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MALPEDIA_Win_Sienna_Purple_Auto

autogenerated rule brought to you by yara-signator

MalwareSienna PurpleMalpedia 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: Sienna Purple.

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

Summary generated from the rule's metadata and condition.

Rule source

win-sienna-purple-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sienna_Purple_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "8f472cd6-bdb2-5139-b94c-106a2662100e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sienna_purple"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sienna_purple_auto.yar#L1-L133"
		license_url = "N/A"
		logic_hash = "8c4e4b97a374adb59fce01582b86646d832e8c684fa39718b2059fd1028c8d1b"
		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 = { c7833405000000000000 8b8b24050000 85c9 740f e8???????? c7832405000000000000 8d8b54010000 }
		$sequence_1 = { eb6b 80f9ff 7566 807f01fe 7560 807f0200 755a }
		$sequence_2 = { ff35???????? a3???????? ffd6 833d????????00 a3???????? 745a }
		$sequence_3 = { c1e918 8845d6 884dd7 8b8d60ffffff 8bc1 c1e808 8845d9 }
		$sequence_4 = { e8???????? 84c0 0f8499000000 85ff 7415 57 8d85f0feffff }
		$sequence_5 = { d1ff 8bc7 897584 89bd6cffffff c7459c00000000 c7458c70105000 251f000080 }
		$sequence_6 = { ba01000000 894608 8d04fd00000000 2bc7 c1e002 2bd8 8b4604 }
		$sequence_7 = { e8???????? 33c0 85f6 0f855bffffff 85c0 740f 50 }
		$sequence_8 = { c3 3d2d4f0000 7557 833d????????00 0f8599070000 50 e8???????? }
		$sequence_9 = { e8???????? 83c40c ff75e0 e8???????? 83c404 8bc6 8b4df4 }

	condition:
		7 of them and filesize < 2930688
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c7833405000000000000 8b8b24050000 85c9 740f e8???????? c7832405000000000000 8d8b54010000 }
$sequence_1hex{ eb6b 80f9ff 7566 807f01fe 7560 807f0200 755a }
$sequence_2hex{ ff35???????? a3???????? ffd6 833d????????00 a3???????? 745a }
$sequence_3hex{ c1e918 8845d6 884dd7 8b8d60ffffff 8bc1 c1e808 8845d9 }
$sequence_4hex{ e8???????? 84c0 0f8499000000 85ff 7415 57 8d85f0feffff }
$sequence_5hex{ d1ff 8bc7 897584 89bd6cffffff c7459c00000000 c7458c70105000 251f000080 }
$sequence_6hex{ ba01000000 894608 8d04fd00000000 2bc7 c1e002 2bd8 8b4604 }
$sequence_7hex{ e8???????? 33c0 85f6 0f855bffffff 85c0 740f 50 }
$sequence_8hex{ c3 3d2d4f0000 7557 833d????????00 0f8599070000 50 e8???????? }
$sequence_9hex{ e8???????? 83c40c ff75e0 e8???????? 83c404 8bc6 8b4df4 }

Condition

7 of them and filesize < 2930688

In plain words (Heuristic)

  • The file must be smaller than 2930688 (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: 8f472cd6-bdb2-5139-b94c-106a2662100e

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