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MALPEDIA_Win_Lechiket_Auto

autogenerated rule brought to you by yara-signator

MalwareLechiketMalpedia 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: Lechiket.

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

Summary generated from the rule's metadata and condition.

Rule source

win-lechiket-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lechiket_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "50bb5ff6-9983-5192-9148-15d4b532b4b7"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.lechiket"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lechiket_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "65d3ebe3766eacf2dda256f82461ccb140fa71b5f9a496a2aff1df45cdefa7ae"
		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 = { 6a06 59 8d7db8 f3ab 8d7dd0 ab ab }
		$sequence_1 = { 8908 8b06 c74004???????? a1???????? ba???????? 33c9 }
		$sequence_2 = { 0f8569ffffff 0fb7480c 014d0c 8b4dfc 41 394d0c 0f8755ffffff }
		$sequence_3 = { e8???????? 68???????? 8d45e4 50 ffd7 ff4df4 }
		$sequence_4 = { 50 e8???????? 8bf8 85ff 7414 ff750c ff7508 }
		$sequence_5 = { 8bff 55 8bec 83ec78 53 }
		$sequence_6 = { 8b45f4 8b4dec 8d4401f8 898564fdffff 897004 8d856cffffff 50 }
		$sequence_7 = { 7726 0fbe4813 0fbe5014 83e930 6bc90a 8d4c11d0 49 }
		$sequence_8 = { 6639460a 0f8494000000 0fb7560a 3bd0 761d 8b4e18 }
		$sequence_9 = { 57 68fe050000 33f6 8d85f4f9ffff 56 50 e8???????? }

	condition:
		7 of them and filesize < 331776
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 6a06 59 8d7db8 f3ab 8d7dd0 ab ab }
$sequence_1hex{ 8908 8b06 c74004???????? a1???????? ba???????? 33c9 }
$sequence_2hex{ 0f8569ffffff 0fb7480c 014d0c 8b4dfc 41 394d0c 0f8755ffffff }
$sequence_3hex{ e8???????? 68???????? 8d45e4 50 ffd7 ff4df4 }
$sequence_4hex{ 50 e8???????? 8bf8 85ff 7414 ff750c ff7508 }
$sequence_5hex{ 8bff 55 8bec 83ec78 53 }
$sequence_6hex{ 8b45f4 8b4dec 8d4401f8 898564fdffff 897004 8d856cffffff 50 }
$sequence_7hex{ 7726 0fbe4813 0fbe5014 83e930 6bc90a 8d4c11d0 49 }
$sequence_8hex{ 6639460a 0f8494000000 0fb7560a 3bd0 761d 8b4e18 }
$sequence_9hex{ 57 68fe050000 33f6 8d85f4f9ffff 56 50 e8???????? }

Condition

7 of them and filesize < 331776

In plain words (Heuristic)

  • The file must be smaller than 331776 (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: 50bb5ff6-9983-5192-9148-15d4b532b4b7

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