Fileinfector malware family

Fileinfector is a malware family tracked by MalwareAnalyzer by Cyble across 154 publicly analyzed samples. First seen 2026-07-29, most recently 2026-08-23. Observed ATT&CK techniques include T1547.001, T1112, T1543.003, T1105, T1562.001.

Corpus statistics

ATT&CK techniques used by Fileinfector

Extracted command-and-control infrastructure

Recent Fileinfector samples

Frequently asked about Fileinfector

What is Fileinfector?
Fileinfector is a malware family tracked by MalwareAnalyzer by Cyble across 154 publicly analyzed samples. First seen 2026-07-29, most recently 2026-08-23. Observed ATT&CK techniques include T1547.001, T1112, T1543.003, T1105, T1562.001.
How many Fileinfector samples have been analyzed?
MalwareAnalyzer by Cyble holds 154 publicly analyzed samples attributed to Fileinfector, first seen 2026-07-29 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 Fileinfector use?
Across our Fileinfector samples the most frequently observed techniques are T1547.001 (45), T1112 (26), T1543.003 (24), T1105 (22), T1562.001 (9), T1056.001 (4), T1486 (3), T1003 (2). Counts are the number of analyzed samples in which each technique was observed.
What file types does Fileinfector use?
Fileinfector samples in this corpus are distributed as pe (154).
Does Fileinfector use command-and-control infrastructure?
Yes. 3 distinct command-and-control indicators have been extracted from Fileinfector samples, either from static configuration or from traffic captured during sandbox detonation. The full list is published on the family page.
Is Fileinfector malicious?
154 of 154 analyzed Fileinfector 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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