YARA · Malpedia signator rules
MALPEDIA_Win_Ironwind_Auto
autogenerated rule brought to you by yara-signator
MalwareIronwindMalpedia 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: Ironwind.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ironwind-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ironwind_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "8199e491-beed-5ae7-9c1e-27bfeb8315e8"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ironwind"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ironwind_auto.yar#L1-L132"
= "N/A"
= "15baeefb1cc07db45d74179ef27970b79e64b5e3c134c8a42e2e1a1cd3935c81"
= 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 = { b81b000000 e9???????? 488987a8020000 e9???????? 488b8fa8020000 e8???????? 488b87e0000000 }
$sequence_1 = { 488d0d66790100 e8???????? 488b442438 488905???????? 488d442438 4883c008 488905???????? }
$sequence_2 = { 48896c2420 57 4154 4157 4883ec30 4d63f8 4d8be1 }
$sequence_3 = { 4803f1 0f84a9010000 4c8bcf 488d1525330300 4d8bc4 488bcd e8???????? }
$sequence_4 = { 896c2420 4c8d05928c0300 498bd6 488bcb e8???????? ff15???????? 3930 }
$sequence_5 = { e8???????? 83f801 0f8596000000 448d482d 4c8d442430 488d542420 8d4816 }
$sequence_6 = { 488b87e0000000 4885c0 7409 4839b0b8000000 750c 488d8fc00a0000 e8???????? }
$sequence_7 = { 8903 e9???????? 4c8b08 4d85c9 0f8448030000 81c6ffffefff }
$sequence_8 = { 4533ed 4c39afc00a0000 0f8436010000 498b16 488d0d42890400 e8???????? }
$sequence_9 = { 41b849000000 440f45c0 0fbe8280060000 413bc0 741e 488b81a0010000 41b113 }
condition:
7 of them and filesize < 995328
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { b81b000000 e9???????? 488987a8020000 e9???????? 488b8fa8020000 e8???????? 488b87e0000000 } | |
| $sequence_1 | hex | { 488d0d66790100 e8???????? 488b442438 488905???????? 488d442438 4883c008 488905???????? } | |
| $sequence_2 | hex | { 48896c2420 57 4154 4157 4883ec30 4d63f8 4d8be1 } | |
| $sequence_3 | hex | { 4803f1 0f84a9010000 4c8bcf 488d1525330300 4d8bc4 488bcd e8???????? } | |
| $sequence_4 | hex | { 896c2420 4c8d05928c0300 498bd6 488bcb e8???????? ff15???????? 3930 } | |
| $sequence_5 | hex | { e8???????? 83f801 0f8596000000 448d482d 4c8d442430 488d542420 8d4816 } | |
| $sequence_6 | hex | { 488b87e0000000 4885c0 7409 4839b0b8000000 750c 488d8fc00a0000 e8???????? } | |
| $sequence_7 | hex | { 8903 e9???????? 4c8b08 4d85c9 0f8448030000 81c6ffffefff } | |
| $sequence_8 | hex | { 4533ed 4c39afc00a0000 0f8436010000 498b16 488d0d42890400 e8???????? } | |
| $sequence_9 | hex | { 41b849000000 440f45c0 0fbe8280060000 413bc0 741e 488b81a0010000 41b113 } |
Condition
7 of them and filesize < 995328In plain words (Heuristic)
- The file must be smaller than 995328 (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: 8199e491-beed-5ae7-9c1e-27bfeb8315e8
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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