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MALPEDIA_Win_Coredn_Auto

autogenerated rule brought to you by yara-signator

MalwareCorednMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Coredn.

It defines 15 patterns (0 text, 15 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-coredn-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Coredn_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "e9fc964d-6932-50e6-9a6d-da9755e9c916"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.coredn"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.coredn_auto.yar#L1-L161"
		license_url = "N/A"
		logic_hash = "7d9edbb68b504dec3f9ba24b68f1383d8814ab8f2dfe1d64015ce60053d3dd65"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 51 56 8d45fc 8bf1 50 e8???????? 85c0 }
		$sequence_1 = { 7415 8801 41 83ea01 }
		$sequence_2 = { 53 57 bf00000000 8d0432 2bca 7438 }
		$sequence_3 = { 741c 8818 4a 40 83e901 75ec }
		$sequence_4 = { 5e 5d c20400 c60100 33c0 }
		$sequence_5 = { 7423 8a1c06 84db 741c }
		$sequence_6 = { 0f1f440000 3811 7408 41 83e801 75f6 }
		$sequence_7 = { 41 83ea01 75e7 8851ff b87a000780 }
		$sequence_8 = { 740b 6a01 50 e8???????? 83c408 8b442420 85c0 }
		$sequence_9 = { 50 e8???????? 83c40c 6b45e430 8945e0 8d80a8304100 }
		$sequence_10 = { e8???????? 83c408 8d842490040000 50 }
		$sequence_11 = { 8365fc00 8b049d08414100 8b4de0 f644082801 7515 }
		$sequence_12 = { 668945e8 8b45d4 886de5 8b148508414100 8a4c1a2d f6c104 7419 }
		$sequence_13 = { 6808020000 8d842494040000 6a00 50 e8???????? }
		$sequence_14 = { 8bcf 8bc7 894de4 399898304100 0f84ea000000 }

	condition:
		7 of them and filesize < 270336
}

Strings (15 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 51 56 8d45fc 8bf1 50 e8???????? 85c0 }
$sequence_1hex{ 7415 8801 41 83ea01 }
$sequence_2hex{ 53 57 bf00000000 8d0432 2bca 7438 }
$sequence_3hex{ 741c 8818 4a 40 83e901 75ec }
$sequence_4hex{ 5e 5d c20400 c60100 33c0 }
$sequence_5hex{ 7423 8a1c06 84db 741c }
$sequence_6hex{ 0f1f440000 3811 7408 41 83e801 75f6 }
$sequence_7hex{ 41 83ea01 75e7 8851ff b87a000780 }
$sequence_8hex{ 740b 6a01 50 e8???????? 83c408 8b442420 85c0 }
$sequence_9hex{ 50 e8???????? 83c40c 6b45e430 8945e0 8d80a8304100 }
$sequence_10hex{ e8???????? 83c408 8d842490040000 50 }
$sequence_11hex{ 8365fc00 8b049d08414100 8b4de0 f644082801 7515 }
$sequence_12hex{ 668945e8 8b45d4 886de5 8b148508414100 8a4c1a2d f6c104 7419 }
$sequence_13hex{ 6808020000 8d842494040000 6a00 50 e8???????? }
$sequence_14hex{ 8bcf 8bc7 894de4 399898304100 0f84ea000000 }

Condition

7 of them and filesize < 270336

In plain words (Heuristic)

  • The file must be smaller than 270336 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

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

Rule id: e9fc964d-6932-50e6-9a6d-da9755e9c916

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE