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MALPEDIA_Win_Helminth_Auto

autogenerated rule brought to you by yara-signator

MalwareHelminthMalpedia 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: Helminth.

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

Summary generated from the rule's metadata and condition.

Rule source

win-helminth-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Helminth_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "91b777dc-9a9a-53e2-ac1a-786f5d0ed930"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.helminth"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.helminth_auto.yar#L1-L157"
		license_url = "N/A"
		logic_hash = "45ac2fe31629115cc6c58e0ba75e5ac93218e89992c3db653af839bde17af43a"
		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 = { a1???????? 68e8030000 8907 e8???????? }
		$sequence_1 = { b9???????? e8???????? b9???????? e8???????? 8b35???????? b800100000 8b0d???????? }
		$sequence_2 = { 897de0 8b049d70750110 0500080000 3bf8 0f839c000000 f6470401 755b }
		$sequence_3 = { ffb5f4fdffff 8d85fcfdffff 6a0a 6a01 57 50 }
		$sequence_4 = { c1e106 8b048570750110 804c080420 8b4d14 }
		$sequence_5 = { 75f0 8b75f0 b9???????? 8bd6 2bd1 }
		$sequence_6 = { 895df0 ff15???????? 50 ff15???????? 85c0 7406 8d4df4 }
		$sequence_7 = { 2c2c 13142c 2c2c 2c2c }
		$sequence_8 = { 2b742414 894c2424 0fb70a 66890c16 8d5202 }
		$sequence_9 = { 68???????? 50 ff15???????? 8945c0 85c0 }
		$sequence_10 = { e8???????? 8b75c8 59 56 }
		$sequence_11 = { 66890c17 8d5202 6685c9 75f1 8b542410 33ff }
		$sequence_12 = { 663b0473 7510 46 42 3bd7 7ced }
		$sequence_13 = { 75f4 2b4d08 d1f9 3bd1 }
		$sequence_14 = { 50 e8???????? 83c40c 89b5e8feffff }

	condition:
		7 of them and filesize < 479232
}

Strings (15 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ a1???????? 68e8030000 8907 e8???????? }
$sequence_1hex{ b9???????? e8???????? b9???????? e8???????? 8b35???????? b800100000 8b0d???????? }
$sequence_2hex{ 897de0 8b049d70750110 0500080000 3bf8 0f839c000000 f6470401 755b }
$sequence_3hex{ ffb5f4fdffff 8d85fcfdffff 6a0a 6a01 57 50 }
$sequence_4hex{ c1e106 8b048570750110 804c080420 8b4d14 }
$sequence_5hex{ 75f0 8b75f0 b9???????? 8bd6 2bd1 }
$sequence_6hex{ 895df0 ff15???????? 50 ff15???????? 85c0 7406 8d4df4 }
$sequence_7hex{ 2c2c 13142c 2c2c 2c2c }
$sequence_8hex{ 2b742414 894c2424 0fb70a 66890c16 8d5202 }
$sequence_9hex{ 68???????? 50 ff15???????? 8945c0 85c0 }
$sequence_10hex{ e8???????? 8b75c8 59 56 }
$sequence_11hex{ 66890c17 8d5202 6685c9 75f1 8b542410 33ff }
$sequence_12hex{ 663b0473 7510 46 42 3bd7 7ced }
$sequence_13hex{ 75f4 2b4d08 d1f9 3bd1 }
$sequence_14hex{ 50 e8???????? 83c40c 89b5e8feffff }

Condition

7 of them and filesize < 479232

In plain words (Heuristic)

  • The file must be smaller than 479232 (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: 91b777dc-9a9a-53e2-ac1a-786f5d0ed930

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