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MALPEDIA_Win_Doublefantasy_Auto

autogenerated rule brought to you by yara-signator

MalwareDoublefantasyMalpedia 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: Doublefantasy.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-doublefantasy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Doublefantasy_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6effc5c9-0006-5ed7-b805-b3d9b614f224"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.doublefantasy"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.doublefantasy_auto.yar#L1-L178"
		license_url = "N/A"
		logic_hash = "e51e60993fcda8ab09ee32d5deecfc0fd82ef9804363aa3f286e47f2d848dfa5"
		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 = { 56 e8???????? 8945e4 3bc6 7c49 8b07 }
		$sequence_1 = { ff15???????? 83f8ff 751c 397514 7409 ff7514 }
		$sequence_2 = { c6430174 8b4508 668b4002 668945dc 3935???????? 7421 }
		$sequence_3 = { 6805010000 57 68???????? e8???????? }
		$sequence_4 = { 393d???????? 7523 3d52000028 741c 3d54000028 750c }
		$sequence_5 = { 8a91908c2700 8b4c2408 8811 33d2 8a10 56 }
		$sequence_6 = { 3d09000c80 7451 3bc3 7c59 6aff ff35???????? }
		$sequence_7 = { 5e 7e0f 0fb64002 83e03f 8a80908c2700 eb02 }
		$sequence_8 = { c1e204 0bd6 837c241001 8a92908c2700 885101 7e1c }
		$sequence_9 = { e8???????? 8b4605 c68094a3270000 ff35???????? ff35???????? e8???????? 83c414 }
		$sequence_10 = { 43 895de0 33ff 897de4 897dd4 897dd8 897dfc }
		$sequence_11 = { 0fb608 c1e902 8a91908c2700 8b4c2408 }
		$sequence_12 = { 8a92908c2700 885101 7e1c 0fb67002 33d2 8a5001 c1ee06 }
		$sequence_13 = { e8???????? 3bc7 8945e8 7d42 8b4628 3bc7 7414 }
		$sequence_14 = { 720f 3c7a 770b 0fb6c0 8a80ad8c2700 eb02 }
		$sequence_15 = { 0fb6c0 8a80ad8c2700 eb02 32c0 84c0 7410 }

	condition:
		7 of them and filesize < 172032
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 56 e8???????? 8945e4 3bc6 7c49 8b07 }
$sequence_1hex{ ff15???????? 83f8ff 751c 397514 7409 ff7514 }
$sequence_2hex{ c6430174 8b4508 668b4002 668945dc 3935???????? 7421 }
$sequence_3hex{ 6805010000 57 68???????? e8???????? }
$sequence_4hex{ 393d???????? 7523 3d52000028 741c 3d54000028 750c }
$sequence_5hex{ 8a91908c2700 8b4c2408 8811 33d2 8a10 56 }
$sequence_6hex{ 3d09000c80 7451 3bc3 7c59 6aff ff35???????? }
$sequence_7hex{ 5e 7e0f 0fb64002 83e03f 8a80908c2700 eb02 }
$sequence_8hex{ c1e204 0bd6 837c241001 8a92908c2700 885101 7e1c }
$sequence_9hex{ e8???????? 8b4605 c68094a3270000 ff35???????? ff35???????? e8???????? 83c414 }
$sequence_10hex{ 43 895de0 33ff 897de4 897dd4 897dd8 897dfc }
$sequence_11hex{ 0fb608 c1e902 8a91908c2700 8b4c2408 }
$sequence_12hex{ 8a92908c2700 885101 7e1c 0fb67002 33d2 8a5001 c1ee06 }
$sequence_13hex{ e8???????? 3bc7 8945e8 7d42 8b4628 3bc7 7414 }
$sequence_14hex{ 720f 3c7a 770b 0fb6c0 8a80ad8c2700 eb02 }
$sequence_15hex{ 0fb6c0 8a80ad8c2700 eb02 32c0 84c0 7410 }

Condition

7 of them and filesize < 172032

In plain words (Heuristic)

  • The file must be smaller than 172032 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: 6effc5c9-0006-5ed7-b805-b3d9b614f224

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