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Subnet 13.81.183.0/24
SUBNET Ended highWhy this campaign was detected
3 IPs from the same /24 subnet (13.81.183.0/24) were observed attacking our sensors within the same time window. All belong to Microsoft Corporation (AS8075). Concentrated activity from adjacent IPs is a strong indicator of a single operator or coordinated botnet.
Primary ASN
AS8075 · Microsoft Corporation
Subnet
13.81.183.0/24
Country
🇳🇱 NL
Cloud Provider
Azure
Member Count
3 IPs
Below average
Total Events
1439
Below average by volume
Started / Ended
2026-02-27 20:39 — 2026-06-02 22:07
Attack Types
MITRE ATT&CK Techniques
Member Actors
| IP Address | Behavior | Confidence | Flags | Events | Agents | Attack Types | Hostname | Last Seen | |
|---|---|---|---|---|---|---|---|---|---|
| 13.81.183.28 | credential_harvester | 51% | 671 | 2 | ssh:bruteforce | — | 2026-04-26 21:58 | evidence → | |
| 13.81.183.30 | credential_harvester | 51% | 569 | 2 | ssh:bruteforce | — | 2026-04-04 07:42 | evidence → | |
| 13.81.183.29 | credential_harvester | 49% | 291 | 2 | ssh:bruteforce | — | 2026-04-02 15:34 | evidence → |
VPN Known VPN or proxy provider
DROP ASN on Spamhaus DROP list
Nx OSINT Corroborated by N external threat feeds