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  1. Frameworks
  2. >ATTACK
  3. >Defense Evasion
  4. >ATTACK-T1221
ATTACK-T1221Active

Template Injection

Statement

Adversaries may create or modify references in user document templates to conceal malicious code or force authentication attempts. For example, Microsoft’s Office Open XML (OOXML) specification defines an XML-based format for Office documents (.docx, xlsx, .pptx) to replace older binary formats (.doc, .xls, .ppt). OOXML files are packed together ZIP archives compromised of various XML files, referred to as parts, containing properties that collectively define how a document is rendered.(Citation: Microsoft Open XML July 2017)

Properties within parts may reference shared public resources accessed via online URLs. For example, template properties may reference a file, serving as a pre-formatted document blueprint, that is fetched when the document is loaded.

Adversaries may abuse these templates to initially conceal malicious code to be executed via user documents. Template references injected into a document may enable malicious payloads to be fetched and executed when the document is loaded.(Citation: SANS Brian Wiltse Template Injection) These documents can be delivered via other techniques such as Phishing and/or Taint Shared Content and may evade static detections since no typical indicators (VBA macro, script, etc.) are present until after the malicious payload is fetched.(Citation: Redxorblue Remote Template Injection) Examples have been seen in the wild where template injection was used to load malicious code containing an exploit.(Citation: MalwareBytes Template Injection OCT 2017)

Adversaries may also modify the <code>*\template</code> control word within an .rtf file to similarly conceal then download malicious code. This legitimate control word value is intended to be a file destination of a template file resource that is retrieved and loaded when an .rtf file is opened. However, adversaries may alter the bytes of an existing .rtf file to insert a template control word field to include a URL resource of a malicious payload.(Citation: Proofpoint RTF Injection)(Citation: Ciberseguridad Decoding malicious RTF files)

This technique may also enable Forced Authentication by injecting a SMB/HTTPS (or other credential prompting) URL and triggering an authentication attempt.(Citation: Anomali Template Injection MAR 2018)(Citation: Talos Template Injection July 2017)(Citation: ryhanson phishery SEPT 2016)

Location

Tactic
Defense Evasion

Technique Details

Identifier
ATTACK-T1221
ATT&CK Page
View on MITRE

Tactics

Defense Evasion

Platforms

Windows

Detection

Template Injection Detection - Windows

Mitigations

Antivirus/Antimalware: Antivirus/Antimalware solutions utilize signatures, heuristics, and behavioral analysis to detect, block, and remediate malicious software, including viruses, trojans, ransomware, and spyware. These solutions continuously monitor endpoints and systems for known malicious patterns and suspicious behaviors that indicate compromise. Antivirus/Antimalware software should be deployed across all devices, with automated updates to ensure protection against the latest threats. This mitigation can be implemented through the following measures:

Signature-Based Detection:

  • Implementation: Use predefined signatures to identify known malware based on unique patterns such as file hashes, byte sequences, or command-line arguments. This method is effective against known threats.
  • Use Case: When malware like "Emotet" is detected, its signature (such as a specific file hash) matches a known database of malicious software, triggering an alert and allowing immediate quarantine of the infected file.

Heuristic-Based Detection:

  • Implementation: Deploy heuristic algorithms that analyze behavior and characteristics of files and processes to identify potential malware, even if it doesn’t match a known signature.
  • Use Case: If a program attempts to modify multiple critical system files or initiate suspicious network communications, heuristic analysis may flag it as potentially malicious, even if no specific malware signature is available.

Behavioral Detection (Behavior Prevention):

  • Implementation: Use behavioral analysis to detect patterns of abnormal activities, such as unusual system calls, unauthorized file encryption, or attempts to escalate privileges.
  • Use Case: Behavioral analysis can detect ransomware attacks early by identifying behavior like mass file encryption, even before a specific ransomware signature has been identified.

Real-Time Scanning:

  • Implementation: Enable real-time scanning to automatically inspect files and network traffic for signs of malware as they are accessed, downloaded, or executed.
  • Use Case: When a user downloads an email attachment, the antivirus solution scans the file in real-time, checking it against both signatures and heuristics to detect any malicious content before it can be opened.

