YARA · Malpedia signator rules
MALPEDIA_Win_Mykings_Spreader_Auto
autogenerated rule brought to you by yara-signator
MalwareMykings SpreaderMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2023-12-06
- Modified
- 2023-12-08
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Mykings Spreader.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-mykings-spreader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mykings_Spreader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "96a12e80-b15f-580e-920d-d6c0d35464b0"
= "2023-12-06"
= "2023-12-08"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.mykings_spreader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mykings_spreader_auto.yar#L1-L132"
= "N/A"
= "1bcd674173fea4b83a2f4219e8f61306a972490f94a89cfaf5e1f466fdec8eff"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20231130"
= "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351"
= "20230808"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 7519 51 55 8bce e8???????? 6a00 6a00 }
$sequence_1 = { 8b1e ff938c000000 8b0424 8b5014 85d2 7507 bf00000000 }
$sequence_2 = { e8???????? 837e1800 7439 8b4620 c1e003 89c7 8b4618 }
$sequence_3 = { 89c1 c745f401000000 3b4df4 723d ff4df4 8d7600 ff45f4 }
$sequence_4 = { 68???????? 50 ff15???????? a3???????? 83c0fe 40 40 }
$sequence_5 = { 8942fc 89d8 c1f81f 8b1424 8b7208 8b4a0c 29de }
$sequence_6 = { eb02 b300 e8???????? 8d45cc e8???????? c745cc00000000 58 }
$sequence_7 = { 33d2 b9???????? 8bc2 8bf2 c1f805 83e61f 8b0485a02e4100 }
$sequence_8 = { 89d8 29f0 85c0 7e39 8b55f4 85d2 7505 }
$sequence_9 = { 8b7508 8b36 8975c8 8b7d08 8b7f04 }
condition:
7 of them and filesize < 1581056
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 7519 51 55 8bce e8???????? 6a00 6a00 } | |
| $sequence_1 | hex | { 8b1e ff938c000000 8b0424 8b5014 85d2 7507 bf00000000 } | |
| $sequence_2 | hex | { e8???????? 837e1800 7439 8b4620 c1e003 89c7 8b4618 } | |
| $sequence_3 | hex | { 89c1 c745f401000000 3b4df4 723d ff4df4 8d7600 ff45f4 } | |
| $sequence_4 | hex | { 68???????? 50 ff15???????? a3???????? 83c0fe 40 40 } | |
| $sequence_5 | hex | { 8942fc 89d8 c1f81f 8b1424 8b7208 8b4a0c 29de } | |
| $sequence_6 | hex | { eb02 b300 e8???????? 8d45cc e8???????? c745cc00000000 58 } | |
| $sequence_7 | hex | { 33d2 b9???????? 8bc2 8bf2 c1f805 83e61f 8b0485a02e4100 } | |
| $sequence_8 | hex | { 89d8 29f0 85c0 7e39 8b55f4 85d2 7505 } | |
| $sequence_9 | hex | { 8b7508 8b36 8975c8 8b7d08 8b7f04 } |
Condition
7 of them and filesize < 1581056In plain words (Heuristic)
- The file must be smaller than 1581056 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 96a12e80-b15f-580e-920d-d6c0d35464b0
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20231130 |
| malpedia_hash | fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351 |
| malpedia_version | 20230808 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04