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MALPEDIA_Win_Rifdoor_Auto

autogenerated rule brought to you by yara-signator

MalwareRifdoorMalpedia 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: Rifdoor.

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

Summary generated from the rule's metadata and condition.

Rule source

win-rifdoor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Rifdoor_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "a31f7bd0-1ed0-5fd9-873c-451f99775a1c"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.rifdoor"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.rifdoor_auto.yar#L1-L174"
		license_url = "N/A"
		logic_hash = "b71b1ed569a75b60e54eb60641d1720e666f05f6f32fa3269807a7fb2d81288b"
		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 = { 57 ffd6 8d4c2410 a3???????? 51 b810000000 }
		$sequence_1 = { ff15???????? 5f b001 5e 81c408010000 }
		$sequence_2 = { e8???????? 8b4de4 83c40c 6bc930 8975e0 8db1304b4100 }
		$sequence_3 = { 02c9 02c9 880c30 eb26 }
		$sequence_4 = { 85d2 7e6d 83f93d 7468 83f920 }
		$sequence_5 = { 52 b808000000 b9???????? 895c2414 e8???????? 8be8 }
		$sequence_6 = { e8???????? 83c410 6a00 8d84240c010000 50 ff15???????? 6a00 }
		$sequence_7 = { c3 397c240c 74e1 ba4f000000 8bc2 }
		$sequence_8 = { 52 8d45e8 50 8d8de8f7ffff }
		$sequence_9 = { b9843a0000 81fb843a0000 7702 8bcb 2bd9 be2c1a0000 33ff }
		$sequence_10 = { eb08 ff15???????? 33c9 b873b2e745 f72d???????? }
		$sequence_11 = { 83c103 51 ffd3 a3???????? eb2c 8b14b7 83c203 }
		$sequence_12 = { 83c40c 8d8d68fcffff 51 8d9574fcffff 52 6a00 }
		$sequence_13 = { 68ff000000 e8???????? 59 59 8b7508 8d34f5000d4100 391e }
		$sequence_14 = { ff15???????? 8bf8 83ffff 0f84bb000000 53 }
		$sequence_15 = { c785e4bcffff44000000 899d1cbdffff c78510bdffff01010000 66898514bdffff 33f6 8d642400 8d8d40bdffff }

	condition:
		7 of them and filesize < 212992
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 57 ffd6 8d4c2410 a3???????? 51 b810000000 }
$sequence_1hex{ ff15???????? 5f b001 5e 81c408010000 }
$sequence_2hex{ e8???????? 8b4de4 83c40c 6bc930 8975e0 8db1304b4100 }
$sequence_3hex{ 02c9 02c9 880c30 eb26 }
$sequence_4hex{ 85d2 7e6d 83f93d 7468 83f920 }
$sequence_5hex{ 52 b808000000 b9???????? 895c2414 e8???????? 8be8 }
$sequence_6hex{ e8???????? 83c410 6a00 8d84240c010000 50 ff15???????? 6a00 }
$sequence_7hex{ c3 397c240c 74e1 ba4f000000 8bc2 }
$sequence_8hex{ 52 8d45e8 50 8d8de8f7ffff }
$sequence_9hex{ b9843a0000 81fb843a0000 7702 8bcb 2bd9 be2c1a0000 33ff }
$sequence_10hex{ eb08 ff15???????? 33c9 b873b2e745 f72d???????? }
$sequence_11hex{ 83c103 51 ffd3 a3???????? eb2c 8b14b7 83c203 }
$sequence_12hex{ 83c40c 8d8d68fcffff 51 8d9574fcffff 52 6a00 }
$sequence_13hex{ 68ff000000 e8???????? 59 59 8b7508 8d34f5000d4100 391e }
$sequence_14hex{ ff15???????? 8bf8 83ffff 0f84bb000000 53 }
$sequence_15hex{ c785e4bcffff44000000 899d1cbdffff c78510bdffff01010000 66898514bdffff 33f6 8d642400 8d8d40bdffff }

Condition

7 of them and filesize < 212992

In plain words (Heuristic)

  • The file must be smaller than 212992 (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: a31f7bd0-1ed0-5fd9-873c-451f99775a1c

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