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MALPEDIA_Win_Railsetter_Auto

autogenerated rule brought to you by yara-signator

MalwareRailsetterMalpedia 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: Railsetter.

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

Summary generated from the rule's metadata and condition.

Rule source

win-railsetter-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Railsetter_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c45e5098-e995-5824-9e1f-fff841727b35"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.railsetter"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.railsetter_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "621471e8e170b617c4c45d2d76a4272856dd60bf407e6bda7ff43a732023d384"
		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 = { 33c9 894c2448 4585c9 742d 488d05e6f40200 488903 48894b18 }
		$sequence_1 = { 0f1006 0f294517 4883781000 7415 41b802000000 488d153e310500 }
		$sequence_2 = { 488d0d24f60200 0f57c0 4889442420 48890b 488d5308 488d4c2420 0f1102 }
		$sequence_3 = { b903000000 4c8d05a7920200 e8???????? 488bd3 8bcf 4885c0 7408 }
		$sequence_4 = { 488d1d9eef0000 eb52 bac0020000 b901000000 e8???????? 488bd8 4885c0 }
		$sequence_5 = { 33d2 41b810010000 488d4df4 e8???????? c745f014010000 488d4df0 ff15???????? }
		$sequence_6 = { 48896810 48897018 48897820 4156 33ed 4c8d3576470100 }
		$sequence_7 = { 498bc2 458bf1 48c1f806 488d0d08bf0200 4183e23f 4d03f0 49c1e206 }
		$sequence_8 = { 48c745780f000000 44886d60 ba20000000 488d0def160500 e8???????? c744243010000000 488d542430 }
		$sequence_9 = { 48894517 c6451f01 488d4d17 e8???????? 488d05b94a0400 488903 488b55e7 }

	condition:
		7 of them and filesize < 866304
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 33c9 894c2448 4585c9 742d 488d05e6f40200 488903 48894b18 }
$sequence_1hex{ 0f1006 0f294517 4883781000 7415 41b802000000 488d153e310500 }
$sequence_2hex{ 488d0d24f60200 0f57c0 4889442420 48890b 488d5308 488d4c2420 0f1102 }
$sequence_3hex{ b903000000 4c8d05a7920200 e8???????? 488bd3 8bcf 4885c0 7408 }
$sequence_4hex{ 488d1d9eef0000 eb52 bac0020000 b901000000 e8???????? 488bd8 4885c0 }
$sequence_5hex{ 33d2 41b810010000 488d4df4 e8???????? c745f014010000 488d4df0 ff15???????? }
$sequence_6hex{ 48896810 48897018 48897820 4156 33ed 4c8d3576470100 }
$sequence_7hex{ 498bc2 458bf1 48c1f806 488d0d08bf0200 4183e23f 4d03f0 49c1e206 }
$sequence_8hex{ 48c745780f000000 44886d60 ba20000000 488d0def160500 e8???????? c744243010000000 488d542430 }
$sequence_9hex{ 48894517 c6451f01 488d4d17 e8???????? 488d05b94a0400 488903 488b55e7 }

Condition

7 of them and filesize < 866304

In plain words (Heuristic)

  • The file must be smaller than 866304 (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: c45e5098-e995-5824-9e1f-fff841727b35

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