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MALPEDIA_Win_Proto8_Rat_Auto

autogenerated rule brought to you by yara-signator

MalwareProto8 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: Proto8 Rat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-proto8-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Proto8_Rat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "53ad6b80-a662-5c00-8508-91dc02f84545"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.proto8_rat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.proto8_rat_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "7c1b0a7b6ecd3ea43bc5cedec06f59d61d50c3231dd17057afc1bc9b44cd3d88"
		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 = { 84c0 7407 807c245000 743b 32c9 0fb6c1 488b5c2430 }
		$sequence_1 = { b8ffffffff eb1a 488b8424a8000000 488901 488b02 4c897008 488b02 }
		$sequence_2 = { e8???????? 90 837b3c00 7410 488b4310 488d4b28 ff5048 }
		$sequence_3 = { 85c0 745c e8???????? 4c8bc6 488b8e08010000 83f803 7c1a }
		$sequence_4 = { e8???????? 90 837de800 750a b901000000 e8???????? 0f2845e0 }
		$sequence_5 = { 84c0 0f85d6000000 8bdf 83e301 7434 0fb6442440 4d8bce }
		$sequence_6 = { 75a1 4585c9 7454 0f1f8000000000 4183f873 0f8452feffff 418bd0 }
		$sequence_7 = { 7513 b8ffffffff 8905???????? 33c0 881d???????? 488b5c2430 488b742438 }
		$sequence_8 = { 88442420 488bd3 498bcf e8???????? 84c0 7521 440fb68c2480000000 }
		$sequence_9 = { 0f1f00 33c9 410fb6c7 85f6 0f45c8 884c2478 440fb6f9 }

	condition:
		7 of them and filesize < 2537472
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 84c0 7407 807c245000 743b 32c9 0fb6c1 488b5c2430 }
$sequence_1hex{ b8ffffffff eb1a 488b8424a8000000 488901 488b02 4c897008 488b02 }
$sequence_2hex{ e8???????? 90 837b3c00 7410 488b4310 488d4b28 ff5048 }
$sequence_3hex{ 85c0 745c e8???????? 4c8bc6 488b8e08010000 83f803 7c1a }
$sequence_4hex{ e8???????? 90 837de800 750a b901000000 e8???????? 0f2845e0 }
$sequence_5hex{ 84c0 0f85d6000000 8bdf 83e301 7434 0fb6442440 4d8bce }
$sequence_6hex{ 75a1 4585c9 7454 0f1f8000000000 4183f873 0f8452feffff 418bd0 }
$sequence_7hex{ 7513 b8ffffffff 8905???????? 33c0 881d???????? 488b5c2430 488b742438 }
$sequence_8hex{ 88442420 488bd3 498bcf e8???????? 84c0 7521 440fb68c2480000000 }
$sequence_9hex{ 0f1f00 33c9 410fb6c7 85f6 0f45c8 884c2478 440fb6f9 }

Condition

7 of them and filesize < 2537472

In plain words (Heuristic)

  • The file must be smaller than 2537472 (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: 53ad6b80-a662-5c00-8508-91dc02f84545

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