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MALPEDIA_Win_Waterspout_Auto

autogenerated rule brought to you by yara-signator

MalwareWaterspoutMalpedia 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: Waterspout.

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

Summary generated from the rule's metadata and condition.

Rule source

win-waterspout-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Waterspout_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "a79b4efb-da39-5f20-bd9b-fe533bfadaa3"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.waterspout"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.waterspout_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "5954a59154eda57d5dc5c820e0686ecc0875a821c4ee0c4304b80ad4914b4bc7"
		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 = { c6842491000000ff c6842492000000f3 c6842493000000d2 c6842494000000cd c68424950000000c c684249600000013 }
		$sequence_1 = { 885c2412 885c2413 be???????? bf08000000 bd34000000 8b46fc }
		$sequence_2 = { ff15???????? 8bb4246c200000 3bc5 8906 751c a1???????? }
		$sequence_3 = { 81fe00040000 77bf 8b442420 8b4c241c 8b542414 6a02 03f8 }
		$sequence_4 = { be04000000 8a18 83c004 8819 41 4e }
		$sequence_5 = { f3ab 8b420c 8b08 8b11 52 e8???????? 8bf8 }
		$sequence_6 = { 33c0 be???????? f2ae 8b44240c f7d1 49 8db882000000 }
		$sequence_7 = { 50 8d85fcfeffff 58 50 }
		$sequence_8 = { 89442428 c1f808 88442413 8b02 2b44241c 83f801 7706 }
		$sequence_9 = { 33c0 56 89442409 57 89442411 }

	condition:
		7 of them and filesize < 98304
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c6842491000000ff c6842492000000f3 c6842493000000d2 c6842494000000cd c68424950000000c c684249600000013 }
$sequence_1hex{ 885c2412 885c2413 be???????? bf08000000 bd34000000 8b46fc }
$sequence_2hex{ ff15???????? 8bb4246c200000 3bc5 8906 751c a1???????? }
$sequence_3hex{ 81fe00040000 77bf 8b442420 8b4c241c 8b542414 6a02 03f8 }
$sequence_4hex{ be04000000 8a18 83c004 8819 41 4e }
$sequence_5hex{ f3ab 8b420c 8b08 8b11 52 e8???????? 8bf8 }
$sequence_6hex{ 33c0 be???????? f2ae 8b44240c f7d1 49 8db882000000 }
$sequence_7hex{ 50 8d85fcfeffff 58 50 }
$sequence_8hex{ 89442428 c1f808 88442413 8b02 2b44241c 83f801 7706 }
$sequence_9hex{ 33c0 56 89442409 57 89442411 }

Condition

7 of them and filesize < 98304

In plain words (Heuristic)

  • The file must be smaller than 98304 (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: a79b4efb-da39-5f20-bd9b-fe533bfadaa3

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