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MALPEDIA_Win_Synflooder_Auto

autogenerated rule brought to you by yara-signator

MalwareSynflooderMalpedia 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: Synflooder.

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

Summary generated from the rule's metadata and condition.

Rule source

win-synflooder-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Synflooder_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "efa068ab-80ee-5171-9690-564cfdb6f68c"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.synflooder"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.synflooder_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "4a8a1c9ae0a778696e25fa4570a1688ba1f6ebca583f2f70ec6f184bb580f357"
		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 = { 51 ff15???????? 89470c c7471800000000 e8???????? 99 }
		$sequence_1 = { 7229 f3a5 ff2495e07a4000 8bc7 ba03000000 83e904 }
		$sequence_2 = { 50 e8???????? 8b4de4 83c40c 6bc930 8975e0 8db130ea4000 }
		$sequence_3 = { ff15???????? 89470c c7471800000000 e8???????? 99 b9e8fd0000 f7f9 }
		$sequence_4 = { a3???????? 8d7901 8a11 41 84d2 }
		$sequence_5 = { 8bff 56 57 33ff ffb7b0e54000 ff15???????? 8987b0e54000 }
		$sequence_6 = { 83c404 eb17 bb00040000 c744241800280000 }
		$sequence_7 = { e8???????? 85c0 0f8517010000 ff15???????? 50 e8???????? }
		$sequence_8 = { 52 0fb6d4 52 0fb6c0 }
		$sequence_9 = { 81ecf4010000 a1???????? 33c4 898424f0010000 53 56 }

	condition:
		7 of them and filesize < 163840
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 51 ff15???????? 89470c c7471800000000 e8???????? 99 }
$sequence_1hex{ 7229 f3a5 ff2495e07a4000 8bc7 ba03000000 83e904 }
$sequence_2hex{ 50 e8???????? 8b4de4 83c40c 6bc930 8975e0 8db130ea4000 }
$sequence_3hex{ ff15???????? 89470c c7471800000000 e8???????? 99 b9e8fd0000 f7f9 }
$sequence_4hex{ a3???????? 8d7901 8a11 41 84d2 }
$sequence_5hex{ 8bff 56 57 33ff ffb7b0e54000 ff15???????? 8987b0e54000 }
$sequence_6hex{ 83c404 eb17 bb00040000 c744241800280000 }
$sequence_7hex{ e8???????? 85c0 0f8517010000 ff15???????? 50 e8???????? }
$sequence_8hex{ 52 0fb6d4 52 0fb6c0 }
$sequence_9hex{ 81ecf4010000 a1???????? 33c4 898424f0010000 53 56 }

Condition

7 of them and filesize < 163840

In plain words (Heuristic)

  • The file must be smaller than 163840 (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: efa068ab-80ee-5171-9690-564cfdb6f68c

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