YARA · Malpedia signator rules
MALPEDIA_Win_Swen_Auto
autogenerated rule brought to you by yara-signator
- 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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "643c94ee-d414-519f-856e-aab2365c3e39"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.swen"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.swen_auto.yar#L1-L131"
= "N/A"
= "df34358c4a02cbfeba9bbd82fdf44532ec7b5490727ac9260ef8022f3cf54ff4"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 81c6d0750000 56 ff15???????? ff35???????? ff15???????? 5e } | |
| $sequence_1 | hex | { 56 6a03 bf000000c0 57 68???????? 8d850cffffff 50 } | |
| $sequence_2 | hex | { 50 57 e8???????? 6a71 57 e8???????? be???????? } | |
| $sequence_3 | hex | { 894dcc 3bcb 0f8415ffffff 8bc1 2b45e4 8945e0 } | |
| $sequence_4 | hex | { 0f8452020000 6a04 8d85448affff 50 8bce e8???????? } | |
| $sequence_5 | hex | { 6a10 68???????? 50 6a00 ff15???????? 68b0040000 ff15???????? } | |
| $sequence_6 | hex | { 3bc6 7403 802000 57 e8???????? 59 8945e4 } | |
| $sequence_7 | hex | { 50 50 ff15???????? 898578ffffff 3bc3 740b 53 } | |
| $sequence_8 | hex | { 7415 6a21 6814040000 ff7510 ff36 e8???????? 3bc3 } | |
| $sequence_9 | hex | { 59 6a25 e8???????? 59 85c0 7407 68???????? } |
Condition
7 of them and filesize < 286720In 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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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)
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
| 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 |
Tags:FILE
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