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MALPEDIA_Win_Unidentified_073_Auto

autogenerated rule brought to you by yara-signator

MalwareMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2022-08-05
Modified
2022-08-08
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

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

Summary generated from the rule's metadata and condition.

Rule source

win-unidentified-073-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_073_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0ba61f73-e46a-5f54-853f-f1f3b502ee26"
		date = "2022-08-05"
		modified = "2022-08-08"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_073"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_073_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "8100472ca712d569bbcdb570af72e3f13986092b4d8ee8e3873da55bef76232d"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20220805"
		malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
		malpedia_version = "20220808"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 8d8538ffffff 6a00 c746180f000000 8bce }
		$sequence_1 = { c684242801000019 e8???????? 68???????? 8d8c24c0000000 e8???????? 6aff }
		$sequence_2 = { 8bce c7461400000000 50 c6460400 e8???????? 83ec1c 8bf4 }
		$sequence_3 = { 7846 8b451c 8b0e 2bc1 3bc3 7c53 }
		$sequence_4 = { 8b0d???????? 894df8 eb09 8b55f8 83ea01 8955f8 837df800 }
		$sequence_5 = { 6a00 8d8424dc000000 50 8d4c2454 e8???????? 83ec1c 8d84240c010000 }
		$sequence_6 = { 8bec 51 894dfc c705????????90664a00 833d????????00 741c }
		$sequence_7 = { 6bd103 8982a0784a00 68???????? 8b45fc 50 ff15???????? }
		$sequence_8 = { 0fb74df8 894de0 668b55e0 668955f8 0fb745fc 0fb74df8 3bc1 }
		$sequence_9 = { 57 6aff 68???????? 50 ff15???????? }

	condition:
		7 of them and filesize < 1974272
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d8538ffffff 6a00 c746180f000000 8bce }
$sequence_1hex{ c684242801000019 e8???????? 68???????? 8d8c24c0000000 e8???????? 6aff }
$sequence_2hex{ 8bce c7461400000000 50 c6460400 e8???????? 83ec1c 8bf4 }
$sequence_3hex{ 7846 8b451c 8b0e 2bc1 3bc3 7c53 }
$sequence_4hex{ 8b0d???????? 894df8 eb09 8b55f8 83ea01 8955f8 837df800 }
$sequence_5hex{ 6a00 8d8424dc000000 50 8d4c2454 e8???????? 83ec1c 8d84240c010000 }
$sequence_6hex{ 8bec 51 894dfc c705????????90664a00 833d????????00 741c }
$sequence_7hex{ 6bd103 8982a0784a00 68???????? 8b45fc 50 ff15???????? }
$sequence_8hex{ 0fb74df8 894de0 668b55e0 668955f8 0fb745fc 0fb74df8 3bc1 }
$sequence_9hex{ 57 6aff 68???????? 50 ff15???????? }

Condition

7 of them and filesize < 1974272

In plain words (Heuristic)

  • The file must be smaller than 1974272 (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: 0ba61f73-e46a-5f54-853f-f1f3b502ee26

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20220805
malpedia_hash6ec06c64bcfdbeda64eff021c766b4ce34542b71
malpedia_version20220808
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE