YARA · ESET malware-ioc

ESET_Apt_Windows_TA410_Tendyron_Dropper

TA410 Tendyron Dropper

APT / threat actorTendyron DropperESET malware-iocBSD 2-Clause LicenseCompiles with YARA-X

Author: ESET Research
Date: 2020-12-09
Modified: 2022-04-27
Score / Quality: 75 / 80

What this rule detects

TA410 Tendyron Dropper

Associated malware family: Tendyron Dropper.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-windows-ta410-tendyron-dropper.yarBSD 2-Clause License

rule ESET_Apt_Windows_TA410_Tendyron_Dropper
{
	meta:
		description = "TA410 Tendyron Dropper"
		author = "ESET Research"
		id = "8d1e16d9-b5c2-5427-a0b4-7dd00a9df5ec"
		date = "2020-12-09"
		modified = "2022-04-27"
		reference = "https://github.com/eset/malware-ioc/"
		source_url = "https://github.com/eset/malware-ioc/blob/17baf44964a77368e9149f4f593eb098beddf1c5/ta410/ta410.yar#L34-L53"
		license_url = "https://github.com/eset/malware-ioc/blob/17baf44964a77368e9149f4f593eb098beddf1c5/LICENSE"
		logic_hash = "45f7300a4b85624ad3fda5c73a24f53f53cb7990def4d84e04dcd8e5747f4f2e"
		score = 75
		quality = 80
		tags = ""
		license = "BSD 2-Clause"
		version = "1"

	strings:
		$s1 = "Global\\{F473B3BE-08EE-4710-A727-9E248F804F4A}" wide
		$s2 = "Global\\8D32CCB321B2" wide
		$s3 = "Global\\E4FE94F75490" wide
		$s4 = "Program Files (x86)\\Internet Explorer\\iexplore.exe" wide
		$s5 = "\\RPC Control\\OLE" wide
		$s6 = "ALPC Port" wide

	condition:
		int16 ( 0 ) == 0x5A4D and 4 of them
}

Strings (6 patterns)

Identifier	Type	Value	Modifiers
$s1	text	"Global\\{F473B3BE-08EE-4710-A727-9E248F804F4A}"	wide
$s2	text	"Global\\8D32CCB321B2"	wide
$s3	text	"Global\\E4FE94F75490"	wide
$s4	text	"Program Files (x86)\\Internet Explorer\\iexplore.exe"	wide
$s5	text	"\\RPC Control\\OLE"	wide
$s6	text	"ALPC Port"	wide

Condition

int16 ( 0 ) == 0x5A4D and 4 of them

In plain words (Heuristic)

At least 4 patterns in the rule must match.

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References

https://github.com/eset/malware-ioc/

Licence & attribution

Author: ESET Research

Source repository: ESET malware-ioc @ 17baf44964

Licence: BSD 2-Clause License (stated in the rule's own meta)

“BSD 2-Clause”

Original rule

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

Rule id: 8d1e16d9-b5c2-5427-a0b4-7dd00a9df5ec

Metadata

version	1

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