Cloud-Assisted Threat Intelligence:

  • Implementation: Use cloud-based threat intelligence to ensure the antivirus solution can access the latest malware definitions and real-time threat feeds from a global database of emerging threats.
  • Use Case: Cloud-assisted antivirus solutions quickly identify newly discovered malware by cross-referencing against global threat databases, providing real-time protection against zero-day attacks.

Tools for Implementation:

  • Endpoint Security Platforms: Use solutions such as EDR for comprehensive antivirus/antimalware protection across all systems.
  • Centralized Management: Implement centralized antivirus management consoles that provide visibility into threat activity, enable policy enforcement, and automate updates.
  • Behavioral Analysis Tools: Leverage solutions with advanced behavioral analysis capabilities to detect malicious activity patterns that don’t rely on known signatures.

Network Intrusion Prevention: Use intrusion detection signatures to block traffic at network boundaries.

User Training: User Training involves educating employees and contractors on recognizing, reporting, and preventing cyber threats that rely on human interaction, such as phishing, social engineering, and other manipulative techniques. Comprehensive training programs create a human firewall by empowering users to be an active component of the organization's cybersecurity defenses. This mitigation can be implemented through the following measures:

Create Comprehensive Training Programs:

  • Design training modules tailored to the organization's risk profile, covering topics such as phishing, password management, and incident reporting.
  • Provide role-specific training for high-risk employees, such as helpdesk staff or executives.

Use Simulated Exercises:

  • Conduct phishing simulations to measure user susceptibility and provide targeted follow-up training.
  • Run social engineering drills to evaluate employee responses and reinforce protocols.

Leverage Gamification and Engagement:

  • Introduce interactive learning methods such as quizzes, gamified challenges, and rewards for successful detection and reporting of threats.

Incorporate Security Policies into Onboarding:

  • Include cybersecurity training as part of the onboarding process for new employees.
  • Provide easy-to-understand materials outlining acceptable use policies and reporting procedures.

Regular Refresher Courses:

  • Update training materials to include emerging threats and techniques used by adversaries.
  • Ensure all employees complete periodic refresher courses to stay informed.

Emphasize Real-World Scenarios:

  • Use case studies of recent attacks to demonstrate the consequences of successful phishing or social engineering.
  • Discuss how specific employee actions can prevent or mitigate such attacks.

Disable or Remove Feature or Program: Disable or remove unnecessary and potentially vulnerable software, features, or services to reduce the attack surface and prevent abuse by adversaries. This involves identifying software or features that are no longer needed or that could be exploited and ensuring they are either removed or properly disabled. This mitigation can be implemented through the following measures:

Remove Legacy Software:

  • Use Case: Disable or remove older versions of software that no longer receive updates or security patches (e.g., legacy Java, Adobe Flash).
  • Implementation: A company removes Flash Player from all employee systems after it has reached its end-of-life date.

Disable Unused Features:

  • Use Case: Turn off unnecessary operating system features like SMBv1, Telnet, or RDP if they are not required.
  • Implementation: Disable SMBv1 in a Windows environment to mitigate vulnerabilities like EternalBlue.

Control Applications Installed by Users:

  • Use Case: Prevent users from installing unauthorized software via group policies or other management tools.
  • Implementation: Block user installations of unauthorized file-sharing applications (e.g., BitTorrent clients) in an enterprise environment.

Remove Unnecessary Services:

  • Use Case: Identify and disable unnecessary default services running on endpoints, servers, or network devices.
  • Implementation: Disable unused administrative shares (e.g., C$, ADMIN$) on workstations.

Restrict Add-ons and Plugins:

