Mailto

aliases

Last seen:Mar 17, 2026

Intelligence Profile

Malware family tracked by Malpedia. ID: win.mailto

Threat Analysis

Mailto is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

External References

→https://0x00-0x7f.github.io/Netwalker-from-Powershell-reflective-loader-to-injected-Dll/

→https://blog.talosintelligence.com/2020/09/CTIR-quarterly-trends-Q4-2020.html

→https://blog.trendmicro.com/trendlabs-security-intelligence/netwalker-fileless-ransomware-injected-via-reflective-loading/

→https://blogs.blackberry.com/en/2021/03/zerologon-to-ransomware

→https://cert-agid.gov.it/news/netwalker-il-ransomware-che-ha-beffato-lintera-community/

Quick Facts

TypeAPT / Threat Group

Aliases4

Also Known As

NetWalkerwin.mailtoKoko RansomwareMailto

External Intelligence

Malpedia: win.mailto

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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