Full Report
New Astaroth Phishing Kit bypasses 2FA (two-factor authentication) to steal Gmail, Yahoo and Microsoft login credentials using a…
Analysis Summary
# Tool/Technique: Astaroth Phishing Kit
## Overview
The Astaroth Phishing Kit is a readily available tool designed to facilitate sophisticated phishing campaigns targeting high-value accounts, specifically Gmail and Microsoft accounts. Its primary objective is to bypass Two-Factor Authentication (2FA) mechanisms to achieve full account takeover.
## Technical Details
- Type: Tool (Phishing Kit)
- Platform: Web/Server infrastructure hosting the kit; targets end-user web browsers (Windows, macOS, Mobile)
- Capabilities: Mimics login pages for Gmail and Microsoft services; attempts to steal credentials and session cookies, specifically designed to bypass 2FA prompts.
- First Seen: Information not explicitly stated in the provided context, but implied as a "latest" threat.
## MITRE ATT&CK Mapping
As a phishing kit used for initial access and credential harvesting, the primary mappings involve the tactics of Initial Access and Credential Access:
- **TA0001 - Initial Access**
- T1566 - Phishing
- **TA0006 - Credential Access**
- T1555 - Credentials from Password Stores (Indirectly, by capturing active session tokens/cookies)
## Functionality
### Core Capabilities
- Hosting convincing phishing landing pages tailored for Microsoft and Google login environments.
- Intercepting user-provided credentials during the login process.
- Intercepting and leveraging session tokens/cookies generated after successful 2FA verification.
### Advanced Features
- **2FA Evasion:** The kit is specifically engineered to handle the entire authentication flow, including the 2FA step, to capture the necessary tokens/cookies that grant persistence beyond the initial credential theft.
## Indicators of Compromise
- **File Hashes:** Not provided in the context.
- **File Names:** Not provided in the context.
- **Registry Keys:** Not applicable for a web-based phishing kit.
- **Network Indicators:** The kit relies on malicious domains/URLs impersonating Google and Microsoft domains to host the landing pages. (No specific defanged indicators provided).
- **Behavioral Indicators:** Successful presentation of a multi-step login form (Username, Password, 2FA code/prompt) hosted on a malicious domain.
## Associated Threat Actors
The context does not specify which threat actor groups are actively using this kit, only that it is available and being utilized for attacks against Gmail and Microsoft users.
## Detection Methods
- **Signature-based detection:** Detecting known malicious URLs or domains associated with the kit hosting infrastructure.
- **Behavioral detection:** Monitoring for sessions where a legitimate service login (Gmail/Microsoft) occurs from an unusual IP, or where the session cookie/token is immediately utilized after authentication from a suspicious source.
- **YARA rules:** Not applicable for a web-based infrastructure tool without associated binary files.
## Mitigation Strategies
- **Prevention measures:** Educating users on identifying phishing URLs and scrutinizing domain names. Implementing robust email filtering to block access to known malicious links.
- **Hardening recommendations:** Enforcing hardware security keys (FIDO2/WebAuthn) for 2FA, as these are generally more resistant to phishing overlays than SMS or TOTP codes, which the context implies this kit is targeting successfully.
## Related Tools/Techniques
- Similar phishing frameworks like Moloch, EvilGinx2, or other credential/session harvesting kits.