Search Evasion Techniques
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Modify Registry Defense Evasion [Mitre]
Adversaries may interact with the Windows Registry to hide configuration information within Registry keys, remove information as part of cleaning up, or as part of other techniques to aid in persistence and execution.
Access to specific areas of the Registry depends on account permissions, some requiring administrator-level access. The built-in Windows command-line utility Reg may be used for local or …
Hijack Execution Flow: Services Registry Permissions Weakness Defense Evasion [Mitre]
Adversaries may execute their own malicious payloads by hijacking the Registry entries used by services. Adversaries may use flaws in the permissions for Registry keys related to services to redirect from the originally specified executable to one that they control, in order to launch their own code when a service starts. Windows stores local service configuration information in the Registry …
Image File Execution Options Injection Process Manipulating
Image File Execution Options Injection, also known as IFEO Injection, is a technique used by malware to evade detection and persist on a compromised system.
The technique involves modifying the Image File Execution Options (IFEO) registry key, which is used by the Windows operating system to set debugging options for executable files. When an executable file is launched, the operating …
Indicator Removal: Clear Persistence Defense Evasion [Mitre]
Adversaries may clear artifacts associated with previously established persistence on a host system to remove evidence of their activity. This may involve various actions, such as removing services, deleting executables, Modify Registry, Plist File Modification, or other methods of cleanup to prevent defenders from collecting evidence of their persistent presence.
In some instances, artifacts of persistence may also be removed …
Detecting Virtual Environment Artefacts Sandbox Evasion
Qemu registers some artifacts into the registry. A malware can detect the Qemu installation with a look at the registry key HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0 with the value of Identifier and the data of QEMU or HARDWARE\\Description\\System with a value of SystemBiosVersion and data of QEMU.
The VirtualBox Guest addition leaves many artifacts …
Windows Event Log Evasion via Native APIs Anti-Forensic
Attackers can leverage native Windows API calls to install malicious services without generating correlating entries in the event log. Using native APIs to install services instead of the standard API calls allow attackers to bypass security controls and event logging. This technique was utilised by Stuxnet.
Services are typically created through a standard Windows API call CreateServiceA or CreateService. …
Impair Defenses: Disable or Modify Tools Defense Evasion [Mitre]
Adversaries may modify and/or disable security tools to avoid possible detection of their malware/tools and activities. This may take many forms, such as killing security software processes or services, modifying / deleting Registry keys or configuration files so that tools do not operate properly, or other methods to interfere with security tools scanning or reporting information. Adversaries may also disable …
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 path …
Impair Defenses: Disable or Modify System Firewall Defense Evasion [Mitre]
Adversaries may disable or modify system firewalls in order to bypass controls limiting network usage. Changes could be disabling the entire mechanism as well as adding, deleting, or modifying particular rules. This can be done numerous ways depending on the operating system, including via command-line, editing Windows Registry keys, and Windows Control Panel.
Modifying or disabling a system firewall may …
Hide Artifacts: Hidden Users Defense Evasion [Mitre]
Adversaries may use hidden users to hide the presence of user accounts they create or modify. Administrators may want to hide users when there are many user accounts on a given system or if they want to hide their administrative or other management accounts from other users.
Adversaries may hide user accounts in Windows. Adversaries can set the HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList …