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MALPEDIA_Win_Kazuar_Auto

autogenerated rule brought to you by yara-signator

MalwareKazuarMalpedia 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: Kazuar.

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

Summary generated from the rule's metadata and condition.

Rule source

win-kazuar-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Kazuar_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c4456b1a-9a2d-5498-860f-aed8b8f72e28"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.kazuar"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.kazuar_auto.yar#L1-L115"
		license_url = "N/A"
		logic_hash = "f3465926116135563d59f857ea69bf0157f71e7ee10025cb20918f41dc519108"
		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 = { 8b0402 4c01d8 eb07 48ffc3 }
		$sequence_1 = { 5d 415c c3 4883ec48 e8???????? }
		$sequence_2 = { 31c0 4885c9 4989cb 89d7 7463 }
		$sequence_3 = { 8d8b00030000 894c2408 8d4b08 894c2404 }
		$sequence_4 = { 7463 4863493c 4c01d9 8bb188000000 85f6 7452 }
		$sequence_5 = { 740a 81ea00204000 01d0 eb02 31c0 5d c3 }
		$sequence_6 = { 41ffc1 4131c0 4569c097010001 ebdd }
		$sequence_7 = { 55 57 56 53 4883ec20 31c0 4885c9 }
		$sequence_8 = { 4863493c 4c01d9 8bb188000000 85f6 }
		$sequence_9 = { 8b10 894c2414 8d8b00020000 890424 894c2410 }

	condition:
		7 of them and filesize < 81920
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b0402 4c01d8 eb07 48ffc3 }
$sequence_1hex{ 5d 415c c3 4883ec48 e8???????? }
$sequence_2hex{ 31c0 4885c9 4989cb 89d7 7463 }
$sequence_3hex{ 8d8b00030000 894c2408 8d4b08 894c2404 }
$sequence_4hex{ 7463 4863493c 4c01d9 8bb188000000 85f6 7452 }
$sequence_5hex{ 740a 81ea00204000 01d0 eb02 31c0 5d c3 }
$sequence_6hex{ 41ffc1 4131c0 4569c097010001 ebdd }
$sequence_7hex{ 55 57 56 53 4883ec20 31c0 4885c9 }
$sequence_8hex{ 4863493c 4c01d9 8bb188000000 85f6 }
$sequence_9hex{ 8b10 894c2414 8d8b00020000 890424 894c2410 }

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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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: c4456b1a-9a2d-5498-860f-aed8b8f72e28

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

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