Breach Intelligence Report 16 Sep 2025

DaisyCloud Stealer Log: 6,443 Credentials — July Campaign Opens (Jul 2024)

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
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Records Exposed 6,443
Source Type Stealer log
Origin Telegram
Password Type plaintext

Six Weeks After the First Drop, DaisyCloud Was Back

When the first DaisyCloud upload appeared in mid-June 2024, it could have been a one-off -- a single operator dumping a batch of stealer logs and moving on. But on July 9, 2024, a new upload landed on the same Telegram channel: 6,443 fresh U.S. endpoint credentials, packaged in the same format, distributed through the same pipeline. The June operation was not a one-time event. It was the opening chapter of a multi-month campaign that would eventually explose more than 250,000 records.


DaisyCloud (July 9, 2024): Breach Summary

  • Records Exposed: 6,443
  • Data Types: Plaintext credentials (usernames, passwords, endpoint URLs)
  • Breach Type: Stealer log
  • Country Affected: United States
  • Date Leaked: July 9, 2024

The Two-Week Gap That Confirms a Deliberate Campaign

The DaisyCloud June cluster ran from June 18 through June 26, 2024 -- eight uploads across nine days. Then nothing for two weeks. On July 9, the uploads resumed. That two-week pause is significant: it rules out a single continuous exfiltration event and instead points toward a deliberate, organized distribution strategy. The operator or operators behind DaisyCloud were managing their Telegram channel cadence, likely timing releases for maximum audience engagment. The July 9 return also suggests the underlying malware infrastructure remained active during the gap -- silently harvesting credentials while the Telegram channel went quiet.


What Stealer Logs From This Campaign Contain

Each DaisyCloud upload follows a consistent structure inherited from the malware's logging format. Stealer logs capture credentials at the moment of theft -- from browser password managers, saved form data, and session tokens -- along with the URL or application host where each credential was used. This contextual data makes stealer logs more dangerous than raw password dumps. An attacker doesn't just know that a victim uses "password123" -- they know which bank, which email provider, which corporate VPN portal that password was used for. For the 6,443 individuals in this July 9 upload, every saved credential on their infected endpoint is now potentially in adversarial hands.


July 9 Was Only the Beginning

The July 9 upload opened a second cluster that would prove far larger than the June phase. Over the following three weeks, DaisyCloud would release at least 12 more batches, including a single 132,246-record upload on July 21 that dwarfed every previous release combined. The July campaign's total would exceed 200,000 records on its own -- stacked on top of the approximately 72,000 records from June. For security teams and individuals trying to assess exposure, the sheer volume and sustained duration of the DaisyCloud operation makes it one of the more significant stealer log campaigns documented in the HEROIC breach database.


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Breach Breakdown

Domain N/A
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 16 Sep 2025
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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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Critical: Change compromised passwords immediately and enable 2FA on all accounts

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