Brontok malware family

Brontok is a malware family tracked by MalwareAnalyzer by Cyble across 16 publicly analyzed samples. First seen 2026-08-07, most recently 2026-08-23. Observed ATT&CK techniques include T1071.001, T1112, T1547.001, T1105, T1003.

Corpus statistics

ATT&CK techniques used by Brontok

Recent Brontok samples

Frequently asked about Brontok

What is Brontok?
Brontok is a malware family tracked by MalwareAnalyzer by Cyble across 16 publicly analyzed samples. First seen 2026-08-07, most recently 2026-08-23. Observed ATT&CK techniques include T1071.001, T1112, T1547.001, T1105, T1003.
How many Brontok samples have been analyzed?
MalwareAnalyzer by Cyble holds 16 publicly analyzed samples attributed to Brontok, first seen 2026-08-07 and most recently 2026-08-23. 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 Brontok use?
Across our Brontok samples the most frequently observed techniques are T1071.001 (5), T1112 (5), T1547.001 (5), T1105 (4), T1003 (3), T1555 (3), T1543.003 (2), T1003.001 (1). Counts are the number of analyzed samples in which each technique was observed.
What file types does Brontok use?
Brontok samples in this corpus are distributed as pe (16).
Is Brontok malicious?
16 of 16 analyzed Brontok 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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