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MALPEDIA_Win_Swen_Auto

autogenerated rule brought to you by yara-signator

MalwareSwenMalpedia 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: Swen.

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

Summary generated from the rule's metadata and condition.

Rule source

win-swen-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Swen_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "643c94ee-d414-519f-856e-aab2365c3e39"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.swen"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.swen_auto.yar#L1-L131"
		license_url = "N/A"
		logic_hash = "df34358c4a02cbfeba9bbd82fdf44532ec7b5490727ac9260ef8022f3cf54ff4"
		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 = { 81c6d0750000 56 ff15???????? ff35???????? ff15???????? 5e }
		$sequence_1 = { 56 6a03 bf000000c0 57 68???????? 8d850cffffff 50 }
		$sequence_2 = { 50 57 e8???????? 6a71 57 e8???????? be???????? }
		$sequence_3 = { 894dcc 3bcb 0f8415ffffff 8bc1 2b45e4 8945e0 }
		$sequence_4 = { 0f8452020000 6a04 8d85448affff 50 8bce e8???????? }
		$sequence_5 = { 6a10 68???????? 50 6a00 ff15???????? 68b0040000 ff15???????? }
		$sequence_6 = { 3bc6 7403 802000 57 e8???????? 59 8945e4 }
		$sequence_7 = { 50 50 ff15???????? 898578ffffff 3bc3 740b 53 }
		$sequence_8 = { 7415 6a21 6814040000 ff7510 ff36 e8???????? 3bc3 }
		$sequence_9 = { 59 6a25 e8???????? 59 85c0 7407 68???????? }

	condition:
		7 of them and filesize < 286720
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 81c6d0750000 56 ff15???????? ff35???????? ff15???????? 5e }
$sequence_1hex{ 56 6a03 bf000000c0 57 68???????? 8d850cffffff 50 }
$sequence_2hex{ 50 57 e8???????? 6a71 57 e8???????? be???????? }
$sequence_3hex{ 894dcc 3bcb 0f8415ffffff 8bc1 2b45e4 8945e0 }
$sequence_4hex{ 0f8452020000 6a04 8d85448affff 50 8bce e8???????? }
$sequence_5hex{ 6a10 68???????? 50 6a00 ff15???????? 68b0040000 ff15???????? }
$sequence_6hex{ 3bc6 7403 802000 57 e8???????? 59 8945e4 }
$sequence_7hex{ 50 50 ff15???????? 898578ffffff 3bc3 740b 53 }
$sequence_8hex{ 7415 6a21 6814040000 ff7510 ff36 e8???????? 3bc3 }
$sequence_9hex{ 59 6a25 e8???????? 59 85c0 7407 68???????? }

Condition

7 of them and filesize < 286720

In plain words (Heuristic)

  • The file must be smaller than 286720 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: 643c94ee-d414-519f-856e-aab2365c3e39

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