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  1. Frameworks
  2. >ATTACK
  3. >Reconnaissance
  4. >ATTACK-T1598.003
ATTACK-T1598.003Active

Spearphishing Link

Statement

Adversaries may send spearphishing messages with a malicious link to elicit sensitive information that can be used during targeting. Spearphishing for information is an attempt to trick targets into divulging information, frequently credentials or other actionable information. Spearphishing for information frequently involves social engineering techniques, such as posing as a source with a reason to collect information (ex: Establish Accounts or Compromise Accounts) and/or sending multiple, seemingly urgent messages.

All forms of spearphishing are electronically delivered social engineering targeted at a specific individual, company, or industry. In this scenario, the malicious emails contain links generally accompanied by social engineering text to coax the user to actively click or copy and paste a URL into a browser.(Citation: TrendMictro Phishing)(Citation: PCMag FakeLogin) The given website may be a clone of a legitimate site (such as an online or corporate login portal) or may closely resemble a legitimate site in appearance and have a URL containing elements from the real site. URLs may also be obfuscated by taking advantage of quirks in the URL schema, such as the acceptance of integer- or hexadecimal-based hostname formats and the automatic discarding of text before an “@” symbol: for example, hxxp://google.com@1157586937.(Citation: Mandiant URL Obfuscation 2023)

Adversaries may also embed “tracking pixels,” "web bugs," or "web beacons" within phishing messages to verify the receipt of an email, while also potentially profiling and tracking victim information such as IP address.(Citation: NIST Web Bug)(Citation: Ryte Wiki) These mechanisms often appear as small images (typically one pixel in size) or otherwise obfuscated objects and are typically delivered as HTML code containing a link to a remote server.(Citation: Ryte Wiki)(Citation: IAPP)

Adversaries may also be able to spoof a complete website using what is known as a "browser-in-the-browser" (BitB) attack. By generating a fake browser popup window with an HTML-based address bar that appears to contain a legitimate URL (such as an authentication portal), they may be able to prompt users to enter their credentials while bypassing typical URL verification methods.(Citation: ZScaler BitB 2020)(Citation: Mr. D0x BitB 2022)

Adversaries can use phishing kits such as EvilProxy and Evilginx2 to perform adversary-in-the-middle phishing by proxying the connection between the victim and the legitimate website. On a successful login, the victim is redirected to the legitimate website, while the adversary captures their session cookie (i.e., Steal Web Session Cookie) in addition to their username and password. This may enable the adversary to then bypass MFA via Web Session Cookie.(Citation: Proofpoint Human Factor)

Adversaries may also send a malicious link in the form of Quick Response (QR) Codes (also known as “quishing”). These links may direct a victim to a credential phishing page.(Citation: QR-campaign-energy-firm) By using a QR code, the URL may not be exposed in the email and may thus go undetected by most automated email security scans.(Citation: qr-phish-agriculture) These QR codes may be scanned by or delivered directly to a user’s mobile device (i.e., Phishing), which may be less secure in several relevant ways.(Citation: qr-phish-agriculture) For example, mobile users may not be able to notice minor differences between genuine and credential harvesting websites due to mobile’s smaller form factor.

From the fake website, information is gathered in web forms and sent to the adversary. Adversaries may also use information from previous reconnaissance efforts (ex: Search Open Websites/Domains or Search Victim-Owned Websites) to craft persuasive and believable lures.

Location

Tactic
Reconnaissance

Technique Details

Identifier
ATTACK-T1598.003
Parent Technique
ATTACK-T1598
ATT&CK Page
View on MITRE

Tactics

Reconnaissance

Platforms

PRE

Detection

Detection of Spearphishing Link

Mitigations

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.

Software Configuration: Software configuration refers to making security-focused adjustments to the settings of applications, middleware, databases, or other software to mitigate potential threats. These changes help reduce the attack surface, enforce best practices, and protect sensitive data. This mitigation can be implemented through the following measures:

Conduct a Security Review of Application Settings:

  • Review the software documentation to identify recommended security configurations.
  • Compare default settings against organizational policies and compliance requirements.

