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YARA · Cluster25 (via Open-Source-YARA-rules)

CLUSTER25_APT29_Htmlsmuggling_ZIP_82733_00001

Rule to detect the EnvyScout HTML smuggling with ZIP payload used in the APT29/Nobelium APT29 chain

APT / threat actorCluster25 (via Open-Source-YARA-rules)No licence (all rights reserved)Compiles with YARA-X (with warnings)
Author
Cluster25
Date
2022-05-12
Modified
2023-04-10
Score / Quality
75 / 75

What this rule detects

Rule to detect the EnvyScout HTML smuggling with ZIP payload used in the APT29/Nobelium APT29 chain

It defines 6 patterns (5 text, 1 hex, 0 regex).

YARA-X says: warning[text_as_hex]: hex pattern could be written as text literal

Summary generated from the rule's metadata and condition.

Rule source

Rule text not reproduced

This rule comes from Cluster25 (via Open-Source-YARA-rules), which does not grant a licence to redistribute its rules (No licence (all rights reserved)). We show its metadata only. Read the original rule upstream:

View the rule on GitHubOpen the repository

References

Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

  • d5c84cbd7dc70e71f3eb24434a58b2f149d0c39faa7e4157552b60c7dbb53d11

Licence & attribution

Author: Cluster25

Source repository: Cluster25 (via Open-Source-YARA-rules) @ ec0056f767

Licence: No licence (all rights reserved) (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: edc2fc67-482f-594e-9b10-f738b9e34c4a

Tags:FILE

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