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177.174.89.99

TAGGED MALICIOUS how we decide →

Why: Our sensors observed proxy abuser sessions · certainty: inferred

177-174-89-99.user.vivozap.com.br (vivozap.com.br) ✗ FCrDNS

Threat Confidence

35%

Assessment

Opened tunnels through the host in 1 sessions (1 mail relay attempts).
Runs the same SSH client fingerprint (HASSH) as 51 other IPs.

Generated from the counts on this page by fixed rules; each line cites the number it rests on.

Location

🇧🇷 BR / Rio de Janeiro

ASN

AS26599 · TELEFONICA BRASIL S.A

Cloud Provider

—

Total Events

Below average by volume

Agent Count

First / Last Seen

2026-10-06 16:00 — 2026-10-06 16:00

Attack Types

smtp:relay

MITRE ATT&CK Techniques

Command and Control

T1090 T1572

External Corroboration

Blocklist.de

Reported 2026-10-19 05:01

blocklist_de:reported

Campaigns

HASSH acaa53e0a7d7… — SSH-2.0-OpenSSH_7.4 (52 IPs, 22 countries) HASSH Active high 🇨🇳 CN

52 IPs 4819 events

smtp:relayssh:bruteforcessh:connectionssh:malwaressh:proxy-abuse

2026-02-22 — 2026-09-22 · 52 IPs are running an identical SSH client (HASSH fingerprint acaa53e0a7d7…). Top network: Korea Telecom (AS4766). Geographic and …

Session Forensics

proxy_abuser ×1

Sessions

1 (1 with login)

Avg Depth Score

0.85

Commands Executed

Files Downloaded

Fingerprints

1 SSH client banner · 1 HASSH fingerprint

HASSH

acaa53e0a7d7ac7d1255103f37901306

SSH Client

SSH-2.0-OpenSSH_7.4

Evidence Timeline

Proxy Abuser 7cd1d1269303 w4m_singapore_01 · 2026-10-06 16:00

1 85%

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