  • Use Case: Remove or disable browser plugins and add-ons that are not needed for business purposes.
  • Implementation: Disable Java and ActiveX plugins in web browsers to prevent drive-by attacks.
SP 800-53
SP800-53-CA-7relatedvia ctid-attack-to-sp800-53
SP800-53-CM-2relatedvia ctid-attack-to-sp800-53
SP800-53-CM-6relatedvia ctid-attack-to-sp800-53
SP800-53-CM-7relatedvia ctid-attack-to-sp800-53
SP800-53-CM-8relatedvia ctid-attack-to-sp800-53
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Defense Evasion183 controls
ATTACK-T1006Direct Volume AccessATTACK-T1014RootkitATTACK-T1027Obfuscated Files or InformationATTACK-T1027.001Binary PaddingATTACK-T1027.002Software PackingATTACK-T1027.003SteganographyATTACK-T1027.004Compile After DeliveryATTACK-T1027.005Indicator Removal from ToolsATTACK-T1027.006HTML SmugglingATTACK-T1027.007Dynamic API ResolutionATTACK-T1027.008Stripped PayloadsATTACK-T1027.009Embedded PayloadsATTACK-T1027.010Command ObfuscationATTACK-T1027.011Fileless StorageATTACK-T1027.012LNK Icon SmugglingATTACK-T1027.013Encrypted/Encoded FileATTACK-T1027.014Polymorphic CodeATTACK-T1027.015CompressionATTACK-T1027.016Junk Code InsertionATTACK-T1027.017SVG SmugglingATTACK-T1036MasqueradingATTACK-T1036.001Invalid Code SignatureATTACK-T1036.002Right-to-Left OverrideATTACK-T1036.003Rename Legitimate UtilitiesATTACK-T1036.004Masquerade Task or ServiceATTACK-T1036.005Match Legitimate Resource Name or LocationATTACK-T1036.006Space after FilenameATTACK-T1036.007Double File ExtensionATTACK-T1036.008Masquerade File TypeATTACK-T1036.009Break Process TreesATTACK-T1036.010Masquerade Account NameATTACK-T1036.011Overwrite Process ArgumentsATTACK-T1036.012Browser FingerprintATTACK-T1055Process InjectionATTACK-T1055.001Dynamic-link Library InjectionATTACK-T1055.002Portable Executable InjectionATTACK-T1055.003Thread Execution HijackingATTACK-T1055.004Asynchronous Procedure CallATTACK-T1055.005Thread Local StorageATTACK-T1055.008Ptrace System CallsATTACK-T1055.009Proc MemoryATTACK-T1055.011Extra Window Memory InjectionATTACK-T1055.012Process HollowingATTACK-T1055.013Process DoppelgängingATTACK-T1055.014VDSO HijackingATTACK-T1055.015ListPlantingATTACK-T1070Indicator RemovalATTACK-T1070.001Clear Windows Event LogsATTACK-T1070.002Clear Linux or Mac System LogsATTACK-T1070.003Clear Command HistoryATTACK-T1070.004File DeletionATTACK-T1070.005Network Share Connection RemovalATTACK-T1070.006TimestompATTACK-T1070.007Clear Network Connection History and ConfigurationsATTACK-T1070.008Clear Mailbox DataATTACK-T1070.009Clear PersistenceATTACK-T1070.010Relocate MalwareATTACK-T1078Valid AccountsATTACK-T1078.001Default AccountsATTACK-T1078.002Domain AccountsATTACK-T1078.003Local AccountsATTACK-T1078.004Cloud AccountsATTACK-T1112Modify RegistryATTACK-T1127Trusted Developer Utilities Proxy ExecutionATTACK-T1127.001MSBuildATTACK-T1127.002ClickOnceATTACK-T1127.003JamPlusATTACK-T1134Access Token ManipulationATTACK-T1134.001Token Impersonation/TheftATTACK-T1134.002Create Process with TokenATTACK-T1134.003Make and Impersonate TokenATTACK-T1134.004Parent PID SpoofingATTACK-T1134.005SID-History InjectionATTACK-T1140Deobfuscate/Decode Files or InformationATTACK-T1197BITS JobsATTACK-T1202Indirect Command ExecutionATTACK-T1205Traffic SignalingATTACK-T1205.001Port KnockingATTACK-T1205.002Socket FiltersATTACK-T1207Rogue Domain ControllerATTACK-T1211Exploitation for Defense EvasionATTACK-T1216System Script Proxy ExecutionATTACK-T1216.001PubPrnATTACK-T1216.002SyncAppvPublishingServerATTACK-T1218System