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MALPEDIA_Win_Unidentified_102_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
2023-07-11
Modified
2023-07-15
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-102-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_102_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "68f5ede2-e772-5b9c-86c7-72da7d6ddaff"
		date = "2023-07-11"
		modified = "2023-07-15"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_102"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_102_auto.yar#L1-L130"
		license_url = "N/A"
		logic_hash = "7cf959abf8b06a75a101a66334f27ae5601df812c1ddb140fd9298ef735bb0dc"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20230705"
		malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
		malpedia_version = "20230715"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 6bd238 8b0c8d187b0410 88441129 8b0b 8bc1 c1f806 }
		$sequence_1 = { 83c408 8bb5e8fdffff 8dbdd8fdffff 83bdecfdffff10 c745b000000000 0f43bdd8fdffff }
		$sequence_2 = { 8bf3 6bf938 c1fe06 6a00 8b0cb5187b0410 ff740f24 }
		$sequence_3 = { 894610 c7461407000000 668906 e9???????? 837f1410 8bcf 7202 }
		$sequence_4 = { c785e4fbffff07000000 8d5102 668985d0fbffff 6690 668b01 83c102 6685c0 }
		$sequence_5 = { 8d85e8e7ffff 68???????? 50 ff15???????? 83c410 8d8594e7ffff 50 }
		$sequence_6 = { 0f1085b0fcffff 0f1100 8bc4 0f108590fcffff 51 0f1100 ff5228 }
		$sequence_7 = { 83c408 8b95dcfeffff 83fa10 722f 8b8dc8feffff 42 8bc1 }
		$sequence_8 = { 6a00 68???????? 6802000080 c785c8e7ffff3f000f00 ff15???????? 85c0 0f84ef000000 }
		$sequence_9 = { 8d45f4 64a300000000 8965f0 8b4510 8b4d18 8b5d0c }

	condition:
		7 of them and filesize < 626688
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 6bd238 8b0c8d187b0410 88441129 8b0b 8bc1 c1f806 }
$sequence_1hex{ 83c408 8bb5e8fdffff 8dbdd8fdffff 83bdecfdffff10 c745b000000000 0f43bdd8fdffff }
$sequence_2hex{ 8bf3 6bf938 c1fe06 6a00 8b0cb5187b0410 ff740f24 }
$sequence_3hex{ 894610 c7461407000000 668906 e9???????? 837f1410 8bcf 7202 }
$sequence_4hex{ c785e4fbffff07000000 8d5102 668985d0fbffff 6690 668b01 83c102 6685c0 }
$sequence_5hex{ 8d85e8e7ffff 68???????? 50 ff15???????? 83c410 8d8594e7ffff 50 }
$sequence_6hex{ 0f1085b0fcffff 0f1100 8bc4 0f108590fcffff 51 0f1100 ff5228 }
$sequence_7hex{ 83c408 8b95dcfeffff 83fa10 722f 8b8dc8feffff 42 8bc1 }
$sequence_8hex{ 6a00 68???????? 6802000080 c785c8e7ffff3f000f00 ff15???????? 85c0 0f84ef000000 }
$sequence_9hex{ 8d45f4 64a300000000 8965f0 8b4510 8b4d18 8b5d0c }

Condition

7 of them and filesize < 626688

In plain words (Heuristic)

  • The file must be smaller than 626688 (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: 68f5ede2-e772-5b9c-86c7-72da7d6ddaff

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20230705
malpedia_hash42d0574f4405bd7d2b154d321d345acb18834a41
malpedia_version20230715
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE