Transportes Montejo S.A.S. Data Breach

Transportes Montejo S.A.S., a Colombian logistics and freight transport operator, was listed on the dark web portal of the Nightspire ransomware group on September 1, 2026. Concurrently, the krybit ransomware group also posted a separate listing for the same organization on the same date. SOCRadar’s Dark Web Monitoring flagged both incidents. This dual listing raises the possibility of either two distinct threat actors gaining independent access to the company’s systems or a single initial access event being leveraged by multiple ransomware groups. The transportation sector, particularly companies operating in Latin America, can be attractive targets due to the critical nature of their operations and the potential for significant disruption. Nightspire has claimed responsibility for 25 other victims in the past 60 days, with a targeting pattern that includes Manufacturing, Technology, and Transportation industries. Their geographic concentration of victims is primarily in the United States, India, and Turkey. The group has previously targeted other entities in the transportation sector and Latin America, including Truckworx and Tianji Auto Care Service Company. The fact that Transportes Montejo S.A.S. is listed by two different ransomware groups on the same day suggests a significant compromise or vulnerability that multiple actors may have exploited.

A stealer-log query for the domain transportesmontejo[.]com revealed significant findings, with 25 records spanning from March 2024 through July 2026. Of these, 11 records were classified as employee credentials. The query also identified key endpoints associated with the organization, including: Nominaweb (payroll and HR systems), internal IP-addressed services, DNS infrastructure, and third-party payroll SaaS. The breadth of this exposure, covering critical systems like payroll and internal networking, along with DNS infrastructure, indicates a potentially widespread compromise. The profile of the credential exposure is described as mixed, with multiple distinct corporate usernames identified across payroll, DNS, and internal networking systems. Notably, these credentials have been active for over two years with no evidence of rotation. This persistent, unrotated access from 2024 through 2026 is consistent with the type of long-dwell access that ransomware groups typically seek to exploit for their operations. The dual listing by Nightspire and krybit on the same day, combined with the extensive credential exposure, strongly suggests that Transportes Montejo S.A.S. may have been accessible to multiple threat actors simultaneously. The assessment concludes that the dual listing is a significant signal, consistent with the organization’s infrastructure being accessible to multiple actors concurrently. The wide range of exposed credentials further supports this interpretation. Organizations should treat this dual listing as a corroborating indicator and conduct thorough investigations for overlapping threat-actor access, in addition to monitoring the dark web listings from both Nightspire and krybit. Continued dark web monitoring, proactive credential hygiene checks, password rotation, and multi-factor authentication reviews are recommended.

This report is intended for threat intelligence and security awareness purposes. SOCRadar does not host, redistribute or buy stolen data. All breach information reported here is collected from publicly accessible threat actor and ransomware portals. This content is intended to equip CTI teams with context around recent attacks. While we strive for accuracy, listings on ransomware leak and extortion sites cannot always be independently verified and may not reflect confirmed breaches. If you believe any data in this report is incorrect, please contact us.