YARA · Malpedia signator rules
MALPEDIA_Win_Stormwind_Auto
autogenerated rule brought to you by yara-signator
MalwareStormwindMalpedia 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: Stormwind.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-stormwind-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Stormwind_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a8201349-f1b3-5f54-a633-be4c25ea5016"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.stormwind"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.stormwind_auto.yar#L1-L121"
= "N/A"
= "e0acea9cdfedc7d121604bc91ea573c499c2b2be2e578cb618248ba1668e32f9"
= 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 = { 85f6 0f849b010000 8b5e14 85db 0f8890010000 8b7e10 85ff }
$sequence_1 = { 3bc8 1bc0 23c1 83c008 5d c3 8b04c524e60410 }
$sequence_2 = { 0fb606 0fbe80c0f10410 85c0 7510 e8???????? c7002a000000 e9???????? }
$sequence_3 = { 68???????? ff15???????? 68???????? 8d442418 6804010000 }
$sequence_4 = { 8b4804 8b30 894dfc 50 }
$sequence_5 = { 8d8f80000000 c745fc00000000 e8???????? 8bf0 }
$sequence_6 = { 89542420 83faff 0f8462010000 8d9b00000000 8b5c2438 83c9ff }
$sequence_7 = { 8d45f8 c745f8???????? 50 8d4de0 e8???????? c745e04c0c0410 8d45e0 }
$sequence_8 = { 8bf9 897df0 83ec08 c70700000000 c7470400000000 8d8f80000000 }
$sequence_9 = { 50 e8???????? f6c102 7474 }
condition:
7 of them and filesize < 741376
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 85f6 0f849b010000 8b5e14 85db 0f8890010000 8b7e10 85ff } | |
| $sequence_1 | hex | { 3bc8 1bc0 23c1 83c008 5d c3 8b04c524e60410 } | |
| $sequence_2 | hex | { 0fb606 0fbe80c0f10410 85c0 7510 e8???????? c7002a000000 e9???????? } | |
| $sequence_3 | hex | { 68???????? ff15???????? 68???????? 8d442418 6804010000 } | |
| $sequence_4 | hex | { 8b4804 8b30 894dfc 50 } | |
| $sequence_5 | hex | { 8d8f80000000 c745fc00000000 e8???????? 8bf0 } | |
| $sequence_6 | hex | { 89542420 83faff 0f8462010000 8d9b00000000 8b5c2438 83c9ff } | |
| $sequence_7 | hex | { 8d45f8 c745f8???????? 50 8d4de0 e8???????? c745e04c0c0410 8d45e0 } | |
| $sequence_8 | hex | { 8bf9 897df0 83ec08 c70700000000 c7470400000000 8d8f80000000 } | |
| $sequence_9 | hex | { 50 e8???????? f6c102 7474 } |
Condition
7 of them and filesize < 741376In plain words (Heuristic)
- The file must be smaller than 741376 (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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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: a8201349-f1b3-5f54-a633-be4c25ea5016
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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