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MALPEDIA_Win_Newpass_Auto

autogenerated rule brought to you by yara-signator

MalwareNewpassMalpedia 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: Newpass.

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

Summary generated from the rule's metadata and condition.

Rule source

win-newpass-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Newpass_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "47e0f7a6-576f-55a2-9137-441eab6be471"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.newpass"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.newpass_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "d06c223e085210a8c1f4811e1dc01e77d08da433457f2862fcb60a549ddda3f8"
		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 = { 4833c4 4889442458 418be9 498bf8 488bda 488bf1 4889542448 }
		$sequence_1 = { 80781900 7521 4c8bc8 488b00 80781900 7535 0f1f8000000000 }
		$sequence_2 = { 57 4883ec30 498bd9 498bf8 488be9 }
		$sequence_3 = { 408829 41ff4608 eba3 80fa75 0f857d010000 33d2 4533c9 }
		$sequence_4 = { 49837f1810 7205 4d8b07 eb03 4d8bc7 498d5101 488bc8 }
		$sequence_5 = { 4d8d4001 32c1 ffc1 3471 418840ff }
		$sequence_6 = { 720a 488b4c2470 e8???????? 48c78424880000000f000000 4889b42480000000 c644247000 48837c246810 }
		$sequence_7 = { 83f90e 72e9 0fb605???????? 448805???????? 48c74424380f000000 4c89442430 4488442420 }
		$sequence_8 = { 488bcf e8???????? 3c01 7409 33c9 ff15???????? }
		$sequence_9 = { cc 488d7c2438 33c0 b908000000 f3aa b001 488b4c2468 }

	condition:
		7 of them and filesize < 2654208
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 4833c4 4889442458 418be9 498bf8 488bda 488bf1 4889542448 }
$sequence_1hex{ 80781900 7521 4c8bc8 488b00 80781900 7535 0f1f8000000000 }
$sequence_2hex{ 57 4883ec30 498bd9 498bf8 488be9 }
$sequence_3hex{ 408829 41ff4608 eba3 80fa75 0f857d010000 33d2 4533c9 }
$sequence_4hex{ 49837f1810 7205 4d8b07 eb03 4d8bc7 498d5101 488bc8 }
$sequence_5hex{ 4d8d4001 32c1 ffc1 3471 418840ff }
$sequence_6hex{ 720a 488b4c2470 e8???????? 48c78424880000000f000000 4889b42480000000 c644247000 48837c246810 }
$sequence_7hex{ 83f90e 72e9 0fb605???????? 448805???????? 48c74424380f000000 4c89442430 4488442420 }
$sequence_8hex{ 488bcf e8???????? 3c01 7409 33c9 ff15???????? }
$sequence_9hex{ cc 488d7c2438 33c0 b908000000 f3aa b001 488b4c2468 }

Condition

7 of them and filesize < 2654208

In plain words (Heuristic)

  • The file must be smaller than 2654208 (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: 47e0f7a6-576f-55a2-9137-441eab6be471

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