Binary Proxy ExecutionATTACK-T1218.001Compiled HTML FileATTACK-T1218.002Control PanelATTACK-T1218.003CMSTPATTACK-T1218.004InstallUtilATTACK-T1218.005MshtaATTACK-T1218.007MsiexecATTACK-T1218.008OdbcconfATTACK-T1218.009Regsvcs/RegasmATTACK-T1218.010Regsvr32ATTACK-T1218.011Rundll32ATTACK-T1218.012VerclsidATTACK-T1218.013MavinjectATTACK-T1218.014MMCATTACK-T1218.015Electron ApplicationsATTACK-T1220XSL Script ProcessingATTACK-T1221Template InjectionATTACK-T1222File and Directory Permissions ModificationATTACK-T1222.001Windows File and Directory Permissions ModificationATTACK-T1222.002Linux and Mac File and Directory Permissions ModificationATTACK-T1480Execution GuardrailsATTACK-T1480.001Environmental KeyingATTACK-T1480.002Mutual ExclusionATTACK-T1484Domain or Tenant Policy ModificationATTACK-T1484.001Group Policy ModificationATTACK-T1484.002Trust ModificationATTACK-T1497Virtualization/Sandbox EvasionATTACK-T1497.001System ChecksATTACK-T1497.002User Activity Based ChecksATTACK-T1497.003Time Based ChecksATTACK-T1535Unused/Unsupported Cloud RegionsATTACK-T1542Pre-OS BootATTACK-T1542.004ROMMONkitATTACK-T1542.005TFTP BootATTACK-T1548.006TCC ManipulationATTACK-T1550Use Alternate Authentication MaterialATTACK-T1550.001Application Access TokenATTACK-T1550.002Pass the HashATTACK-T1550.003Pass the TicketATTACK-T1550.004Web Session CookieATTACK-T1553Subvert Trust ControlsATTACK-T1553.001Gatekeeper BypassATTACK-T1553.002Code SigningATTACK-T1553.003SIP and Trust Provider HijackingATTACK-T1553.004Install Root CertificateATTACK-T1553.005Mark-of-the-Web BypassATTACK-T1553.006Code Signing Policy ModificationATTACK-T1562Impair DefensesATTACK-T1562.001Disable or Modify ToolsATTACK-T1562.002Disable Windows Event LoggingATTACK-T1562.003Impair Command History LoggingATTACK-T1562.004Disable or Modify System FirewallATTACK-T1562.006Indicator BlockingATTACK-T1562.007Disable or Modify Cloud FirewallATTACK-T1562.008Disable or Modify Cloud LogsATTACK-T1562.009Safe Mode BootATTACK-T1562.010Downgrade AttackATTACK-T1562.011Spoof Security AlertingATTACK-T1562.012Disable or Modify Linux Audit SystemATTACK-T1562.013Disable or Modify Network Device FirewallATTACK-T1564Hide ArtifactsATTACK-T1564.001Hidden Files and DirectoriesATTACK-T1564.002Hidden UsersATTACK-T1564.003Hidden WindowATTACK-T1564.004NTFS File AttributesATTACK-T1564.005Hidden File SystemATTACK-T1564.006Run Virtual InstanceATTACK-T1564.007VBA StompingATTACK-T1564.008Email Hiding RulesATTACK-T1564.009Resource ForkingATTACK-T1564.010Process Argument SpoofingATTACK-T1564.011Ignore Process InterruptsATTACK-T1564.012File/Path ExclusionsATTACK-T1564.013Bind MountsATTACK-T1564.014Extended AttributesATTACK-T1578Modify Cloud Compute InfrastructureATTACK-T1578.001Create SnapshotATTACK-T1578.002Create Cloud InstanceATTACK-T1578.003Delete Cloud InstanceATTACK-T1578.004Revert Cloud InstanceATTACK-T1578.005Modify Cloud Compute ConfigurationsATTACK-T1599Network Boundary BridgingATTACK-T1599.001Network Address Translation TraversalATTACK-T1600Weaken EncryptionATTACK-T1600.001Reduce Key SpaceATTACK-T1600.002Disable Crypto HardwareATTACK-T1601Modify System ImageATTACK-T1601.001Patch System ImageATTACK-T1601.002Downgrade System ImageATTACK-T1610Deploy ContainerATTACK-T1612Build Image on HostATTACK-T1620Reflective Code LoadingATTACK-T1622Debugger EvasionATTACK-T1647Plist File ModificationATTACK-T1656ImpersonationATTACK-T1666Modify Cloud Resource HierarchyATTACK-T1672Email SpoofingATTACK-T1678Delay ExecutionATTACK-T1679Selective Exclusion