216.73.217.139

rhysida

· Published 20/12/2025 08:53 · Modified 21/12/2025 18:19 · Source: Ransomware.Live

Essential information

Confidence
100/100
Published
20/12/2025 08:53
Modified
21/12/2025 18:19
Updated at
21/12/2025 18:19
Revoked
No
Author / Source
Ransomware.Live
Resource level
—
Primary motivation
—
Related entities
2 reports, 32 attack patterns (mitre), 6 malware, 2 sectors, 2 countries, 155 indicators, 3 organization

Description

Rhysida is a ransomware-as-a-service (RAAS) group that emerged in May 2023. The group utilizes a namesake ransomware through phishing attacks and Cobalt Strike to breach the targets' networks and deploy their payloads.<br> <br> The group threatens to publicly distribute exfiltrated data if the ransom is not paid, and it's worth mentioning that Rhysida is still in the early stages of development.<br> <br> The ransomware leaves PDF notes in the affected folders, instructing victims to contact the group through its portal, and payment is made via Bitcoin.<br> <br> After encryption, the ransomware appends the extension '.ryshida' to encrypted files.<BR>Source: https://github.com/crocodyli/ThreatActors-TTPs

Marking (TLP)

TLP:CLEAR

Labels

ransomware

Related entities

Attack patterns, malware, vulnerabilities, indicators and other entities linked to this intrusion set.