Was CAS Software hit by ransomware?

CAS Software was listed by the Sarcoma ransomware operation (Germany), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Sarcoma ransomware group?

Sarcoma is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the CAS Software breach?

Sarcoma published data attributed to CAS Software. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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CAS Software

Claimed by Sarcoma · listed 2 years ago

20m

Age

since listed · data leaked

Status timeline

ListedOct 31, 2024
Data leakeddate unknown

At a glance

Group: Sarcoma
Status: Data leaked
Country: Germany
Sector: Technology
Listed on leak site: Oct 31, 2024

About the victim

AI dossier — public-source company profile

CAS Software AG is the German market leader in CRM solutions for small and medium-sized enterprises. Founded in 1986 and headquartered in Germany, the company employs approximately 470 people and serves over 32,000 companies and organizations with more than 520,000 users through its flagship products including CAS genesisWorld, SmartWe, and CAS Merlin CPQ.

Industry: Customer Relationship Management (CRM) Software
Employees: 470
Founded: 1986

Attack summary

Severity: high — Confirmed exfiltration of significant business data (SQL databases and email archives) from a major software vendor. Exposure of internal databases and communications from a company serving 32,000+ organizations creates cascading risk to the vendor's customers and their data security posture.

The Sarcoma group claims to have exfiltrated data from CAS Software AG, including SQL databases and Exchange email archives. The disclosure indicates data has been published as part of a ransomware attack.

high

Data the group says was taken

AI dossier — extracted from the leak post

SQL databases
Exchange email archives

What the group claims

CAS Software The leading German provider of CRM solutions for small and medium-sized enterprises Our history and our profile In recent years, CAS Software AG has become the German, market-leading innovator for customer relations management (CRM) for small and medium-sized enterprises (SMEs). CAS Software AG is managed by founder and CEO Martin Hubschneider since its founding in 1986. CAS Software AG employs approximately 470 people, 375 of which are employed directly at CAS Software AG. More than 520,000 people, in more than 32,000 companies and organizations, enjoy the benefits of using our software solutions: the best ergonomics, flexible and capable of integrating with existing software, a qualified partner network proven in practice and excellent value for money.Geo: Germany - Leak size: GB Archive - Contains: SQL, Exchange mails

Sources

Victim sitecas-software.com

Source

Indexed 2 years ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Sarcoma

Sarcoma is a relatively new ransomware group that emerged in October 2024, operating with apparent financial motivations and demonstrating a broad international targeting approach with at least 140 documented victims across multiple countries and industry sectors. The group's origin and affiliations remain unclear due to its recent emergence, with no publicly documented connections to established ransomware families or confirmation of whether they operate as an independent entity or through a Ransomware-as-a-Service model. Limited public information is available regarding Sarcoma's specific attack methodologies, initial access vectors, or technical capabilities, though their targeting patterns suggest opportunistic rather than highly selective victim selection across diverse industries including manufacturing, business services, agriculture and food production, and technology sectors. The group has shown a particular focus on victims in the United States while also maintaining operations against targets in Italy, Canada, Germany, and Australia, though no specific high-profile attacks or record ransom demands have been publicly documented by major security firms or law enforcement agencies. Given the group's recent emergence in late 2024, Sarcoma appears to remain active with no reported law enforcement disruptions or confirmed rebranding activities at this time. The group has been linked to 150 public disclosures across our corpus. First observed on a leak site on October 9, 2024; most recent post May 12, 2026. The operation is currently active.

Also tracked as: Sarcoma Ransomware Group.

Timeline of this disclosure

October 31, 2024CAS Software listed by Sarcomaon the group's public leak site

Other recent disclosures by Sarcoma

Sarcoma has been linked to 150 public victims on Darkfield. A sample of the most recent:

See the full Sarcoma dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, CAS Software is reported in Germany, a country with 926 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Sarcoma means CAS Software appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-Bund (Germany), as required for your jurisdiction.
Monitor for the data appearing on Sarcoma's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.