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MALPEDIA_Win_Friedex_Auto

autogenerated rule brought to you by yara-signator

MalwareFriedexMalpedia 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: Friedex.

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

Summary generated from the rule's metadata and condition.

Rule source

win-friedex-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Friedex_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "d2b00e14-e6fa-5551-aeaf-2f0f4681123e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.friedex"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.friedex_auto.yar#L1-L177"
		license_url = "N/A"
		logic_hash = "2a1e410ded990de72d163ace024d3e6d9a680fcd432c565f5e3bbafe389a6806"
		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 = { eb16 0fb730 663bf7 7416 663bf2 7405 663bf3 }
		$sequence_1 = { c3 53 55 56 57 8bd9 bf00020000 }
		$sequence_2 = { 03cd 0fb711 6685d2 75c1 6a2a 5f }
		$sequence_3 = { 663910 7431 8bd8 8d7102 eb1d 32c0 eb39 }
		$sequence_4 = { 7408 8bce 8bc3 03f5 eb04 03c5 03cd }
		$sequence_5 = { eb1d 32c0 eb39 663bfa 7410 6a3f 5a }
		$sequence_6 = { 6a62 8bc8 e8???????? 57 8bc8 e8???????? 56 }
		$sequence_7 = { 6a2a 5f 6a3f 5b 6a02 }
		$sequence_8 = { 8d0dd830a500 890424 894c2404 e8???????? }
		$sequence_9 = { 83ec44 8b4508 8d0d3030a500 31d2 890c24 }
		$sequence_10 = { 890c24 c744240400000000 8955e8 e8???????? 8d0dbc30a500 }
		$sequence_11 = { 894c2404 e8???????? 8d0d4430a500 31d2 8b75f8 89461c 890c24 }
		$sequence_12 = { 891424 894c2404 8945f8 e8???????? 8d0d4430a500 31d2 890c24 }
		$sequence_13 = { c7424458270000 c7424800100100 8b7de4 c787cc00000000000000 c787c800000000000000 }
		$sequence_14 = { 8955e0 e8???????? 8d0dd830a500 890424 }
		$sequence_15 = { c744240400000000 8945f4 8955f0 e8???????? 8d0da030a500 }

	condition:
		7 of them and filesize < 204800
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ eb16 0fb730 663bf7 7416 663bf2 7405 663bf3 }
$sequence_1hex{ c3 53 55 56 57 8bd9 bf00020000 }
$sequence_2hex{ 03cd 0fb711 6685d2 75c1 6a2a 5f }
$sequence_3hex{ 663910 7431 8bd8 8d7102 eb1d 32c0 eb39 }
$sequence_4hex{ 7408 8bce 8bc3 03f5 eb04 03c5 03cd }
$sequence_5hex{ eb1d 32c0 eb39 663bfa 7410 6a3f 5a }
$sequence_6hex{ 6a62 8bc8 e8???????? 57 8bc8 e8???????? 56 }
$sequence_7hex{ 6a2a 5f 6a3f 5b 6a02 }
$sequence_8hex{ 8d0dd830a500 890424 894c2404 e8???????? }
$sequence_9hex{ 83ec44 8b4508 8d0d3030a500 31d2 890c24 }
$sequence_10hex{ 890c24 c744240400000000 8955e8 e8???????? 8d0dbc30a500 }
$sequence_11hex{ 894c2404 e8???????? 8d0d4430a500 31d2 8b75f8 89461c 890c24 }
$sequence_12hex{ 891424 894c2404 8945f8 e8???????? 8d0d4430a500 31d2 890c24 }
$sequence_13hex{ c7424458270000 c7424800100100 8b7de4 c787cc00000000000000 c787c800000000000000 }
$sequence_14hex{ 8955e0 e8???????? 8d0dd830a500 890424 }
$sequence_15hex{ c744240400000000 8945f4 8955f0 e8???????? 8d0da030a500 }

Condition

7 of them and filesize < 204800

In plain words (Heuristic)

  • The file must be smaller than 204800 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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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: d2b00e14-e6fa-5551-aeaf-2f0f4681123e

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