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Cyber Threat
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Ransomware victim Technology

ATMCo

Listed by Trigona on · organisation based in United States

atmco.net/

Disclosed
Mar 15, 2024
Leak-site listing date
Threat group
Trigona
19 victims listed
Country
United States
#1 most targeted
Sector
Technology

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Trigona. Figures and technique mappings are quoted from the source data, not inferred.

About the Trigona group

According to PCrisk, Trigona is ransomware that encrypts files and appends the ._locked extension to filenames. Also, it drops the how_to_decrypt.hta file that opens a ransom note. An example of how Trigona renames files: it renames 1.jpg to 1.jpg._locked, 2.png to 2.png._locked, and so forth.It embeds the encrypted decryption key, the campaign ID, and the victim ID in the encrypted files. Trigona has listed 49 victims since April 2023.

How Trigona is documented to operate

Exploit Public-Facing Application T1190 Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network. The weakness in the system can be a software bug, a temporary glitch, or a misconfiguration. Exploited applications are often websites/web servers, but can also include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other system with Internet-accessible open sockets. On ESXi infrastructure, adversaries may exploit exposed OpenSLP services; they may alternatively exploit exposed VMware vCenter servers.

Mitigations: Vulnerability Scanning, Limit Access to Resource Over Network, Filter Network Traffic, Network Segmentation, Privileged Account Management, Application Isolation and Sandboxing

MITRE ATT&CK reference
Deobfuscate/Decode Files or Information T1140 Stealth

Adversaries may use Obfuscated Files or Information to hide artifacts of an intrusion from analysis. They may require separate mechanisms to decode or deobfuscate that information depending on how they intend to use it. Methods for doing that include built-in functionality of malware or by using utilities present on the system. One such example is the use of certutil to decode a remote access tool portable executable file that has been hidden inside a certificate file. Another example is using the Windows <codecopy /b</code or <codetype</code command to reassemble binary fragments into a malicious payload.

MITRE ATT&CK reference

MITRE ATT&CK techniques attributed to Trigona across its recorded activity, not a finding about how ATMCo was reached.

Incident analysis

ATMCo was listed by Trigona ransomware, a group with 19 victims recorded in this database. The listing appeared on the group's leak site on March 15, 2024.

ATMCo is based in United States and operates in the Technology sector. United States ranks #1 worldwide for ransomware disclosures, with 10,162 victims in this database.

Sector context. Technology companies hold intellectual property, customer data, and source code — all highly valuable assets. A successful ransomware attack can also put downstream customers at risk through supply chain exposure.

Trigona typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was ATMCo attacked by ransomware?

Yes. ATMCo was listed as a victim of the Trigona ransomware group on March 15, 2024. The organisation is based in United States and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked ATMCo?

ATMCo was attacked by Trigona ransomware. Trigona is one of the most active ransomware groups, having claimed 19 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the ATMCo ransomware attack occur?

The ransomware attack on ATMCo was disclosed on March 15, 2024. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the ATMCo ransomware attack?

The specific data stolen from ATMCo has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Technology organisation, ATMCo likely held source code, intellectual property, and customer data.

How can organisations protect against Trigona attacks?

To defend against Trigona and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.