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MALPEDIA_Win_New_Ct_Auto

autogenerated rule brought to you by yara-signator

MalwareNew CtMalpedia 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: New Ct.

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

Summary generated from the rule's metadata and condition.

Rule source

win-new-ct-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_New_Ct_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "88f07530-97d0-5f7a-b346-d7d071307942"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.new_ct"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.new_ct_auto.yar#L1-L123"
		license_url = "N/A"
		logic_hash = "3492ecd8e5da3fc8983fe7c0434cdd459b4e24bb77a5e66e6ae4cc8a816fdc7f"
		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 = { e8???????? 8dbc2470020000 83c9ff 33c0 f2ae f7d1 }
		$sequence_1 = { c684245801000000 f3ab 66ab aa b97f000000 33c0 8dbc2459010000 }
		$sequence_2 = { 52 ff15???????? 8985c4fbffff 83f8ff }
		$sequence_3 = { 89b5e4efffff 899de8efffff 8b520c 85d2 740f }
		$sequence_4 = { 8b02 8b08 894c2414 ff15???????? 668944240e 8b4604 }
		$sequence_5 = { 85db 7507 bf???????? eb1b 83fb01 }
		$sequence_6 = { 5b 81c40c060000 c20c00 8bbc2420060000 83c9ff }
		$sequence_7 = { 89742420 f2ae f7d1 8d442430 49 50 89742430 }
		$sequence_8 = { 50 6a00 6a00 68???????? 6a00 68???????? ff15???????? }
		$sequence_9 = { 5b 81c4680f0000 c21400 8b4c2410 8d1409 899684030000 eb11 }

	condition:
		7 of them and filesize < 122880
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? 8dbc2470020000 83c9ff 33c0 f2ae f7d1 }
$sequence_1hex{ c684245801000000 f3ab 66ab aa b97f000000 33c0 8dbc2459010000 }
$sequence_2hex{ 52 ff15???????? 8985c4fbffff 83f8ff }
$sequence_3hex{ 89b5e4efffff 899de8efffff 8b520c 85d2 740f }
$sequence_4hex{ 8b02 8b08 894c2414 ff15???????? 668944240e 8b4604 }
$sequence_5hex{ 85db 7507 bf???????? eb1b 83fb01 }
$sequence_6hex{ 5b 81c40c060000 c20c00 8bbc2420060000 83c9ff }
$sequence_7hex{ 89742420 f2ae f7d1 8d442430 49 50 89742430 }
$sequence_8hex{ 50 6a00 6a00 68???????? 6a00 68???????? ff15???????? }
$sequence_9hex{ 5b 81c4680f0000 c21400 8b4c2410 8d1409 899684030000 eb11 }

Condition

7 of them and filesize < 122880

In plain words (Heuristic)

  • The file must be smaller than 122880 (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: 88f07530-97d0-5f7a-b346-d7d071307942

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