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MALPEDIA_Win_Multigrain_Pos_Auto

autogenerated rule brought to you by yara-signator

MalwareMultigrain PosMalpedia 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: Multigrain Pos.

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

Summary generated from the rule's metadata and condition.

Rule source

win-multigrain-pos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Multigrain_Pos_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "a4a1cae2-1512-5d4d-8ce3-dd32c9bd5d2a"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.multigrain_pos"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.multigrain_pos_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "d5069ea6530260a05521f39bb3ca469cce973145cb25df99123096d23a4291a9"
		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 = { 0fb609 83e101 c1e104 0b4df4 40 }
		$sequence_1 = { 8b550c 46 83c702 3b01 0f823efeffff 8b55f8 }
		$sequence_2 = { 68???????? 8bd0 8d8dd0fdffff c645fc01 }
		$sequence_3 = { ff15???????? 33c0 c785ccfdffff07000000 c785c8fdffff00000000 668985b8fdffff 663985e8fdffff }
		$sequence_4 = { e8???????? 894610 6800040000 8d4618 }
		$sequence_5 = { 8bd0 8d4dd8 c645fc03 e8???????? }
		$sequence_6 = { 8d45c0 50 e8???????? 8d45d8 50 c745fc00000000 e8???????? }
		$sequence_7 = { 1bc0 f7d8 5e 5d c20800 85f6 750f }
		$sequence_8 = { 83ec10 894df8 8bca 56 33c0 33f6 8955fc }
		$sequence_9 = { e8???????? 83c418 8db324040000 8d5e14 }

	condition:
		7 of them and filesize < 286720
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 0fb609 83e101 c1e104 0b4df4 40 }
$sequence_1hex{ 8b550c 46 83c702 3b01 0f823efeffff 8b55f8 }
$sequence_2hex{ 68???????? 8bd0 8d8dd0fdffff c645fc01 }
$sequence_3hex{ ff15???????? 33c0 c785ccfdffff07000000 c785c8fdffff00000000 668985b8fdffff 663985e8fdffff }
$sequence_4hex{ e8???????? 894610 6800040000 8d4618 }
$sequence_5hex{ 8bd0 8d4dd8 c645fc03 e8???????? }
$sequence_6hex{ 8d45c0 50 e8???????? 8d45d8 50 c745fc00000000 e8???????? }
$sequence_7hex{ 1bc0 f7d8 5e 5d c20800 85f6 750f }
$sequence_8hex{ 83ec10 894df8 8bca 56 33c0 33f6 8955fc }
$sequence_9hex{ e8???????? 83c418 8db324040000 8d5e14 }

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: a4a1cae2-1512-5d4d-8ce3-dd32c9bd5d2a

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