HEROIC Analysts Found Monster Cloud Free 9 Dump on the Dark Web

Monster Cloud Free 9: A Third October 18 Batch Confirms the Channel's Full-Day Presence

The presense of Monster Cloud Free 9 on October 18, 2023 changes the picture of what the operator was doing that day. Free 5 (8,319 records) and Free 6 (11,720 records) were already confirmed as October 18 releases. Free 9 (10,694 records) represents a third distinct Monster Cloud batch on the same pre-cluster day. Three Free episode releases on a single day suggests Monster Cloud was operating at a sustained distibution pace on October 18 -- well before the operator continued through the October 19-22 window. The three confirmed October 18 batches alone account for more than 30,000 US plaintext credentials from a single operator in a single day.

Monster Cloud Free 9 (October 2023): Stealer Log Summary

• Records Exposed: 10,694
• 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 18, 2023

What Happened to Free 7 and Free 8?

If Free 5, Free 6, and Free 9 were all released on October 18, the question of where Free 7 and Free 8 fit in the sequence is unresolved by the metadata alone. They may also be October 18 releases catalogued separately, or they may appear on October 19 as the main cluster period began. Monster Cloud's episode numbering is per-event -- the numbers label individual drops within the campaign rather than representing a global sequential count. What is clear is that Monster Cloud's October 2023 campaign extended across at least five days and involved at least nine identifiable Free-numbered releases, with the earliest confirmed activity on October 18.

10,694 Records: The Midpoint of Monster Cloud's October 18 Batches

Among the three confirmed Monster Cloud Free batches on October 18, Free 6 at 11,720 records is the largest and Free 5 at 8,319 is the smallest. Free 9 at 10,694 sits between the two, consistent with a channel sustaining a roughly 10,000-record-per-batch output on its most actve distribution day. Each batch contains plaintext credentials ready for immediate credential stuffing -- no cracking required. The URLs included in each record identify the services or platforms the victim was authenticated against at the time of harvest, giving attackers direct targeting intelligence alongside the login data itself.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion exposed records, including stealer log data from Monster Cloud's October 2023 campaign. If your credentials appeared in Free 9 or any other Monster Cloud Free batch, a free scan at HEROIC's breach scanner can confirm whether your data is in the index.