404 PCS CLOUD_COSMIC: 13,827 Credentials Leaked

We noticed an interesting data dump on a Telegram channel in mid-December 2022, initially flagged as a routine upload. However, a closer examination revealed it to be a stealer log, detailing compromised endpoint information. What struck us was the inclusion of plaintext passwords alongside email addresses and API host URLs, a combination that significantly lowers the barrier for further exploitation. The sheer volume, while not astronomical, is concerning given the direct access credentials exposed.

The incident, identified on December 12, 2022, involved a file uploaded by a Telegram user, identified as "CLOUD_COSMIC." This file, a stealer log, contained 13,827 records. The exposed data types are primarily email addresses and plaintext passwords, alongside associated URLs, likely representing API endpoints or compromised sites. The source structure indicates a typical infostealer log format, where each entry represents a successful credential exfiltration from an infected endpoint. The leak location was a public Telegram channel, making the data readily accessible to a wide audience of malicious actors.

While this specific incident hasn't garnered widespread media attention, the methodology aligns with prevalent threat actor tactics documented by cybersecurity firms. The use of infostealers to harvest credentials from compromised endpoints is a well-established vector for initial access and further lateral movement within networks. Research from Mandiant and CrowdStrike has consistently highlighted the persistent threat posed by these malware families, emphasizing the critical need for robust endpoint detection and response (EDR) solutions and vigilant monitoring of credential exposure on the dark web and public forums.

We observed a notable data leak originating from the "404 PCS" entity, discovered on December 12, 2022. The initial report indicated a cloud upload, but further analysis confirmed the presence of a stealer log. What immediately raised concern was the direct exposure of sensitive authentication details, rather than just hashed credentials or PII. This type of data presents a more immediate and actionable threat to targeted organizations.

The breach, attributed to a stealer log uploaded by a Telegram user under the moniker "CLOUD_COSMIC," contained 13,827 entries. Each entry comprised an email address, a plaintext password, and a corresponding URL, likely indicative of an API host or a compromised web service. The structure of the data suggests a direct exfiltration from user devices or compromised systems, bypassing typical hashing mechanisms. The data was made available on a public Telegram channel, increasing its accessibility for exploitation.

This incident is consistent with the broader trend of credential stuffing and account takeover attempts facilitated by readily available stolen credentials. While specific news coverage for this particular "404 PCS" leak is minimal, the underlying threat of infostealer malware is a continuous concern. Cybersecurity intelligence reports from various vendors, including Sophos and Palo Alto Networks, frequently detail the ongoing proliferation of infostealers and their role in facilitating financially motivated cybercrime.

Our attention was drawn to a data set appearing on December 12, 2022, identified as a "CLOUD_COSMIC" upload via Telegram. This collection, initially appearing as a simple data dump, was in fact a stealer log. What was particularly striking was the inclusion of plaintext passwords, a critical vulnerability that bypasses common security measures like password salting and hashing.

The breach, dated December 12, 2022, involved a stealer log containing 13,827 records. The compromised data includes email addresses, plaintext passwords, and associated URLs. The structure of the log file points to an infostealer's output, capturing credentials directly from infected endpoints. The data was disseminated via a Telegram user, making it easily accessible to threat actors seeking to exploit these credentials.

While this specific leak may not have made headlines, the modus operandi is a persistent threat. The widespread use of infostealers to harvest credentials from consumer and potentially corporate devices is a well-documented phenomenon. Industry research, such as reports from threat intelligence platforms like Recorded Future, consistently highlights the impact of such credential dumps on the broader cybersecurity landscape, enabling widespread account compromise and further network intrusions.