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MALPEDIA_Win_Crosswalk_Auto

autogenerated rule brought to you by yara-signator

MalwareCrosswalkMalpedia 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: Crosswalk.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-crosswalk-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Crosswalk_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "7cf43d9f-bacd-5ede-9b50-cbf46214205f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.crosswalk"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.crosswalk_auto.yar#L1-L167"
		license_url = "N/A"
		logic_hash = "66a6f588ae9606cfadfda7951f064572a6601950dd15ac146973fdd58f684b57"
		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 = { 4c8bc6 33d2 410fbe00 49ffc0 d3ca 03d0 4183ef01 }
		$sequence_1 = { 33f6 8d6e20 8bcd e8???????? }
		$sequence_2 = { ff15???????? 448bf0 4533c9 4533c0 }
		$sequence_3 = { 458d7ee0 418bd7 ff15???????? 4821742420 }
		$sequence_4 = { 4883ec28 4885c9 7402 ffd1 }
		$sequence_5 = { 8bc2 c1e81f 03d0 69c2890e0000 }
		$sequence_6 = { 458bc6 33d2 488bc8 e8???????? 4533c9 4533c0 33d2 }
		$sequence_7 = { 418bc0 f7e9 03d1 c1fa0b 8bc2 }
		$sequence_8 = { 83e13f 6bc930 53 56 8b0485808e4100 33db 8b7508 }
		$sequence_9 = { 660fd60f 8d7f08 8b048d34024100 ffe0 f7c703000000 7413 8a06 }
		$sequence_10 = { 898850030000 8b4508 59 c74048f0844100 }
		$sequence_11 = { 33c9 8b450c 0fb684c8981a4100 c1e804 }
		$sequence_12 = { 75be ddd8 db2d???????? b802000000 833d????????00 0f85a0110000 8d0dc0584100 }
		$sequence_13 = { 6bd030 895de4 8b049d808e4100 8945d4 8955e8 }
		$sequence_14 = { 57 8bf9 0f1f440000 6a00 6a00 57 }
		$sequence_15 = { 6a00 50 6a0c 53 56 ff15???????? }

	condition:
		7 of them and filesize < 286720
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 4c8bc6 33d2 410fbe00 49ffc0 d3ca 03d0 4183ef01 }
$sequence_1hex{ 33f6 8d6e20 8bcd e8???????? }
$sequence_2hex{ ff15???????? 448bf0 4533c9 4533c0 }
$sequence_3hex{ 458d7ee0 418bd7 ff15???????? 4821742420 }
$sequence_4hex{ 4883ec28 4885c9 7402 ffd1 }
$sequence_5hex{ 8bc2 c1e81f 03d0 69c2890e0000 }
$sequence_6hex{ 458bc6 33d2 488bc8 e8???????? 4533c9 4533c0 33d2 }
$sequence_7hex{ 418bc0 f7e9 03d1 c1fa0b 8bc2 }
$sequence_8hex{ 83e13f 6bc930 53 56 8b0485808e4100 33db 8b7508 }
$sequence_9hex{ 660fd60f 8d7f08 8b048d34024100 ffe0 f7c703000000 7413 8a06 }
$sequence_10hex{ 898850030000 8b4508 59 c74048f0844100 }
$sequence_11hex{ 33c9 8b450c 0fb684c8981a4100 c1e804 }
$sequence_12hex{ 75be ddd8 db2d???????? b802000000 833d????????00 0f85a0110000 8d0dc0584100 }
$sequence_13hex{ 6bd030 895de4 8b049d808e4100 8945d4 8955e8 }
$sequence_14hex{ 57 8bf9 0f1f440000 6a00 6a00 57 }
$sequence_15hex{ 6a00 50 6a0c 53 56 ff15???????? }

Condition

7 of them and filesize < 286720

In plain words (Heuristic)

  • The file must be smaller than 286720 (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: 7cf43d9f-bacd-5ede-9b50-cbf46214205f

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