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MALPEDIA_Win_Credraptor_Auto

autogenerated rule brought to you by yara-signator

MalwareCredraptorMalpedia 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: Credraptor.

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

Summary generated from the rule's metadata and condition.

Rule source

win-credraptor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Credraptor_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "9d0b1027-08e6-50d3-a781-8fb7ecf31e45"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.credraptor"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.credraptor_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "fe9ed9ed58c22287dd1af580d8d6d2ff7795312c2dc30f56a9c696ba71ba8156"
		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 = { 8b54080c f6424e01 753a 83fb01 7435 8b4508 50 }
		$sequence_1 = { ffd3 6804010000 6a00 85c0 7435 8d95f8feffff 52 }
		$sequence_2 = { ddd8 83c8ff 8be5 5d c3 dc0d???????? e8???????? }
		$sequence_3 = { eb06 891e c6460401 8b4610 83f8ff 7449 8d48d0 }
		$sequence_4 = { 8d55a8 52 8945a8 8945ac 8b45ec 6a12 50 }
		$sequence_5 = { b801000000 014748 8945d8 8b4748 50 6a00 6a1c }
		$sequence_6 = { c3 8b5018 53 8b5838 56 8b31 895588 }
		$sequence_7 = { f6411604 8945ac 8944bde8 7440 8b9cbd64ffffff 8b55ac 8bc3 }
		$sequence_8 = { e8???????? 50 8bf3 68???????? 8d5f04 e8???????? 8b5df8 }
		$sequence_9 = { ff2485b1024900 838de8fdffffff 89b594fdffff 89b5bcfdffff 89b5ccfdffff 89b5d0fdffff 89b5f0fdffff }

	condition:
		7 of them and filesize < 1728512
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b54080c f6424e01 753a 83fb01 7435 8b4508 50 }
$sequence_1hex{ ffd3 6804010000 6a00 85c0 7435 8d95f8feffff 52 }
$sequence_2hex{ ddd8 83c8ff 8be5 5d c3 dc0d???????? e8???????? }
$sequence_3hex{ eb06 891e c6460401 8b4610 83f8ff 7449 8d48d0 }
$sequence_4hex{ 8d55a8 52 8945a8 8945ac 8b45ec 6a12 50 }
$sequence_5hex{ b801000000 014748 8945d8 8b4748 50 6a00 6a1c }
$sequence_6hex{ c3 8b5018 53 8b5838 56 8b31 895588 }
$sequence_7hex{ f6411604 8945ac 8944bde8 7440 8b9cbd64ffffff 8b55ac 8bc3 }
$sequence_8hex{ e8???????? 50 8bf3 68???????? 8d5f04 e8???????? 8b5df8 }
$sequence_9hex{ ff2485b1024900 838de8fdffffff 89b594fdffff 89b5bcfdffff 89b5ccfdffff 89b5d0fdffff 89b5f0fdffff }

Condition

7 of them and filesize < 1728512

In plain words (Heuristic)

  • The file must be smaller than 1728512 (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: 9d0b1027-08e6-50d3-a781-8fb7ecf31e45

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