Was Grupo Herradura Occidente hit by ransomware?

Grupo Herradura Occidente was listed by the IMNCrew ransomware operation (Mexico), 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 IMNCrew ransomware group?

IMNCrew 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 Grupo Herradura Occidente breach?

IMNCrew published data attributed to Grupo Herradura Occidente. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Grupo Herradura Occidente

Claimed by IMNCrew · listed 1 year ago

14m

Age

since listed · data leaked

Status timeline

ListedMay 5, 2025
Data leakeddate unknown

At a glance

Group: IMNCrew
Status: Data leaked
Country: Mexico
Sector: Manufacturing
Listed on leak site: May 5, 2025

About the victim

AI dossier — public-source company profile

Grupo Herradura Occidente is a Mexican transportation company formed in 2007 from the merger of Autotransportes Herradura de Plata (1945) and Grupo Occidente (1956). Operating a modern fleet of over 780 buses (Volvo, Mercedes Benz, MAN), it transports more than 20 million passengers annually across Plus, economic, and suburban service modalities from Mexico City.

Industry: Passenger Bus Transportation & Truck Haulage
Address: Mexico City, Mexico
Employees: 501-5000
Founded: 2007

Attack summary

Severity: low — Post contains only listing and company background information with no mention of proof files, data exfiltration, encryption, operational disruption, or specific data types compromised. Announcement-only with no technical evidence of breach impact.

IMNCrew claims to have conducted an attack on Grupo Herradura Occidente. No specific details are provided in the post regarding encryption, exfiltration, or data categories at stake.

low

What the group claims

Grupo Herradura Occidente is a Mexican transportation company formed in 2007 through the merger of two long-established companies: Autotransportes Herradura de Plata (founded in 1945) and Grupo Occidente (founded in 1956). This fusion aimed to create a more profitable, productive, and efficient organization capable of facing financial and global changes at that time. The company operates a modern fleet of over 780 buses, including brands like Volvo, Mercedes Benz, and MAN, and transports more than 20 million passengers annually. It offers three service modalities: Plus, economic, and suburban.The company is based in Mexico City and is active in the truck transportation industry .Grupo Herradura Occidente is known for its significant presence in the Mexican transportation sector, particularly in passenger bus services, and it has a substantial vehicle fleet and passenger volume. However, some employee reviews mention challenges related to workplace environment and management practices .In summary, Grupo Herradura Occidente is a key player in Mexico’s passenger and truck transportation industry, with a history rooted in two legacy companies and a large, modern fleet serving millions of passengers yearly.

Sources

Leak posthttp://imncrewwfkbjkhr2oylerfm5qtbzfphhmpcfag43xc2kfgvluqtlgoid.onion

Source

Indexed 1 year 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 IMNCrew

IMNCrew is a recently emerged ransomware group first observed in May 2025, operating with apparent financial motivations based on their targeting patterns and victim selection. The group's origin and affiliations remain unclear due to limited public documentation, though their geographic targeting suggests potential international operations with no confirmed ties to established ransomware families or known state-sponsored actors. Based on available intelligence, IMNCrew appears to employ traditional ransomware deployment methods targeting organizations across multiple sectors, though specific technical details regarding their initial access vectors, encryption implementations, or data exfiltration capabilities have not been publicly documented by major security researchers or government agencies. The group has compromised approximately 12 known victims primarily across the United States, Sweden, Canada, Mexico, and Indonesia, with notable focus on consumer services, healthcare, financial services, and technology sectors. IMNCrew appears to remain active as of their recent emergence, though comprehensive threat intelligence regarding their operations, infrastructure, and specific attack methodologies requires further documentation from established security research organizations. The group has been linked to 12 public disclosures across our corpus. First observed on a leak site on May 5, 2025; most recent post September 16, 2025. The operation is currently inactive.

Also tracked as: imn crew.

Timeline of this disclosure

May 5, 2025Grupo Herradura Occidente listed by IMNCrewon the group's public leak site

Other recent disclosures by IMNCrew

IMNCrew has been linked to 12 public victims on Darkfield. A sample of the most recent:

See the full IMNCrew dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,681 disclosures indexed across all operators we track. Geographically, Grupo Herradura Occidente is reported in Mexico, a country with 196 ransomware disclosures in our corpus.

If your organisation is affected

A listing by IMNCrew means Grupo Herradura Occidente 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-MX (Mexico), as required for your jurisdiction.
Monitor for the data appearing on IMNCrew'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.