Search Evasion Techniques
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17 item(s) found so far for this keyword.
System Binary Proxy Execution: Rundll32 Defense Evasion [Mitre]
Adversaries may abuse rundll32.exe to proxy execution of malicious code. Using rundll32.exe, vice executing directly (i.e. Shared Modules), may avoid triggering security tools that may not monitor execution of the rundll32.exe process because of allowlists or false positives from normal operations. Rundll32.exe is commonly associated with executing DLL payloads (ex: rundll32.exe {DLLname, DLLfunction}).
Rundll32.exe can also be used to execute …
System Binary Proxy Execution: Regsvr32 Defense Evasion [Mitre]
Adversaries may abuse Regsvr32.exe to proxy execution of malicious code. Regsvr32.exe is a command-line program used to register and unregister object linking and embedding controls, including dynamic link libraries (DLLs), on Windows systems. The Regsvr32.exe binary may also be signed by Microsoft.
Malicious usage of Regsvr32.exe may avoid triggering security tools that may not monitor execution of, and modules loaded …
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 …
Use Alternate Authentication Material: Pass the Ticket Defense Evasion [Mitre]
Adversaries may "pass the ticket" using stolen Kerberos tickets to move laterally within an environment, bypassing normal system access controls. Pass the ticket (PtT) is a method of authenticating to a system using Kerberos tickets without having access to an account's password. Kerberos authentication can be used as the first step to lateral movement to a remote system.
When preforming …
System Script Proxy Execution: PubPrn Defense Evasion [Mitre]
Adversaries may use PubPrn to proxy execution of malicious remote files. PubPrn.vbs is a Visual Basic script that publishes a printer to Active Directory Domain Services. The script may be signed by Microsoft and is commonly executed through the Windows Command Shell via Cscript.exe. For example, the following code publishes a printer within the specified domain: cscript pubprn Printer1 LDAP://CN=Container1,DC=Domain1,DC=Com. …
Obfuscated Files or Information: Binary Padding Defense Evasion [Mitre]
Adversaries may use binary padding to add junk data and change the on-disk representation of malware. This can be done without affecting the functionality or behavior of a binary, but can increase the size of the binary beyond what some security tools are capable of handling due to file size limitations.
Binary padding effectively changes the checksum of the file …
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 …
Hijack Execution Flow: DLL Side-Loading Defense Evasion [Mitre]
Adversaries may execute their own malicious payloads by side-loading DLLs. Similar to DLL Search Order Hijacking, side-loading involves hijacking which DLL a program loads. But rather than just planting the DLL within the search order of a program then waiting for the victim application to be invoked, adversaries may directly side-load their payloads by planting then invoking a legitimate application …
System Binary Proxy Execution: Mshta Defense Evasion [Mitre]
Adversaries may abuse mshta.exe to proxy execution of malicious .hta files and Javascript or VBScript through a trusted Windows utility. There are several examples of different types of threats leveraging mshta.exe during initial compromise and for execution of code.
Mshta.exe is a utility that executes Microsoft HTML Applications (HTA) files. HTAs are standalone applications that execute using the same models …
Indicator Removal: Clear Windows Event Logs Defense Evasion [Mitre] Anti-Forensic
Event logging is a process that records important software and hardware events from various sources and stores them in a centralized location called an event log. This service is commonly used by applications and operating systems to track and troubleshoot issues, and can be a valuable tool for forensic investigations.
Event logs can provide valuable information about the actions taken …