YARA · Malpedia signator rules
MALPEDIA_Win_Railsetter_Auto
autogenerated rule brought to you by yara-signator
MalwareRailsetterMalpedia 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: Railsetter.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-railsetter-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Railsetter_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c45e5098-e995-5824-9e1f-fff841727b35"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.railsetter"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.railsetter_auto.yar#L1-L132"
= "N/A"
= "621471e8e170b617c4c45d2d76a4272856dd60bf407e6bda7ff43a732023d384"
= 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 = { 33c9 894c2448 4585c9 742d 488d05e6f40200 488903 48894b18 }
$sequence_1 = { 0f1006 0f294517 4883781000 7415 41b802000000 488d153e310500 }
$sequence_2 = { 488d0d24f60200 0f57c0 4889442420 48890b 488d5308 488d4c2420 0f1102 }
$sequence_3 = { b903000000 4c8d05a7920200 e8???????? 488bd3 8bcf 4885c0 7408 }
$sequence_4 = { 488d1d9eef0000 eb52 bac0020000 b901000000 e8???????? 488bd8 4885c0 }
$sequence_5 = { 33d2 41b810010000 488d4df4 e8???????? c745f014010000 488d4df0 ff15???????? }
$sequence_6 = { 48896810 48897018 48897820 4156 33ed 4c8d3576470100 }
$sequence_7 = { 498bc2 458bf1 48c1f806 488d0d08bf0200 4183e23f 4d03f0 49c1e206 }
$sequence_8 = { 48c745780f000000 44886d60 ba20000000 488d0def160500 e8???????? c744243010000000 488d542430 }
$sequence_9 = { 48894517 c6451f01 488d4d17 e8???????? 488d05b94a0400 488903 488b55e7 }
condition:
7 of them and filesize < 866304
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 33c9 894c2448 4585c9 742d 488d05e6f40200 488903 48894b18 } | |
| $sequence_1 | hex | { 0f1006 0f294517 4883781000 7415 41b802000000 488d153e310500 } | |
| $sequence_2 | hex | { 488d0d24f60200 0f57c0 4889442420 48890b 488d5308 488d4c2420 0f1102 } | |
| $sequence_3 | hex | { b903000000 4c8d05a7920200 e8???????? 488bd3 8bcf 4885c0 7408 } | |
| $sequence_4 | hex | { 488d1d9eef0000 eb52 bac0020000 b901000000 e8???????? 488bd8 4885c0 } | |
| $sequence_5 | hex | { 33d2 41b810010000 488d4df4 e8???????? c745f014010000 488d4df0 ff15???????? } | |
| $sequence_6 | hex | { 48896810 48897018 48897820 4156 33ed 4c8d3576470100 } | |
| $sequence_7 | hex | { 498bc2 458bf1 48c1f806 488d0d08bf0200 4183e23f 4d03f0 49c1e206 } | |
| $sequence_8 | hex | { 48c745780f000000 44886d60 ba20000000 488d0def160500 e8???????? c744243010000000 488d542430 } | |
| $sequence_9 | hex | { 48894517 c6451f01 488d4d17 e8???????? 488d05b94a0400 488903 488b55e7 } |
Condition
7 of them and filesize < 866304In plain words (Heuristic)
- The file must be smaller than 866304 (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: c45e5098-e995-5824-9e1f-fff841727b35
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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