Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Hotwax_Auto

autogenerated rule brought to you by yara-signator

MalwareHotwaxMalpedia 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: Hotwax.

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

Summary generated from the rule's metadata and condition.

Rule source

win-hotwax-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hotwax_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "e7883842-4ab7-56d4-bdc0-e343dca93854"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.hotwax"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hotwax_auto.yar#L1-L111"
		license_url = "N/A"
		logic_hash = "eaf252828d91fc78ae2ff8650e17192fb78acb3462494b34fd0114c903c1e1d4"
		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 = { 85c9 743f 83f902 7605 }
		$sequence_1 = { 4863d9 488d2d57960000 488bfb 83e31f 48c1ff05 }
		$sequence_2 = { 488d05f9b70000 c3 4053 4883ec20 }
		$sequence_3 = { 418b8790000000 85c0 0f8491010000 488d2c02 }
		$sequence_4 = { 48c1f805 4c8d0573710000 83e11f 486bc958 498b04c0 80640808fe }
		$sequence_5 = { 49c1ff05 83e61f 4b8b8cf9a04b0100 486bf658 8a443108 a801 }
		$sequence_6 = { b81a000000 eb76 33c9 488d158bb70000 }
		$sequence_7 = { 8b430c 8905???????? 8bd7 4c8d0518b4ffff 89542420 }
		$sequence_8 = { 41b803010000 c644243000 e8???????? 488bcb }
		$sequence_9 = { 8a45d9 4b8b8cf8a04b0100 88443139 4b8b84f8a04b0100 8854303a }

	condition:
		7 of them and filesize < 198656
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 85c9 743f 83f902 7605 }
$sequence_1hex{ 4863d9 488d2d57960000 488bfb 83e31f 48c1ff05 }
$sequence_2hex{ 488d05f9b70000 c3 4053 4883ec20 }
$sequence_3hex{ 418b8790000000 85c0 0f8491010000 488d2c02 }
$sequence_4hex{ 48c1f805 4c8d0573710000 83e11f 486bc958 498b04c0 80640808fe }
$sequence_5hex{ 49c1ff05 83e61f 4b8b8cf9a04b0100 486bf658 8a443108 a801 }
$sequence_6hex{ b81a000000 eb76 33c9 488d158bb70000 }
$sequence_7hex{ 8b430c 8905???????? 8bd7 4c8d0518b4ffff 89542420 }
$sequence_8hex{ 41b803010000 c644243000 e8???????? 488bcb }
$sequence_9hex{ 8a45d9 4b8b8cf8a04b0100 88443139 4b8b84f8a04b0100 8854303a }

Condition

7 of them and filesize < 198656

In plain words (Heuristic)

  • The file must be smaller than 198656 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

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

Open in editor

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: e7883842-4ab7-56d4-bdc0-e343dca93854

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