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SEKOIA_Implant_Win_Apt29_2022_10

APT29 implants from October 2022

MalwareSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X (with warnings)
Author
Sekoia.io
Date
2023-02-15
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

APT29 implants from October 2022

Targets: Windows PE.

It has no patterns: the condition alone decides (modules, file properties or other rules). YARA modules used: pe, hash.

YARA-X says: warning[deprecated_field]: field `number_of_sections` is deprecated

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

Includes the imports needed to compile it on its own.

implant-win-apt29-2022-10.yarDetection Rule License 1.1
import "pe"
import "hash"

rule SEKOIA_Implant_Win_Apt29_2022_10
{
	meta:
		description = "APT29 implants from October 2022"
		author = "Sekoia.io"
		id = "0f270e75-f687-4fdc-a980-fde81107a4d6"
		date = "2023-02-15"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/implant_win_apt29_2022_10.yar#L4-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		hash = "1cffaf3be725d1514c87c328ca578d5df1a86ea3b488e9586f9db89d992da5c4"
		hash = "381a3c6c7e119f58dfde6f03a9890353a20badfa1bfa7c38ede62c6b0692103c"
		logic_hash = "b9300c2f06b54b16e1cab579d686d986caacf3b6eccec3a4e62d58e94b50bfb4"
		score = 75
		quality = 80
		tags = ""
		version = "1.0"
		classification = "TLP:CLEAR"

	condition:
		pe.imphash( ) == "39b818e7bac0a276f509f8c47e467666" or for any i in ( 0 .. pe.number_of_sections -1 ) : ( hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "6621113d9f212c71b8dd3ce85c62b251" )
}

Condition

pe.imphash( ) == "39b818e7bac0a276f509f8c47e467666" or for any i in ( 0 .. pe.number_of_sections -1 ) : ( hash.md5 ( pe.sections [ i ] . raw_data_offset , pe.sections [ i ] . raw_data_size ) == "6621113d9f212c71b8dd3ce85c62b251" )

In plain words (Heuristic)

  • A for-loop checks a property over several matches or items.
  • Uses the pe module.
  • Uses the hash module.
  • Compares a hash of the file or a part of it.
  • Checks the PE import hash (imphash).
  • Checks PE sections (names, count or properties).

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Open in editor

References

Sample hashes

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

  • 1cffaf3be725d1514c87c328ca578d5df1a86ea3b488e9586f9db89d992da5c4
  • 381a3c6c7e119f58dfde6f03a9890353a20badfa1bfa7c38ede62c6b0692103c

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

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

Rule id: 0f270e75-f687-4fdc-a980-fde81107a4d6

Metadata

version1.0
classificationTLP:CLEAR

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