doppelpaymer

Executive Summary

Doppelpaymer is a ransomware group active from 2019 to 2021, targeting victims with financial extortion through data encryption. Known for adding the '.doppeled' file extension and a decryption note, they employ tactics typical of ransomware operations but specific operational details are limited.

Goals & Targeting

Doppelpaymer's objectives align with typical ransomware groups—financial extortion through encryption. They appear to target a broad range of industries without sector-specific focus, indicating a general opportunistic approach toward victims.

Doppelpaymer ransomware encrypts user files, appending the .doppeled extension, and demands ransoms for decryption keys. A telltale sign is the '.how2decrypt.txt' file left behind. While they primarily seek financial gain, specific details on their attack vectors and targets remain sparse. Their longevity suggests moderate operational success but lack detailed campaign information.

Key Capabilities

• File encryption with .doppeled extension
• Creating '.how2decrypt.txt' ransom note
• Potential lateral movement within networks
• Possibly employing persistence mechanisms

MITRE ATT&CK Tactics

Software / Tooling

Campaigns & Victims

While specific campaigns aren't detailed, they show steady activity over two years. General targeting suggests a focus on any accessible victims without sector preference.

IOC Patterns

• File extension '.doppeled'
• Presence of '.how2decrypt.txt'
• Network traffic post-encryption
• Phishing emails with malicious attachments

Recommended Actions

• Implement robust backup solutions for data recovery
• Deploy endpoint detection and response tools
• Monitor network activity for exfiltration attempts
• Educate users to recognize phishing attempts

Suggested Tags