Search Evasion Techniques
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Volume Shadow Copy Service (VSC,VSS) Deletion Anti-Forensic Defense Evasion [Mitre]
Deleting Volume Shadow Copy makes the forensic investigation more difficult in terms of the recovery of previous artifact evidence. In addition, attackers using ransomware often delete VSCs not to be able to recover the original files of the encrypted files from VSCs.
On the other hand, deleting by using vssadmin and WMIC is on a file system level, the …
Misusing Structured Exception Handlers Anti-Disassembly
Misusing Structured Exception Handlers is a technique used by malware to make it more difficult for security analysts to reverse engineer the code. Structured Exception Handlers (SEH) are functions that are used to handle exceptions in a program. These can be misused by malware to fool disassemblers and make it harder to analyze the code. One way this is done …
ExeStealth Packers
ExeStealth is a tool that encrypts files to avoid detection and hacking. Designed by WebToolMaster, this free software is simple to implement and one of the best anti-hacking tools on the market, which also makes it effective at hiding malware code in your system.
VMProtect Packers
VMProtect protects code by executing it on a virtual machine with non-standard architecture that makes it extremely difficult to analyze and crack the software. Besides that, VMProtect generates and verifies serial numbers, limits free upgrades and much more.
PELock Packers
PELock is a software security solution designed for the protection of any 32 bit Windows applications against cracking, tampering and reverse engineering analysis.
.Net Reactor Packers
.NET Reactor is used to prevent reverse engineering by adding different protection layers to .NET assemblies. Beside standard obfuscation techniques it includes special features like NecroBit, Virtualization, x86 Code Generation or Anti Tampering.
DTPacker Packers
DTPacker is a .NET packer or downloader which although seeing considerable variety in the first stage, uses a second stage with a fixed password as part of the decoding.
The main difference between a packer and a downloader is the location of the payload data which is embedded in the former and downloaded in the latter. DTPacker uses both …
CryptOne Packers
A packing software called CryptOne became popular among some major threat actors. It was first reported by Fox-IT that the group behind Wastedlocker has begun using it, as well as Netwalker, Gozi ISFB v3, ZLoader, Emotet, Dridex, and Smokeloader.
BobSoft Mini Delphi Packer Packers
The Delphi programming language can be an easy way to write applications and programs that leverage Windows API functions. In fact, some actors deliberately include the default libraries as a diversion to hamper static analysis and make the application "look legit" during dynamic analysis.
The packer goes to great lengths to ensure that it is not running in an …
INT 0x2D Anti-Debugging
When the instruction INT2D is executed, the exception EXCEPTION_BREAKPOINT is raised. Windows uses the EIP register as an exception address and then increments the EIP register value. Windows also examines the value of the EAX register while INT2D is executed.