YARA · Malpedia signator rules
MALPEDIA_Win_Oatboat_Auto
autogenerated rule brought to you by yara-signator
MalwareOatboatMalpedia 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: Oatboat.
It defines 8 patterns (0 text, 8 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-oatboat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Oatboat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b70deb15-907c-57e5-93db-769ef748fca1"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.oatboat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.oatboat_auto.yar#L1-L110"
= "N/A"
= "4fd89130628ae6dae46c069641713f47111051d9b2170bf05ebbd8e8d8374841"
= 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 = { c745e872747561 c745ec6c4d656d c745f06f727900 e8???????? 41b900800000 4c8d4540 488d5548 }
$sequence_1 = { 4c896538 c745e04e74416c c745e46c6f6361 c745e874655669 c745ec72747561 c745f06c4d656d }
$sequence_2 = { 488d48d8 c740dc64006c00 33db c740e06c002e00 c740e464006c00 c740e86c000000 e8???????? }
$sequence_3 = { 55 4156 4157 488bec 4883ec30 65488b042560000000 }
$sequence_4 = { c740e86c000000 e8???????? 4885c0 740e 488bd7 488bc8 }
$sequence_5 = { e8???????? 488bd8 488b7c2458 488bc3 488b5c2450 4883c440 5d }
$sequence_6 = { c745f04c6f6164 c745f44c696272 c745f861727957 44887dfc e8???????? 488bcf }
$sequence_7 = { 66895df8 c745e845004c00 c745ec33003200 c745f02e004400 c745f44c004c00 e8???????? 4885c0 }
condition:
7 of them and filesize < 58368
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c745e872747561 c745ec6c4d656d c745f06f727900 e8???????? 41b900800000 4c8d4540 488d5548 } | |
| $sequence_1 | hex | { 4c896538 c745e04e74416c c745e46c6f6361 c745e874655669 c745ec72747561 c745f06c4d656d } | |
| $sequence_2 | hex | { 488d48d8 c740dc64006c00 33db c740e06c002e00 c740e464006c00 c740e86c000000 e8???????? } | |
| $sequence_3 | hex | { 55 4156 4157 488bec 4883ec30 65488b042560000000 } | |
| $sequence_4 | hex | { c740e86c000000 e8???????? 4885c0 740e 488bd7 488bc8 } | |
| $sequence_5 | hex | { e8???????? 488bd8 488b7c2458 488bc3 488b5c2450 4883c440 5d } | |
| $sequence_6 | hex | { c745f04c6f6164 c745f44c696272 c745f861727957 44887dfc e8???????? 488bcf } | |
| $sequence_7 | hex | { 66895df8 c745e845004c00 c745ec33003200 c745f02e004400 c745f44c004c00 e8???????? 4885c0 } |
Condition
7 of them and filesize < 58368In plain words (Heuristic)
- The file must be smaller than 58368 (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: b70deb15-907c-57e5-93db-769ef748fca1
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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