YARA · Malpedia signator rules
MALPEDIA_Win_Nevada_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: Nevada.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-nevada-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nevada_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "dd945406-d76e-5a64-a7a3-25dc9f81e6d4"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.nevada"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nevada_auto.yar#L1-L134"
= "N/A"
= "039061a87d5b2715f05ce587085775dc26f2cd6ca08570e45d99b5e058440eb0"
= 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 = { 8bd9 4c8d0de5f00100 b904000000 4c8d05d1f00100 488d15c2da0100 e8???????? 8bcb }
$sequence_1 = { 4885f6 488b5d28 0f8540020000 48c7431000000000 488b33 4889f1 baffffffff }
$sequence_2 = { e8???????? 807d6000 7515 807d6101 0f84e3feffff 488d4df8 e8???????? }
$sequence_3 = { 488945c0 48c745c800000000 488d05067c0300 488945f0 48c745f801000000 48c7450000000000 488d05835a0300 }
$sequence_4 = { 49896f48 488b6c2420 49896f50 488b6c2460 49896f58 488b6c2458 49896f60 }
$sequence_5 = { 4c39d1 7613 4889c8 4829d0 757c e9???????? 4c8d52f0 }
$sequence_6 = { 0fb6473a 3c03 0f84b3010000 4138c4 0f8677feffff e9???????? 807c242700 }
$sequence_7 = { 488b8c24a0000000 488bbc2498000000 488d0439 48898424c8020000 4c8b4c2430 4b8d0431 48898424d0020000 }
$sequence_8 = { 4901ff 488db5a0050000 660f1f840000000000 4c39ff 0f840c020000 488b95b0050000 483b95a8050000 }
$sequence_9 = { bf10000000 480f45f8 488d442450 41bd20000000 4c0f45e8 80fa01 777b }
condition:
7 of them and filesize < 1063936
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8bd9 4c8d0de5f00100 b904000000 4c8d05d1f00100 488d15c2da0100 e8???????? 8bcb } | |
| $sequence_1 | hex | { 4885f6 488b5d28 0f8540020000 48c7431000000000 488b33 4889f1 baffffffff } | |
| $sequence_2 | hex | { e8???????? 807d6000 7515 807d6101 0f84e3feffff 488d4df8 e8???????? } | |
| $sequence_3 | hex | { 488945c0 48c745c800000000 488d05067c0300 488945f0 48c745f801000000 48c7450000000000 488d05835a0300 } | |
| $sequence_4 | hex | { 49896f48 488b6c2420 49896f50 488b6c2460 49896f58 488b6c2458 49896f60 } | |
| $sequence_5 | hex | { 4c39d1 7613 4889c8 4829d0 757c e9???????? 4c8d52f0 } | |
| $sequence_6 | hex | { 0fb6473a 3c03 0f84b3010000 4138c4 0f8677feffff e9???????? 807c242700 } | |
| $sequence_7 | hex | { 488b8c24a0000000 488bbc2498000000 488d0439 48898424c8020000 4c8b4c2430 4b8d0431 48898424d0020000 } | |
| $sequence_8 | hex | { 4901ff 488db5a0050000 660f1f840000000000 4c39ff 0f840c020000 488b95b0050000 483b95a8050000 } | |
| $sequence_9 | hex | { bf10000000 480f45f8 488d442450 41bd20000000 4c0f45e8 80fa01 777b } |
Condition
7 of them and filesize < 1063936In plain words (Heuristic)
- The file must be smaller than 1063936 (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: dd945406-d76e-5a64-a7a3-25dc9f81e6d4
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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