Full Report
Abnormal AI found that engagement rates with VEC attacks globally is “worrisomely high”, overtaking BEC in the EMEA region
Analysis Summary
Although the provided context focuses on the growing effectiveness of Vendor Email Compromise (VEC) attacks as reported by Abnormal AI during Infosecurity Europe 2025, rather than detailing a specific malware family or tool with hashes and extensive technical capabilities, the summary below structures the discussion around the **VEC attack type** as the primary 'technique' being analyzed, based on the available information.
# Tool/Technique: Vendor Email Compromise (VEC) Attacks
## Overview
Vendor Email Compromise (VEC) is a type of Business Email Compromise (BEC) where attackers impersonate an external third party, such as a supplier or business partner, to trick employees into making fraudulent payments or initiating unauthorized wire transfers. Recent research indicates VEC attacks are becoming alarmingly effective, especially in the EMEA region, exhibiting higher engagement rates than traditional BEC.
## Technical Details
- Type: Technique (Social Engineering/Email Attack)
- Platform: Email Systems, targeting organizational employees and finance departments.
- Capabilities: Impersonation of trusted external entities to solicit fraudulent financial actions.
- First Seen: VEC is an evolution of BEC, with specific reporting emerging around the time of this article (June 2025 context).
## MITRE ATT&CK Mapping
The core activity of VEC maps primarily to credential/financial theft via social engineering:
- **TA0001 - Initial Access**
- T1566 - Phishing
- T1566.001 - Spearphishing Attachment (If malicious attachments are used, though the text implies manipulation based on identity)
- T1566.002 - Spearphishing Link
- **TA0005 - Defense Evasion**
- T1583.001 - Domains (If custom infrastructure is used for communication)
- **TA0006 - Credential Access**
- T1078 - Valid Accounts (If an employee falls for the lure and provides access)
- **TA0010 - Exfiltration**
- T1041 - Exfiltration Over C2 Channel (If payment instructions lead to exfiltration of funds)
*Note: The primary method detailed (impersonation leading to fraudulent payment) falls strongly under the Social Engineering vector.*
## Functionality
### Core Capabilities
- **Impersonation:** Falsely adopting the identity of a known vendor or partner.
- **Financial Fraud:** Directing recipients to process fake invoices or initiate fraudulent wire transfers.
- **High Engagement:** Achieving significantly high recipient follow-up actions (replying, forwarding) compared to standard BEC.
### Advanced Features
- **Increased Velocity:** Evidence suggests repeat engagement related to VEC is more than twice that of BEC.
- **Low Reporting Rate:** EMEA organizations exhibited a particularly low reporting rate for VEC (0.2%) compared to BEC (4.2%), indicating a blind spot for defenders.
## Indicators of Compromise
(The provided text describes attack *metrics* and *comparisons* but does not list specific IOCs for a particular sample.)
- File Hashes: [Not Available in Context]
- File Names: [Not Available in Context]
- Registry Keys: [Not Available in Context]
- Network Indicators: [Not Available in Context]
- Behavioral Indicators: High rate of reply/forward activity following perceived communication from an external vendor; failure to report suspicious external emails.
## Associated Threat Actors
- [Generic threat actors engaging in Business Email Compromise (BEC) activities, specifically those focused on supply chain or vendor relationships.]
## Detection Methods
- **Signature-based detection:** Ineffective against novel VEC lures unless DMARC/SPF/DKIM checks are heavily enforced and monitored for external domains spoofing.
- **Behavioral detection:** Crucial for detecting anomalous reply patterns or urgent instructions related to financial actions originating from seemingly legitimate external communications.
- **YARA rules:** [Not Available in Context]
## Mitigation Strategies
- **Verification Protocols:** Implement mandatory, multi-factor verification procedures for all financial changes or payment requests received via email, especially those claiming to be from vendors or partners.
- **User Training:** Specialized training focusing on recognizing VEC tactics, emphasizing that impersonation of external entities is common.
- **Reporting Culture:** Increase employee awareness and reporting mechanisms, aiming to close the gap observed in the low VEC reporting rates (0.2% in EMEA).
## Related Tools/Techniques
- Business Email Compromise (BEC)
- Email Account Compromise (EAC)
- Third-Party Impersonation Attacks