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MALPEDIA_Win_Elirks_Auto

autogenerated rule brought to you by yara-signator

MalwareElirksMalpedia 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: Elirks.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-elirks-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Elirks_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "cd911ada-2bb7-5d6c-984c-cbc6476379cc"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.elirks"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.elirks_auto.yar#L1-L126"
		license_url = "N/A"
		logic_hash = "06a7e02c8e6c3b7c16b98f734b079b23adfb7d12264dc7882b446e609acb76d2"
		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 = { 8b4c240c 8d54240c 52 8d442418 50 51 8d942424030000 }
		$sequence_1 = { 83c40c c20400 8b44241c 8b4c2410 85c9 750a }
		$sequence_2 = { 33dd 03c3 8bd8 c1e304 8be8 c1ed05 }
		$sequence_3 = { 51 8d94248c040000 52 ff15???????? 8bd8 83fbff 895c2410 }
		$sequence_4 = { 75d1 8bc6 5e 5d 5f c3 5e }
		$sequence_5 = { 55 6a02 55 55 6800000040 8d442468 50 }
		$sequence_6 = { eb14 80f940 7506 c6042a1a }
		$sequence_7 = { 8b542424 890a 7e19 8b4d00 80393c 740f 83c101 }
		$sequence_8 = { 8d54241c 52 50 56 55 }
		$sequence_9 = { 56 8bf0 8b4604 33c9 898e00600000 25ffffff00 }

	condition:
		7 of them and filesize < 81920
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b4c240c 8d54240c 52 8d442418 50 51 8d942424030000 }
$sequence_1hex{ 83c40c c20400 8b44241c 8b4c2410 85c9 750a }
$sequence_2hex{ 33dd 03c3 8bd8 c1e304 8be8 c1ed05 }
$sequence_3hex{ 51 8d94248c040000 52 ff15???????? 8bd8 83fbff 895c2410 }
$sequence_4hex{ 75d1 8bc6 5e 5d 5f c3 5e }
$sequence_5hex{ 55 6a02 55 55 6800000040 8d442468 50 }
$sequence_6hex{ eb14 80f940 7506 c6042a1a }
$sequence_7hex{ 8b542424 890a 7e19 8b4d00 80393c 740f 83c101 }
$sequence_8hex{ 8d54241c 52 50 56 55 }
$sequence_9hex{ 56 8bf0 8b4604 33c9 898e00600000 25ffffff00 }

Condition

7 of them and filesize < 81920

In plain words (Heuristic)

  • The file must be smaller than 81920 (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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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: cd911ada-2bb7-5d6c-984c-cbc6476379cc

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