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MALPEDIA_Win_Xbtl_Auto

autogenerated rule brought to you by yara-signator

MalwareXbtlMalpedia 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: Xbtl.

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

Summary generated from the rule's metadata and condition.

Rule source

win-xbtl-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Xbtl_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "d5db6d09-8688-5faa-abdc-b73ea6228856"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.xbtl"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.xbtl_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "aad1f1f8d12723332af110ebc73e31d06fe847b4b1035c93d8a971bc90e13960"
		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 = { c1fa05 c1e006 030495e0c04200 eb05 b8???????? f6400420 7415 }
		$sequence_1 = { 8b85b4feffff 8db4169979825a 8b95b8feffff c1c902 83c705 8bde }
		$sequence_2 = { 6a00 6a03 6a00 6a01 6800000080 51 ffd3 }
		$sequence_3 = { 85f6 0f8594000000 3df0ff1f00 730c 8bc8 83e10f be10000000 }
		$sequence_4 = { 030495e0c04200 eb05 b8???????? f6400420 7415 53 6a00 }
		$sequence_5 = { 7405 e8???????? ba01000000 895608 }
		$sequence_6 = { 83c720 8945f0 3b45fc 7c87 bf00200000 33db }
		$sequence_7 = { 8b45fc 894df4 8bf0 3bc1 7c6b 8b4708 3daa55ff7f }
		$sequence_8 = { 53 57 8bf8 8bd9 85ff 743a 8d9b00000000 }
		$sequence_9 = { 6685c9 75f5 2bc2 6a00 d1f8 8d4dfc 51 }

	condition:
		7 of them and filesize < 401408
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c1fa05 c1e006 030495e0c04200 eb05 b8???????? f6400420 7415 }
$sequence_1hex{ 8b85b4feffff 8db4169979825a 8b95b8feffff c1c902 83c705 8bde }
$sequence_2hex{ 6a00 6a03 6a00 6a01 6800000080 51 ffd3 }
$sequence_3hex{ 85f6 0f8594000000 3df0ff1f00 730c 8bc8 83e10f be10000000 }
$sequence_4hex{ 030495e0c04200 eb05 b8???????? f6400420 7415 53 6a00 }
$sequence_5hex{ 7405 e8???????? ba01000000 895608 }
$sequence_6hex{ 83c720 8945f0 3b45fc 7c87 bf00200000 33db }
$sequence_7hex{ 8b45fc 894df4 8bf0 3bc1 7c6b 8b4708 3daa55ff7f }
$sequence_8hex{ 53 57 8bf8 8bd9 85ff 743a 8d9b00000000 }
$sequence_9hex{ 6685c9 75f5 2bc2 6a00 d1f8 8d4dfc 51 }

Condition

7 of them and filesize < 401408

In plain words (Heuristic)

  • The file must be smaller than 401408 (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.

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: d5db6d09-8688-5faa-abdc-b73ea6228856

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