Spearphishing Voice

T1566.004

Sub-technique of T1566 Phishing.View on attack.mitre.org

About this technique

Adversaries may use voice communications to ultimately gain access to victim systems. Spearphishing voice is a specific variant of spearphishing. It is different from other forms of spearphishing in that it employs the use of manipulating a user into providing access to systems through a phone call or other forms of voice communications. Spearphishing frequently involves social engineering techniques, such as posing as a trusted source (ex: Impersonation) and/or creating a sense of urgency or alarm for the recipient.

All forms of phishing are electronically delivered social engineering. In this scenario, adversaries are not directly sending malware to a victim vice relying on User Execution for delivery and execution. For example, victims may receive phishing messages that instruct them to call a phone number where they are directed to visit a malicious URL, download malware, or install adversary-accessible remote management tools (Remote Access Tools) onto their computer.

Adversaries may also combine voice phishing with Multi-Factor Authentication Request Generation in order to trick users into divulging MFA credentials or accepting authentication prompts.

Detection rules0

Rules on DetectionCode tagged with T1566.004.

Sigma0

No Sigma rules are mapped to this technique yet.

Splunk0

No Splunk rules are mapped to this technique yet.

Groups1

Software0

None recorded.

Campaigns1

Procedure examples2

Groups1

Used byProcedure example
GroupStorm-1811

Storm-1811 has initiated voice calls with victims posing as IT support to prompt users to download and execute scripts and other tools for initial access.

Campaigns1

Used byProcedure example
CampaignC0027

During C0027, Scattered Spider impersonated legitimate IT personnel in phone calls to direct victims to download a remote monitoring and management (RMM) tool that would allow the adversary to remotely control their system.

References4

  1. CISA Remote Monitoring and Management Software Open source
    CISA. (n.d.). Protecting Against Malicious Use of Remote Monitoring and Management Software. Retrieved February 2, 2023.
  2. Proofpoint Vishing Open source
    Proofpoint. (n.d.). What Is Vishing?. Retrieved September 8, 2023.
  3. Unit42 Luna Moth Open source
    Kristopher Russo. (n.d.). Luna Moth Callback Phishing Campaign. Retrieved February 2, 2023.
  4. sygnia Luna Month Open source
    Oren Biderman, Tomer Lahiyani, Noam Lifshitz, Ori Porag. (n.d.). LUNA MOTH: THE THREAT ACTORS BEHIND RECENT FALSE SUBSCRIPTION SCAMS. Retrieved February 2, 2023.

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