Agentb malware family

Agentb is a malware family tracked by MalwareAnalyzer by Cyble across 9 publicly analyzed samples. First seen 2026-08-01, most recently 2026-08-18. Observed ATT&CK techniques include T1105, T1112, T1057, T1059.001, T1071.001.

Corpus statistics

ATT&CK techniques used by Agentb

Extracted command-and-control infrastructure

Recent Agentb samples

Frequently asked about Agentb

What is Agentb?
Agentb is a malware family tracked by MalwareAnalyzer by Cyble across 9 publicly analyzed samples. First seen 2026-08-01, most recently 2026-08-18. Observed ATT&CK techniques include T1105, T1112, T1057, T1059.001, T1071.001.
How many Agentb samples have been analyzed?
MalwareAnalyzer by Cyble holds 9 publicly analyzed samples attributed to Agentb, first seen 2026-08-01 and most recently 2026-08-18. This counts public submissions to this platform only, so it is a measure of what we have seen rather than of the family's total prevalence.
What MITRE ATT&CK techniques does Agentb use?
Across our Agentb samples the most frequently observed techniques are T1105 (5), T1112 (5), T1057 (1), T1059.001 (1), T1071.001 (1), T1547.001 (1). Counts are the number of analyzed samples in which each technique was observed.
What file types does Agentb use?
Agentb samples in this corpus are distributed as pe (8), unknown (1).
Does Agentb use command-and-control infrastructure?
Yes. 18 distinct command-and-control indicators have been extracted from Agentb samples, either from static configuration or from traffic captured during sandbox detonation. The full list is published on the family page.
Is Agentb malicious?
7 of 9 analyzed Agentb samples were scored malicious by the fused verdict, which combines multi-engine static scanning, YARA and hash reputation with behavior captured during real sandbox detonation. Each report lists every signal that contributed to its score.

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