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MALPEDIA_Win_Splitloader_Auto

autogenerated rule brought to you by yara-signator

MalwareSplitloaderMalpedia 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: Splitloader.

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

Summary generated from the rule's metadata and condition.

Rule source

win-splitloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Splitloader_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "921d3356-2722-53ac-8250-dd0cc7ea5e5b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.splitloader"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.splitloader_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "d6a390b70948f794f39be9da944fc8149cfb46ac0abcc61ba408624052ca713e"
		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 = { 418b8424f82a0000 4129b424fc2a0000 297518 01751c 418b8c24fc2a0000 03c6 }
		$sequence_1 = { ffc2 4183f802 7514 81fa04010000 730c 4885c9 }
		$sequence_2 = { 4883c108 48ffcb 7409 488b05???????? ebe6 4533c0 488d1593970000 }
		$sequence_3 = { ff15???????? 85c0 7445 4863ef 488d0dfcb20000 }
		$sequence_4 = { 4883c002 66443918 74f6 0fb708 85c9 7467 }
		$sequence_5 = { 7436 90 66413bc1 742f }
		$sequence_6 = { 488b442470 4c2bdb 4c8918 41f6c209 0f8432010000 4585e4 0f8829010000 }
		$sequence_7 = { ff15???????? 448b5c2440 41bc08000000 8bd6 458bd4 448bce }
		$sequence_8 = { eb0a 4883c002 41ba22000000 0fb708 6683f922 7438 90 }
		$sequence_9 = { 6644391f 750e 0f1f4000 4883c702 }

	condition:
		7 of them and filesize < 174080
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 418b8424f82a0000 4129b424fc2a0000 297518 01751c 418b8c24fc2a0000 03c6 }
$sequence_1hex{ ffc2 4183f802 7514 81fa04010000 730c 4885c9 }
$sequence_2hex{ 4883c108 48ffcb 7409 488b05???????? ebe6 4533c0 488d1593970000 }
$sequence_3hex{ ff15???????? 85c0 7445 4863ef 488d0dfcb20000 }
$sequence_4hex{ 4883c002 66443918 74f6 0fb708 85c9 7467 }
$sequence_5hex{ 7436 90 66413bc1 742f }
$sequence_6hex{ 488b442470 4c2bdb 4c8918 41f6c209 0f8432010000 4585e4 0f8829010000 }
$sequence_7hex{ ff15???????? 448b5c2440 41bc08000000 8bd6 458bd4 448bce }
$sequence_8hex{ eb0a 4883c002 41ba22000000 0fb708 6683f922 7438 90 }
$sequence_9hex{ 6644391f 750e 0f1f4000 4883c702 }

Condition

7 of them and filesize < 174080

In plain words (Heuristic)

  • The file must be smaller than 174080 (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: 921d3356-2722-53ac-8250-dd0cc7ea5e5b

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