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SEKOIA_Apt_Spynote_Android_Dex_Strings

Detects Android SpyNote DEX file

APT / threat actorSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2022-08-22
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detects Android SpyNote DEX file

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

apt-spynote-android-dex-strings.yarDetection Rule License 1.1
rule SEKOIA_Apt_Spynote_Android_Dex_Strings : FILE
{
	meta:
		description = "Detects Android SpyNote DEX file"
		author = "Sekoia.io"
		id = "87fb8b7a-bfac-4003-b618-50b4a7863928"
		date = "2022-08-22"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_spynote_android_dex_strings.yar#L1-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "474617628afe110d9e7ea2acef57c5e560139b57aa7e497bf9e111af239e9588"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "is not file found"
		$ = "Can not access"
		$ = "PANG !!"
		$ = "On Start!!"

	condition:
		uint32be( 0 ) == 0x6465780A and filesize < 1MB and all of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$text"is not file found"
$text"Can not access"
$text"PANG !!"
$text"On Start!!"

Condition

uint32be( 0 ) == 0x6465780A and filesize < 1MB and all of them

In plain words (Heuristic)

  • The file must be smaller than 1MB (a cheap guard that skips large files).
  • All patterns in the rule must match.

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References

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: 87fb8b7a-bfac-4003-b618-50b4a7863928

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE