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MALPEDIA_Win_Collection_Rat_Auto

autogenerated rule brought to you by yara-signator

MalwareCollection RatMalpedia 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: Collection Rat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-collection-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Collection_Rat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "3a95bb6f-1973-5327-bcff-7f611fa8bd27"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.collection_rat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.collection_rat_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "d6d9696aaec03ca27d8f9c1fa7ae17c4465b1b2f11b092959d6ff31d64c8bbee"
		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 = { 4c8d05d12b0200 ba00100000 e8???????? b90a000000 }
		$sequence_1 = { 488d4c2420 448bc5 33d2 e8???????? 448bc5 488d8c2430010000 33d2 }
		$sequence_2 = { 7431 4885c0 742c 4d85c9 7427 4d8bc1 488d4c2420 }
		$sequence_3 = { 8bda e8???????? 84c0 757d 4c8d0550820100 418bd7 488bcd }
		$sequence_4 = { 48898620020000 0fb7c0 66f3ab 488d3df04f0100 482bfe }
		$sequence_5 = { 0f84f5000000 4183e801 0f84d2000000 4183e801 0f84af000000 4183e801 0f848c000000 }
		$sequence_6 = { 0f8469030000 498b8e90000000 488b4918 e8???????? 8bf8 8d5678 498b8690000000 }
		$sequence_7 = { 0f84b1010000 448bc2 488bd1 488d4c2468 e8???????? 90 8d5f68 }
		$sequence_8 = { 66c7451c0005 895d10 895d18 48895d20 8d5357 8d4b01 448d4351 }
		$sequence_9 = { 4889442420 4d8b4908 488b4910 e8???????? 488b0d???????? 488b5108 488b4a30 }

	condition:
		7 of them and filesize < 397312
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 4c8d05d12b0200 ba00100000 e8???????? b90a000000 }
$sequence_1hex{ 488d4c2420 448bc5 33d2 e8???????? 448bc5 488d8c2430010000 33d2 }
$sequence_2hex{ 7431 4885c0 742c 4d85c9 7427 4d8bc1 488d4c2420 }
$sequence_3hex{ 8bda e8???????? 84c0 757d 4c8d0550820100 418bd7 488bcd }
$sequence_4hex{ 48898620020000 0fb7c0 66f3ab 488d3df04f0100 482bfe }
$sequence_5hex{ 0f84f5000000 4183e801 0f84d2000000 4183e801 0f84af000000 4183e801 0f848c000000 }
$sequence_6hex{ 0f8469030000 498b8e90000000 488b4918 e8???????? 8bf8 8d5678 498b8690000000 }
$sequence_7hex{ 0f84b1010000 448bc2 488bd1 488d4c2468 e8???????? 90 8d5f68 }
$sequence_8hex{ 66c7451c0005 895d10 895d18 48895d20 8d5357 8d4b01 448d4351 }
$sequence_9hex{ 4889442420 4d8b4908 488b4910 e8???????? 488b0d???????? 488b5108 488b4a30 }

Condition

7 of them and filesize < 397312

In plain words (Heuristic)

  • The file must be smaller than 397312 (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: 3a95bb6f-1973-5327-bcff-7f611fa8bd27

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