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MALPEDIA_Win_Odinaff_Auto

autogenerated rule brought to you by yara-signator

MalwareOdinaffMalpedia 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: Odinaff.

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

Summary generated from the rule's metadata and condition.

Rule source

win-odinaff-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Odinaff_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "013682c3-e6bb-5919-97ad-6f041caae471"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.odinaff"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.odinaff_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "e27275d11293a489601def324d479cc53d79be6f10f10ea9506cadbab7cb2509"
		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 = { 3db7000000 7505 33c0 c21000 68???????? 68???????? }
		$sequence_1 = { f7de 85c0 7408 50 }
		$sequence_2 = { 56 c745983c000000 c745ac00010000 8955c4 c745c800080000 89459c }
		$sequence_3 = { 6a00 51 52 50 ff15???????? 8945e8 }
		$sequence_4 = { c745fc00010000 ff15???????? 50 ff15???????? 8bf8 8d45fc 50 }
		$sequence_5 = { b8???????? e8???????? 8b1d???????? 83c410 f7d8 1bf6 8b45e8 }
		$sequence_6 = { 53 56 57 8b3d???????? 6800001000 }
		$sequence_7 = { 6a08 33ff 57 57 ff15???????? 8bf0 85f6 }
		$sequence_8 = { 7408 48 7555 e8???????? }
		$sequence_9 = { ffd3 8b3d???????? 50 ffd7 6808020000 }

	condition:
		7 of them and filesize < 73728
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 3db7000000 7505 33c0 c21000 68???????? 68???????? }
$sequence_1hex{ f7de 85c0 7408 50 }
$sequence_2hex{ 56 c745983c000000 c745ac00010000 8955c4 c745c800080000 89459c }
$sequence_3hex{ 6a00 51 52 50 ff15???????? 8945e8 }
$sequence_4hex{ c745fc00010000 ff15???????? 50 ff15???????? 8bf8 8d45fc 50 }
$sequence_5hex{ b8???????? e8???????? 8b1d???????? 83c410 f7d8 1bf6 8b45e8 }
$sequence_6hex{ 53 56 57 8b3d???????? 6800001000 }
$sequence_7hex{ 6a08 33ff 57 57 ff15???????? 8bf0 85f6 }
$sequence_8hex{ 7408 48 7555 e8???????? }
$sequence_9hex{ ffd3 8b3d???????? 50 ffd7 6808020000 }

Condition

7 of them and filesize < 73728

In plain words (Heuristic)

  • The file must be smaller than 73728 (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: 013682c3-e6bb-5919-97ad-6f041caae471

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