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MALPEDIA_Win_Neddnloader_Auto

autogenerated rule brought to you by yara-signator

MalwareNeddnloaderMalpedia 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: Neddnloader.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-neddnloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Neddnloader_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6207542e-4fa7-556c-9586-03bf1612adfb"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.neddnloader"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.neddnloader_auto.yar#L1-L169"
		license_url = "N/A"
		logic_hash = "e340f7178c887aaf79b928e388602b49d7327ca73149e06abdddfe4d4128d099"
		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 = { e8???????? 2b5d10 83c40c 03df }
		$sequence_1 = { 8bec 83e4f8 81ec10060000 a1???????? 33c4 }
		$sequence_2 = { 8b450c 8908 ff15???????? 8bc7 }
		$sequence_3 = { 0fb702 0fb731 663bc6 7506 83c102 83c202 3bcb }
		$sequence_4 = { 3bcf 72f0 8d43ff 3bc8 7311 0fb702 0fb731 }
		$sequence_5 = { ff15???????? 8b4df8 56 3bc8 }
		$sequence_6 = { 8b03 8b5508 69c0b179379e c1e813 }
		$sequence_7 = { 41 8bc1 2b45fc 5f 5e }
		$sequence_8 = { 498bf8 488bea 4c8be1 85c0 7e57 448d68ff 488bf2 }
		$sequence_9 = { 488bce e8???????? 3bc7 7554 }
		$sequence_10 = { 4881ecc0080000 488b05???????? 4833c4 488985b0070000 488bf1 }
		$sequence_11 = { 488905???????? ff15???????? 488bc8 ff15???????? 488d1510410000 488bce 488905???????? }
		$sequence_12 = { 0f8c05010000 837c244c00 4c8b642450 0f84c5000000 488364242000 488d0599ee0000 }
		$sequence_13 = { 894ff8 e8???????? eb49 8b4704 0307 }
		$sequence_14 = { ba00010000 4889442420 e8???????? 4c8d45f0 ba00010000 488bcf }
		$sequence_15 = { 418b848c80510100 4189849c90b00100 418b848c80550100 4189849c90ac0100 418b848c80590100 4189849c90b80100 4903dd }

	condition:
		7 of them and filesize < 3438592
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? 2b5d10 83c40c 03df }
$sequence_1hex{ 8bec 83e4f8 81ec10060000 a1???????? 33c4 }
$sequence_2hex{ 8b450c 8908 ff15???????? 8bc7 }
$sequence_3hex{ 0fb702 0fb731 663bc6 7506 83c102 83c202 3bcb }
$sequence_4hex{ 3bcf 72f0 8d43ff 3bc8 7311 0fb702 0fb731 }
$sequence_5hex{ ff15???????? 8b4df8 56 3bc8 }
$sequence_6hex{ 8b03 8b5508 69c0b179379e c1e813 }
$sequence_7hex{ 41 8bc1 2b45fc 5f 5e }
$sequence_8hex{ 498bf8 488bea 4c8be1 85c0 7e57 448d68ff 488bf2 }
$sequence_9hex{ 488bce e8???????? 3bc7 7554 }
$sequence_10hex{ 4881ecc0080000 488b05???????? 4833c4 488985b0070000 488bf1 }
$sequence_11hex{ 488905???????? ff15???????? 488bc8 ff15???????? 488d1510410000 488bce 488905???????? }
$sequence_12hex{ 0f8c05010000 837c244c00 4c8b642450 0f84c5000000 488364242000 488d0599ee0000 }
$sequence_13hex{ 894ff8 e8???????? eb49 8b4704 0307 }
$sequence_14hex{ ba00010000 4889442420 e8???????? 4c8d45f0 ba00010000 488bcf }
$sequence_15hex{ 418b848c80510100 4189849c90b00100 418b848c80550100 4189849c90ac0100 418b848c80590100 4189849c90b80100 4903dd }

Condition

7 of them and filesize < 3438592

In plain words (Heuristic)

  • The file must be smaller than 3438592 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

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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: 6207542e-4fa7-556c-9586-03bf1612adfb

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