Implement Access Controls and Permissions:

  • Restrict access to sensitive features or data within the software.
  • Enforce least privilege principles for all roles and accounts interacting with the software.

Enable Logging and Monitoring:

  • Configure detailed logging for key application events such as authentication failures, configuration changes, or unusual activity.
  • Integrate logs with a centralized monitoring solution, such as a SIEM.

Update and Patch Software Regularly:

  • Ensure the software is kept up-to-date with the latest security patches to address known vulnerabilities.
  • Use automated patch management tools to streamline the update process.

Disable Unnecessary Features or Services:

  • Turn off unused functionality or components that could introduce vulnerabilities, such as debugging interfaces or deprecated APIs.

Test Configuration Changes:

  • Perform configuration changes in a staging environment before applying them in production.
  • Conduct regular audits to ensure that settings remain aligned with security policies.

Tools for Implementation

Configuration Management Tools:

  • Ansible: Automates configuration changes across multiple applications and environments.
  • Chef: Ensures consistent application settings through code-based configuration management.
  • Puppet: Automates software configurations and audits changes for compliance.

Security Benchmarking Tools:

  • CIS-CAT: Provides benchmarks and audits for secure software configurations.
  • Aqua Security Trivy: Scans containerized applications for configuration issues.

Vulnerability Management Solutions:

  • Nessus: Identifies misconfigurations and suggests corrective actions.

Logging and Monitoring Tools:

  • Splunk: Aggregates and analyzes application logs to detect suspicious activity.
SP 800-53
SP800-53-AC-4relatedvia ctid-attack-to-sp800-53
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-IA-9relatedvia ctid-attack-to-sp800-53
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Reconnaissance45 controls
ATTACK-T1589Gather Victim Identity InformationATTACK-T1589.001CredentialsATTACK-T1589.002Email AddressesATTACK-T1589.003Employee NamesATTACK-T1590Gather Victim Network InformationATTACK-T1590.001Domain PropertiesATTACK-T1590.002DNSATTACK-T1590.003Network Trust DependenciesATTACK-T1590.004Network TopologyATTACK-T1590.005IP AddressesATTACK-T1590.006Network Security AppliancesATTACK-T1591Gather Victim Org InformationATTACK-T1591.001Determine Physical LocationsATTACK-T1591.002Business RelationshipsATTACK-T1591.003Identify Business TempoATTACK-T1591.004Identify RolesATTACK-T1592Gather Victim Host InformationATTACK-T1592.001HardwareATTACK-T1592.002SoftwareATTACK-T1592.003FirmwareATTACK-T1592.004Client ConfigurationsATTACK-T1593Search Open Websites/DomainsATTACK-T1593.001Social MediaATTACK-T1593.002Search EnginesATTACK-T1593.003Code RepositoriesATTACK-T1594Search Victim-Owned WebsitesATTACK-T1595Active ScanningATTACK-T1595.001Scanning IP BlocksATTACK-T1595.002Vulnerability ScanningATTACK-T1595.003Wordlist ScanningATTACK-T1596Search Open Technical DatabasesATTACK-T1596.001DNS/Passive DNSATTACK-T1596.002WHOISATTACK-T1596.003Digital CertificatesATTACK-T1596.004CDNsATTACK-T1596.005Scan DatabasesATTACK-T1597Search Closed SourcesATTACK-T1597.001Threat Intel VendorsATTACK-T1597.002Purchase Technical DataATTACK-T1598Phishing for InformationATTACK-T1598.001Spearphishing ServiceATTACK-T1598.002Spearphishing AttachmentATTACK-T1598.003Spearphishing LinkATTACK-T1598.004Spearphishing VoiceATTACK-T1681Search Threat Vendor Data