Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_C0D0So0_Auto

autogenerated rule brought to you by yara-signator

MalwareC0D0So0Malpedia 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: C0D0So0.

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

Summary generated from the rule's metadata and condition.

Rule source

win-c0d0so0-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_C0D0So0_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "4d5f14be-55bb-5899-b6ef-5d7393399909"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.c0d0so0"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.c0d0so0_auto.yar#L1-L123"
		license_url = "N/A"
		logic_hash = "0f4e979cbe3d76aff927aa6e7e1b3d6c448a2b5066b0887f652f80cce15e3c72"
		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 = { 50 ff15???????? 8945fc 8d4df8 83c012 51 }
		$sequence_1 = { ffb56cfdffff 8b35???????? 6a00 ffd6 50 }
		$sequence_2 = { 8a4902 ebf2 8a4901 ebed 8a4902 }
		$sequence_3 = { 50 ff15???????? 85c0 0f8435ffffff eb04 }
		$sequence_4 = { 0f8399000000 53 56 57 8d5924 8b13 8bca }
		$sequence_5 = { 7503 50 eb44 8d856cfdffff 50 53 ff9568fdffff }
		$sequence_6 = { 7511 8d45f0 50 ff75f0 56 ff75f8 }
		$sequence_7 = { c3 2b05???????? 56 57 33ff ba???????? 8b32 }
		$sequence_8 = { ff9568fdffff 85c0 7531 8bc3 8b8894010000 }
		$sequence_9 = { 56 e8???????? eb1d 8a4902 ebf2 8a4901 }

	condition:
		7 of them and filesize < 450560
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 50 ff15???????? 8945fc 8d4df8 83c012 51 }
$sequence_1hex{ ffb56cfdffff 8b35???????? 6a00 ffd6 50 }
$sequence_2hex{ 8a4902 ebf2 8a4901 ebed 8a4902 }
$sequence_3hex{ 50 ff15???????? 85c0 0f8435ffffff eb04 }
$sequence_4hex{ 0f8399000000 53 56 57 8d5924 8b13 8bca }
$sequence_5hex{ 7503 50 eb44 8d856cfdffff 50 53 ff9568fdffff }
$sequence_6hex{ 7511 8d45f0 50 ff75f0 56 ff75f8 }
$sequence_7hex{ c3 2b05???????? 56 57 33ff ba???????? 8b32 }
$sequence_8hex{ ff9568fdffff 85c0 7531 8bc3 8b8894010000 }
$sequence_9hex{ 56 e8???????? eb1d 8a4902 ebf2 8a4901 }

Condition

7 of them and filesize < 450560

In plain words (Heuristic)

  • The file must be smaller than 450560 (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: 4d5f14be-55bb-5899-b6ef-5d7393399909

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