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MALPEDIA_Win_Marap_Auto

autogenerated rule brought to you by yara-signator

MalwareMarapMalpedia 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: Marap.

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

Summary generated from the rule's metadata and condition.

Rule source

win-marap-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Marap_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b10f821b-8ff2-589d-803b-f9a90d7546d1"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.marap"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.marap_auto.yar#L1-L117"
		license_url = "N/A"
		logic_hash = "546aba24f6e8400321dff7dca511f4540ee158508029bfb4a7f44eaf5c6b5908"
		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 = { 53 57 52 50 51 68???????? }
		$sequence_1 = { c1f805 8b048580320110 83e61f c1e606 }
		$sequence_2 = { 8d3c8580320110 8b07 c1e606 f644300401 7436 833c30ff }
		$sequence_3 = { 6a01 57 68???????? 89bda8fdffff }
		$sequence_4 = { 68???????? 8d9662030000 e8???????? 8b3d???????? 83c410 68???????? 68???????? }
		$sequence_5 = { eb22 8386e41d00000f eb19 8386e41d000010 }
		$sequence_6 = { 0f848d000000 8bc6 8d5002 668b08 83c002 663bcf 75f5 }
		$sequence_7 = { 895df8 0f8576ffffff 8bd7 5f 8bc6 5e }
		$sequence_8 = { 50 8dbeb2010000 57 e8???????? }
		$sequence_9 = { 6683f858 770f 0fb7c2 0fbe80d8cb0010 83e00f }

	condition:
		7 of them and filesize < 188416
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 53 57 52 50 51 68???????? }
$sequence_1hex{ c1f805 8b048580320110 83e61f c1e606 }
$sequence_2hex{ 8d3c8580320110 8b07 c1e606 f644300401 7436 833c30ff }
$sequence_3hex{ 6a01 57 68???????? 89bda8fdffff }
$sequence_4hex{ 68???????? 8d9662030000 e8???????? 8b3d???????? 83c410 68???????? 68???????? }
$sequence_5hex{ eb22 8386e41d00000f eb19 8386e41d000010 }
$sequence_6hex{ 0f848d000000 8bc6 8d5002 668b08 83c002 663bcf 75f5 }
$sequence_7hex{ 895df8 0f8576ffffff 8bd7 5f 8bc6 5e }
$sequence_8hex{ 50 8dbeb2010000 57 e8???????? }
$sequence_9hex{ 6683f858 770f 0fb7c2 0fbe80d8cb0010 83e00f }

Condition

7 of them and filesize < 188416

In plain words (Heuristic)

  • The file must be smaller than 188416 (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: b10f821b-8ff2-589d-803b-f9a90d7546d1

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