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MALPEDIA_Win_Sneepy_Auto

autogenerated rule brought to you by yara-signator

MalwareSneepyMalpedia 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: Sneepy.

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

Summary generated from the rule's metadata and condition.

Rule source

win-sneepy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sneepy_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6b1a27cc-c83f-505c-9e9b-c13052965bfd"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sneepy"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sneepy_auto.yar#L1-L120"
		license_url = "N/A"
		logic_hash = "91a9e511dd68c0086fb3f601c9310c63778276b1ac215798e05435336d9866f2"
		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 = { 8bc1 c1f805 8bf1 83e61f 8d3c8560314100 8b07 c1e606 }
		$sequence_1 = { e8???????? 83c404 85c0 0f8527ffffff 6800020000 }
		$sequence_2 = { 83c404 68983a0000 ffd6 68???????? c705????????ccd44000 e8???????? 83c404 }
		$sequence_3 = { 668945f8 6a0a 8d45f0 50 57 c705????????00000000 ffd3 }
		$sequence_4 = { 8d95acfcffff 52 50 ffd7 a3???????? 83f8ff }
		$sequence_5 = { 85f6 7408 6aff 56 }
		$sequence_6 = { f3a4 8dbdacfeffff 4f 90 8a4701 }
		$sequence_7 = { 770f 0fbec2 0fbe8088df4000 83e00f eb02 }
		$sequence_8 = { a1???????? 6a00 6a07 68???????? }
		$sequence_9 = { 51 e8???????? 83c404 8bd0 8a08 40 }

	condition:
		7 of them and filesize < 188416
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8bc1 c1f805 8bf1 83e61f 8d3c8560314100 8b07 c1e606 }
$sequence_1hex{ e8???????? 83c404 85c0 0f8527ffffff 6800020000 }
$sequence_2hex{ 83c404 68983a0000 ffd6 68???????? c705????????ccd44000 e8???????? 83c404 }
$sequence_3hex{ 668945f8 6a0a 8d45f0 50 57 c705????????00000000 ffd3 }
$sequence_4hex{ 8d95acfcffff 52 50 ffd7 a3???????? 83f8ff }
$sequence_5hex{ 85f6 7408 6aff 56 }
$sequence_6hex{ f3a4 8dbdacfeffff 4f 90 8a4701 }
$sequence_7hex{ 770f 0fbec2 0fbe8088df4000 83e00f eb02 }
$sequence_8hex{ a1???????? 6a00 6a07 68???????? }
$sequence_9hex{ 51 e8???????? 83c404 8bd0 8a08 40 }

Condition

7 of them and filesize < 188416

In plain words (Heuristic)

  • The file must be smaller than 188416 (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: 6b1a27cc-c83f-505c-9e9b-c13052965bfd

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