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MALPEDIA_Win_Netspy_Auto

autogenerated rule brought to you by yara-signator

MalwareNetspyMalpedia 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: Netspy.

It defines 8 patterns (0 text, 8 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-netspy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Netspy_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "45bc7385-75c7-5d89-95c7-73989dd86c33"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.netspy"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.netspy_auto.yar#L1-L107"
		license_url = "N/A"
		logic_hash = "e687b6fb39407430e86395d82e59b3f1e5f278922975f34f3274680e74dacd15"
		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 = { e9???????? 488b85584c0000 8b10 488b85404c0000 8b08 }
		$sequence_1 = { a801 0f8533000000 b810000000 e8???????? 4829c4 488b8508010000 4889e1 }
		$sequence_2 = { 0f8505000000 e9???????? 8b85a0430000 8985b4140000 3da51c0a0c 0f8c64000000 8b85b4140000 }
		$sequence_3 = { 8908 e9???????? 488b8530530000 0fbe00 89c1 83e120 83f020 }
		$sequence_4 = { 3deafd16e5 0f846c250000 e9???????? 8b85340b0000 }
		$sequence_5 = { 4829c4 488b85980c0000 4889e1 48898d20660000 488b8d20660000 c70163382994 e8???????? }
		$sequence_6 = { 488b8518440000 488985703f0000 8b15???????? 833d????????0a 0f9cc0 89d1 81c1096040c4 }
		$sequence_7 = { 488b8530150000 8908 e9???????? 488b8530150000 8b10 }

	condition:
		7 of them and filesize < 12033024
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e9???????? 488b85584c0000 8b10 488b85404c0000 8b08 }
$sequence_1hex{ a801 0f8533000000 b810000000 e8???????? 4829c4 488b8508010000 4889e1 }
$sequence_2hex{ 0f8505000000 e9???????? 8b85a0430000 8985b4140000 3da51c0a0c 0f8c64000000 8b85b4140000 }
$sequence_3hex{ 8908 e9???????? 488b8530530000 0fbe00 89c1 83e120 83f020 }
$sequence_4hex{ 3deafd16e5 0f846c250000 e9???????? 8b85340b0000 }
$sequence_5hex{ 4829c4 488b85980c0000 4889e1 48898d20660000 488b8d20660000 c70163382994 e8???????? }
$sequence_6hex{ 488b8518440000 488985703f0000 8b15???????? 833d????????0a 0f9cc0 89d1 81c1096040c4 }
$sequence_7hex{ 488b8530150000 8908 e9???????? 488b8530150000 8b10 }

Condition

7 of them and filesize < 12033024

In plain words (Heuristic)

  • The file must be smaller than 12033024 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: 45bc7385-75c7-5d89-95c7-73989dd86c33

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