PESpin Packers

PESpin is a Windows executable files protector, compressor coded in Win32ASM using MASM. Overall, this application will enable the compression of the entire executable - code, data, and resources, thus leaving the file protected against patching or disassembling.

NLS Code Injection Through Registry Process Manipulating

Dll injection through registry modification of NLS code page ID is a technique used by malware to inject a malicious DLL into a process by modifying the NLS code page ID in the registry.

There are two ways to accomplish this technique: 1. Calling the SetThreadLocale function and setting up an export function named NlsDllCodePageTranslation, where the main …

CloudEye/DarkEye Packers

CloudEyE, an evolved version of DarkEyE, allows threat actors to use different types of malware of their choice and make it undetectable to anti-virus solutions. This program is being sold by legitimate Italian company which markets it as a tool for developers that want to protect their program from piracy and reverse engineering. The tutorials published and forum posts about …

Hijack Execution Flow: DLL Search Order Hijacking Defense Evasion [Mitre]

Adversaries may execute their own malicious payloads by hijacking the search order used to load DLLs. Windows systems use a common method to look for required DLLs to load into a program. Hijacking DLL loads may be for the purpose of establishing persistence as well as elevating privileges and/or evading restrictions on file execution.

There are many ways an …

Mark-Of-The-Web (MOTW) Bypass Antivirus/EDR Evasion

Mark-of-the-Web (MOTW) is a security feature originally introduced by Internet Explorer. When downloading a file, Internet Explorer creates an ADS named Zone.Identifier and adds a ZoneId to this stream to indicate from which zone the file originates. It is used on Windows OS to trigger a Windows Defender SmartScreen detection and raise an alert to the user about the file.

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Domain Fronting Network Evasion Defense Evasion [Mitre]

Domain fronting is a technique used to hide the true destination of internet traffic. It may be used to hide the real destination of an offensive payload or is could be used to bypass censorship or any form of network restriction. The technique may be used through CDN infrastructure or on any infrastructure that perform separation between SSL and http …

Domain Policy Modification: Group Policy Modification Defense Evasion [Mitre]

Adversaries may modify Group Policy Objects (GPOs) to subvert the intended discretionary access controls for a domain, usually with the intention of escalating privileges on the domain. Group policy allows for centralized management of user and computer settings in Active Directory (AD). GPOs are containers for group policy settings made up of files stored within a predicable network path \\SYSVOL\\Policies.

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Domain Policy Modification: Domain Trust Modification Defense Evasion [Mitre]

Adversaries may add new domain trusts or modify the properties of existing domain trusts to evade defenses and/or elevate privileges. Domain trust details, such as whether or not a domain is federated, allow authentication and authorization properties to apply between domains for the purpose of accessing shared resources. These trust objects may include accounts, credentials, and other authentication material applied …

Return Address Spoofing Antivirus/EDR Evasion

Return Address Spoofing is a technique used in x64 architecture to bypass the limitations of the x64 fastcall mechanism. The traditional method of spoofing return addresses in x86 (e.g. using a ret in a game module as a trampoline) is not feasible in x64 due to caller cleanup and red zone.

To overcome this, the code creates a temporary …

Windows File and Directory Permissions Modification Defense Evasion [Mitre]

Adversaries may modify file or directory permissions/attributes to evade access control lists (ACLs) and access protected files. File and directory permissions are commonly managed by ACLs configured by the file or directory owner, or users with the appropriate permissions. File and directory ACL implementations vary by platform, but generally explicitly designate which users or groups can perform which actions (read, …

Search Evasion Techniques

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