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Domain Generation Algorithm
Domain generation algorithms (DGAs) are algorithms used by malware to generate a large number of domain names that can be used as communication channels with their command and control servers. These domain names are generated periodically, typically using a pseudorandom number generator.
The use of DGAs makes it difficult for law enforcement and other security actors to shut down …
Read moreVMCPUID
The VMCPUID instruction is a sophisticated mechanism often employed by malware to ascertain if it is operating within a virtual environment.
This instruction is part of the x86 architecture's virtual machine extensions (VMX) and is designed to provide information about the capabilities and status of the virtual machine.
By using VMCPUID, malware can adapt its behavior based on …
Read moreVPCEXT
The VPCEXT instruction (visual property container extender) is another anti–virtual machine trick used by malware to detect virtual systems. This technique is not documented. If the execution of the instruction does not generate an exception (illegal instruction), then the program is running on a virtual machine.
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