing addresses or code of kernel functions).Įxamine memory pages of the guest machine.AMD processors support SLAT through Rapid Virtualization Indexing (RVI), while Intel's implementation is known as Extended Page Table (EPT).Įxtended page tables are nested between the guest physical memory and the host virtual memory.
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