Breach Intelligence Report 23 Sep 2025

Monster Cloud Free 10 Stealer Log: 11,748 US Credentials Exposed October 2023

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
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Records Exposed 11,748
Source Type Stealer log
Origin Telegram
Password Type plaintext

Monster Cloud Free 10: 11,748 US Credentials in the Monster Cloud Freemium Series

Monster Cloud Free 10, the 10th numbered free release from the Monster Cloud Telegram stealer log channel, exposed 11,748 US plaintext credentials on October 9, 2023. The Monster Cloud channel is a recurring presence in the October 2023 US stealer log cluster, with multiple numbered free releases distributed across the Oct 9-11 window. The freemium "Free #" naming convention -- Free 10, Free 2, etc. -- creates a catalog structure that helps returning buyers identify new releases from a channel they've previously evaluated. Monster Cloud Free 10's Oct 9 release establishes the channel's presence at the start of the multi-day release window, preceding later Monster Cloud releases in the same cluster.


Monster Cloud Free 10 (October 2023): Stealer Log Summary

  • Records Exposed: 11,748
  • Data Types: Email addresses, plaintext passwords, URLs
  • Breach Type: Stealer log -- credentials harvested from malware-infected endpoints, not a direct database breach
  • Password Type: Plaintext -- captured directly from browser sessions and credential stores by infostealer malware
  • Country: United States
  • Date Leaked: October 9, 2023

The Monster Cloud Freemium Series: Numbered Catalog Releases

Monster Cloud appears as one of the more consistently active channels in the October 2023 cluster, with at least two numbered free releases visible across Oct 9-11. The numbered catalog approach differs from the "cloud free + batch number" convention used by LogsDiller, but achieves the same goal: a browsable, trackable release history that converts one-time downloaders into regular subscribers. At 11,748 records, Monster Cloud Free 10 is generously sized for a promotional batch, demonstrating substantiall inventory depth and supporting the channel's credibility in the competitive freemium marketplace. The non-sequential appearance of batch numbers (Free 10 before Free 2 in chronological release order) suggests the numbering may reflect internal inventory categories rather than simple sequential release counting.


The "Monster" Brand Aesthetic

Monster-themed naming in the infostealer marketplace projects scale, aggression, and volume. A stealer log channel called "Monster Cloud" signals that its logs are large, comprehensive, and sourced from aggressive malware deployment rather than opportunistic small-batch collection. The combination with "Cloud" adds the infrastructure aesthetic that reinforces the impression of organized, scalable operations. Whether these brand signals reflect actual operational scale or are aspirational marketing, Monster Cloud's multi-batch October release pattern suggests the channel does have ongoing inventory rather than relying on single one-time dumps.


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Breach Breakdown

Domain N/A
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 23 Sep 2025
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Est. Financial Impact $85.0K fraud, phishing & misuse risk
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Identity Theft Risk Score

Risk Score: 8.7/10 - Critical

Data Exposure Analysis

Passwords Critical
Financial High
Personal Medium
Social High
Security Critical

Breach Timeline Analysis

March 2024 Multiple credentials exposed in recent data breach
January 2024 Password found in dark web marketplace
December 2023 Personal information leaked in major security incident

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