Search Evasion Techniques
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143 item(s) found so far for this keyword.
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.
…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.
…Avoiding Memory Scanners (Yara, Pe-sieve...) Others
Avoiding Memory Scanners is a technique that enables malware creators to bypass the detection of endpoint security software and reverse engineers by using memory scanning to locate shellcode and malware in Windows memory.
The technique involves understanding how memory scanners work and implementing a stable evasion method for each of the memory scanning tools, such as PE-sieve, MalMemDetect, Moneta, …
Hide Artifacts: Hidden Files and Directories Defense Evasion [Mitre]
Adversaries may set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users …
Hide Artifacts: Email Hiding Rules Defense Evasion [Mitre]
Adversaries may use email rules to hide inbound emails in a compromised user's mailbox. Many email clients allow users to create inbox rules for various email functions, including moving emails to other folders, marking emails as read, or deleting emails. Rules may be created or modified within email clients or through external features such as the New-InboxRule or Set-InboxRule PowerShell …
Hide Artifacts: Process Argument Spoofing Defense Evasion [Mitre]
Adversaries may attempt to hide process command-line arguments by overwriting process memory. Process command-line arguments are stored in the process environment block (PEB), a data structure used by Windows to store various information about/used by a process. The PEB includes the process command-line arguments that are referenced when executing the process. When a process is created, defensive tools/sensors that monitor …
Hijack Execution Flow: Path Interception by PATH Environment Variable Defense Evasion [Mitre]
Adversaries may execute their own malicious payloads by hijacking environment variables used to load libraries. Adversaries may place a program in an earlier entry in the list of directories stored in the PATH environment variable, which Windows will then execute when it searches sequentially through that PATH listing in search of the binary that was called from a script or …
Hijack Execution Flow: Path Interception by Search Order Hijacking Defense Evasion [Mitre]
Adversaries may execute their own malicious payloads by hijacking the search order used to load other programs. Because some programs do not call other programs using the full path, adversaries may place their own file in the directory where the calling program is located, causing the operating system to launch their malicious software at the request of the calling program.
…Hijack Execution Flow: Path Interception by Unquoted Path Defense Evasion [Mitre]
Adversaries may execute their own malicious payloads by hijacking vulnerable file path references. Adversaries can take advantage of paths that lack surrounding quotations by placing an executable in a higher level directory within the path, so that Windows will choose the adversary's executable to launch.
Service paths and shortcut paths may also be vulnerable to path interception if the …