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Subnet 129.121.143.0/24

SUBNET Ended high

Why this campaign was detected

3 IPs from the same /24 subnet (129.121.143.0/24) were observed attacking our sensors within the same time window. All belong to Oracle Corporation (AS31898). Concentrated activity from adjacent IPs is a strong indicator of a single operator or coordinated botnet.

Primary ASN

AS31898 · Oracle Corporation

Subnet

129.121.143.0/24

Country

🇺🇸 US

Cloud Provider

—

Member Count

3 IPs

Below average

Total Events

533

Below average by volume

Started / Ended

2026-09-26 23:42 — ongoing

Attack Types

ssh:bruteforce ssh:connection ssh:intrusion ssh:malware

MITRE ATT&CK Techniques

Reconnaissance

T1595 T1595.001 T1595.002

Initial Access

T1078

Execution

T1059.004

Credential Access

T1110 T1110.001

Discovery

T1016 T1046 T1082

Command and Control

T1105

Member Actors

IP Address	Behavior	Confidence	Events	Agents	Attack Types	Hostname	Last Seen
129.121.143.111	credential_harvester	50%	488	2	ssh:bruteforcessh:connectionssh:malware	zrh.tdz.mybluehost.me	2026-10-02 19:20	evidence →
129.121.143.84	opportunistic_bruter	36%	23	1	ssh:bruteforcessh:malware	boy.wto.mybluehost.me	2026-10-08 02:37	evidence →
129.121.143.149	opportunistic_bruter	26%	22	1	ssh:bruteforcessh:intrusion	ibc.wto.mybluehost.me	2026-10-07 04:51	evidence →

VPN Known VPN or proxy provider

DROP ASN on Spamhaus DROP list

Nx OSINT Corroborated by N external threat feeds