WebShell malware family

WebShell is a malware family tracked by MalwareAnalyzer by Cyble across 12 publicly analyzed samples. First seen 2026-07-28, most recently 2026-08-25. Observed ATT&CK techniques include T1105, T1059.004.

Corpus statistics

ATT&CK techniques used by WebShell

Extracted command-and-control infrastructure

Recent WebShell samples

Frequently asked about WebShell

What is WebShell?
WebShell is a malware family tracked by MalwareAnalyzer by Cyble across 12 publicly analyzed samples. First seen 2026-07-28, most recently 2026-08-25. Observed ATT&CK techniques include T1105, T1059.004.
How many WebShell samples have been analyzed?
MalwareAnalyzer by Cyble holds 12 publicly analyzed samples attributed to WebShell, first seen 2026-07-28 and most recently 2026-08-25. 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 WebShell use?
Across our WebShell samples the most frequently observed techniques are T1105 (11), T1059.004 (10). Counts are the number of analyzed samples in which each technique was observed.
What file types does WebShell use?
WebShell samples in this corpus are distributed as shell (11), script (1).
Does WebShell use command-and-control infrastructure?
Yes. 7 distinct command-and-control indicators have been extracted from WebShell samples, either from static configuration or from traffic captured during sandbox detonation. The full list is published on the family page.
Is WebShell malicious?
12 of 12 analyzed WebShell 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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