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MALPEDIA_Win_Nemty_Auto

autogenerated rule brought to you by yara-signator

MalwareNemtyMalpedia 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: Nemty.

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

Summary generated from the rule's metadata and condition.

Rule source

win-nemty-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nemty_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b096c28c-62cf-5b76-9cea-a4a47cf581e2"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.nemty"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nemty_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "afb2d01d491036b9746dc0ecbfc2c482240d2255977e6e394f054f4c1a86a43a"
		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 = { 730e 8d4d24 eb09 80392b 7503 c6012e }
		$sequence_1 = { 7405 e8???????? 83c61c 897510 83c31c 895d08 }
		$sequence_2 = { a1???????? 33c5 8945fc 8d85f4fdffff 50 33c0 }
		$sequence_3 = { 85c0 7453 83ec1c 03cb }
		$sequence_4 = { 83c410 834dfcff 8b4304 8945e4 8b0b }
		$sequence_5 = { ff15???????? 53 8d459c 50 ff35???????? }
		$sequence_6 = { 8bc3 e8???????? eb23 ff759c }
		$sequence_7 = { 8db5b4fcffff e8???????? 53 8db57cfcffff }
		$sequence_8 = { 7507 be???????? eb2b 83f802 7507 be???????? eb1f }
		$sequence_9 = { 837d3810 8bf8 8b4524 59 7303 8d4524 837d3810 }

	condition:
		7 of them and filesize < 204800
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 730e 8d4d24 eb09 80392b 7503 c6012e }
$sequence_1hex{ 7405 e8???????? 83c61c 897510 83c31c 895d08 }
$sequence_2hex{ a1???????? 33c5 8945fc 8d85f4fdffff 50 33c0 }
$sequence_3hex{ 85c0 7453 83ec1c 03cb }
$sequence_4hex{ 83c410 834dfcff 8b4304 8945e4 8b0b }
$sequence_5hex{ ff15???????? 53 8d459c 50 ff35???????? }
$sequence_6hex{ 8bc3 e8???????? eb23 ff759c }
$sequence_7hex{ 8db5b4fcffff e8???????? 53 8db57cfcffff }
$sequence_8hex{ 7507 be???????? eb2b 83f802 7507 be???????? eb1f }
$sequence_9hex{ 837d3810 8bf8 8b4524 59 7303 8d4524 837d3810 }

Condition

7 of them and filesize < 204800

In plain words (Heuristic)

  • The file must be smaller than 204800 (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: b096c28c-62cf-5b76-9cea-a4a47cf581e2

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

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