YARA · Malpedia signator rules
MALPEDIA_Win_Retro_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: Retro.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-retro-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Retro_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "54b24fe9-9fd1-54c0-a395-935122df7bc0"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.retro"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.retro_auto.yar#L1-L132"
= "N/A"
= "599af0bfd5ee60a1ba65ef57ea0c1de02676fdbfc366b689801c1bd471d36af8"
= 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 = { f20f59c2 f20f5c2dd713fcff f20f59da f20f580d9b14fcff f20f58056314fcff f20f582dbb13fcff f20f59da }
$sequence_1 = { 488b442440 eb02 33c0 488b8c2470010000 4833cc e8???????? 4881c480010000 }
$sequence_2 = { 0f284c2470 0f11443340 0f114c3350 89443360 83c364 83bfa000000000 740b }
$sequence_3 = { f30f1025???????? 0f28ec f30f59e6 f3410f59ee f30f5829 f30f58642408 }
$sequence_4 = { 41f7e4 d1ea 410f2ff0 f30f5844947c f30f1144947c 7626 450f2fc2 }
$sequence_5 = { 75ba e9???????? 48636c2458 4533c9 4883f904 0f8c36010000 488d79fc }
$sequence_6 = { 4c8d1d96660000 f30fe6cc f20f1015???????? f20f59d1 660f7ee1 48c7c03f000000 23c1 }
$sequence_7 = { 0f28c3 f30f1049fc f30f58d0 f30f59c9 0f2fd9 f30f58e1 7703 }
$sequence_8 = { 410bc8 410bc0 81c9c0000000 0fbae807 894af8 8942f4 4183f905 }
$sequence_9 = { 48ffcb 75ee 488b9c2430010000 85f6 7e24 8bd6 }
condition:
7 of them and filesize < 1409024
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { f20f59c2 f20f5c2dd713fcff f20f59da f20f580d9b14fcff f20f58056314fcff f20f582dbb13fcff f20f59da } | |
| $sequence_1 | hex | { 488b442440 eb02 33c0 488b8c2470010000 4833cc e8???????? 4881c480010000 } | |
| $sequence_2 | hex | { 0f284c2470 0f11443340 0f114c3350 89443360 83c364 83bfa000000000 740b } | |
| $sequence_3 | hex | { f30f1025???????? 0f28ec f30f59e6 f3410f59ee f30f5829 f30f58642408 } | |
| $sequence_4 | hex | { 41f7e4 d1ea 410f2ff0 f30f5844947c f30f1144947c 7626 450f2fc2 } | |
| $sequence_5 | hex | { 75ba e9???????? 48636c2458 4533c9 4883f904 0f8c36010000 488d79fc } | |
| $sequence_6 | hex | { 4c8d1d96660000 f30fe6cc f20f1015???????? f20f59d1 660f7ee1 48c7c03f000000 23c1 } | |
| $sequence_7 | hex | { 0f28c3 f30f1049fc f30f58d0 f30f59c9 0f2fd9 f30f58e1 7703 } | |
| $sequence_8 | hex | { 410bc8 410bc0 81c9c0000000 0fbae807 894af8 8942f4 4183f905 } | |
| $sequence_9 | hex | { 48ffcb 75ee 488b9c2430010000 85f6 7e24 8bd6 } |
Condition
7 of them and filesize < 1409024In plain words (Heuristic)
- The file must be smaller than 1409024 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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: 54b24fe9-9fd1-54c0-a395-935122df7bc0
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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