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MALPEDIA_Win_Defray_Auto

autogenerated rule brought to you by yara-signator

MalwareDefrayMalpedia 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: Defray.

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

Summary generated from the rule's metadata and condition.

Rule source

win-defray-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Defray_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "91dbb208-60a5-5e96-a645-56c436179440"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.defray"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.defray_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "6b4e097237ff798ba5626d5bee417027ad739d6a04da88a35accdf2c8cd93643"
		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 = { 8d34ba 3bf0 741b 8bf8 2bf8 57 50 }
		$sequence_1 = { 8b4dec ba10000000 8b7df0 8d49ff d3e2 8bcb }
		$sequence_2 = { 8bf0 894dfc 2bf2 8d7b1f c1ef05 c1fe02 897d08 }
		$sequence_3 = { 85c0 7471 8b45f0 8b4de8 8b048568f34800 f644012880 745d }
		$sequence_4 = { 8bc2 8bca 83e03f c1f906 6bc030 03048d68f34800 eb05 }
		$sequence_5 = { ab ab ab 66ab 33c0 8dbd74faffff a5 }
		$sequence_6 = { 740b 50 ff15???????? 32c0 eb31 e8???????? 3bf0 }
		$sequence_7 = { 84c0 750f 8d8d98fbffff e8???????? 84c0 7430 8d8d68f9ffff }
		$sequence_8 = { c1ee02 8bfb 8bce 33c0 f3ab 8b75e8 33d2 }
		$sequence_9 = { eb07 c6437600 894304 8b8544ffffff 85c0 0f8482000000 }

	condition:
		7 of them and filesize < 1253376
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d34ba 3bf0 741b 8bf8 2bf8 57 50 }
$sequence_1hex{ 8b4dec ba10000000 8b7df0 8d49ff d3e2 8bcb }
$sequence_2hex{ 8bf0 894dfc 2bf2 8d7b1f c1ef05 c1fe02 897d08 }
$sequence_3hex{ 85c0 7471 8b45f0 8b4de8 8b048568f34800 f644012880 745d }
$sequence_4hex{ 8bc2 8bca 83e03f c1f906 6bc030 03048d68f34800 eb05 }
$sequence_5hex{ ab ab ab 66ab 33c0 8dbd74faffff a5 }
$sequence_6hex{ 740b 50 ff15???????? 32c0 eb31 e8???????? 3bf0 }
$sequence_7hex{ 84c0 750f 8d8d98fbffff e8???????? 84c0 7430 8d8d68f9ffff }
$sequence_8hex{ c1ee02 8bfb 8bce 33c0 f3ab 8b75e8 33d2 }
$sequence_9hex{ eb07 c6437600 894304 8b8544ffffff 85c0 0f8482000000 }

Condition

7 of them and filesize < 1253376

In plain words (Heuristic)

  • The file must be smaller than 1253376 (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: 91dbb208-60a5-5e96-a645-56c436179440

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