YARA · Malpedia signator rules
MALPEDIA_Win_Fullmetal_Auto
autogenerated rule brought to you by yara-signator
MalwareFullmetalMalpedia 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: Fullmetal.
It defines 8 patterns (0 text, 8 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-fullmetal-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Fullmetal_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "855da0e4-b67c-5e96-940e-51fe9337ca3a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.fullmetal"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.fullmetal_auto.yar#L1-L101"
= "N/A"
= "6ff59e0e5bd1ba537b4bb84615f6a75f4daef5ba07d099bc3ea4d3a200088092"
= 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 = { 488bc8 33d2 e8???????? 488bd8 4885c0 7517 }
$sequence_1 = { 4863c8 4881f9ff0f0000 7366 807c39ff5c 740a }
$sequence_2 = { 75f6 48c7c1ffffffff 48ffc1 803c0a00 75f7 48ffc0 }
$sequence_3 = { 4b0394d8404a0400 8a02 88440dff 48ffc1 48ffc2 }
$sequence_4 = { e8???????? 4885c0 7520 41b800100000 }
$sequence_5 = { c3 a1????????3d0000a1 3c00 00053d0000f3 3c00 }
$sequence_6 = { 7512 ff15???????? 4c8d0d06970200 e9???????? 488d1512970200 488bcb }
$sequence_7 = { 4d63c8 488bd3 4c8d8340010000 4c895c2420 ff15???????? 0f1000 }
condition:
7 of them and filesize < 733184
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 488bc8 33d2 e8???????? 488bd8 4885c0 7517 } | |
| $sequence_1 | hex | { 4863c8 4881f9ff0f0000 7366 807c39ff5c 740a } | |
| $sequence_2 | hex | { 75f6 48c7c1ffffffff 48ffc1 803c0a00 75f7 48ffc0 } | |
| $sequence_3 | hex | { 4b0394d8404a0400 8a02 88440dff 48ffc1 48ffc2 } | |
| $sequence_4 | hex | { e8???????? 4885c0 7520 41b800100000 } | |
| $sequence_5 | hex | { c3 a1????????3d0000a1 3c00 00053d0000f3 3c00 } | |
| $sequence_6 | hex | { 7512 ff15???????? 4c8d0d06970200 e9???????? 488d1512970200 488bcb } | |
| $sequence_7 | hex | { 4d63c8 488bd3 4c8d8340010000 4c895c2420 ff15???????? 0f1000 } |
Condition
7 of them and filesize < 733184In plain words (Heuristic)
- The file must be smaller than 733184 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 855da0e4-b67c-5e96-940e-51fe9337ca3a
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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