YARA · Malpedia signator rules
MALPEDIA_Win_Chaperone_Auto
autogenerated rule brought to you by yara-signator
MalwareChaperoneMalpedia 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: Chaperone.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-chaperone-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Chaperone_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3066427d-87e8-5913-b7f1-f941f10f276f"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.chaperone"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.chaperone_auto.yar#L1-L125"
= "N/A"
= "4e322f47e0a918b2877ba0917282a9cd49fff775f9a9c6b3cc2bc03f73873c67"
= 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 = { 0f8557010000 488dbc2428050000 488d35aca90100 b92a000000 f3a4 488d8c2428050000 e8???????? }
$sequence_1 = { 488d1591c80000 448bc7 8bcf ff15???????? }
$sequence_2 = { e8???????? 4863942440010000 4c8d442430 488b4c2420 e8???????? 488b8c2458010000 4833cc }
$sequence_3 = { 488d7b58 be06000000 488d05d5bd0100 483947f0 }
$sequence_4 = { 89442424 448b442424 33d2 b900040000 ff15???????? 4889442470 48837c247000 }
$sequence_5 = { 837c243000 740a 83bc24a00700001f 7545 488d442434 4889442428 8b8424a0070000 }
$sequence_6 = { 48898424c0020000 837c243400 746b 4c8b842490000000 8b542434 488b8c24c0020000 e8???????? }
$sequence_7 = { 488d8c24b0440000 e8???????? 4885c0 0f8441030000 488d8c24b0440000 e8???????? }
$sequence_8 = { 4533c0 33d2 33c9 e8???????? 4c8d050c0a0100 498bd5 488bcf }
$sequence_9 = { 4889442450 488b8424a8000000 4889442448 488b8424a0000000 4889442440 }
condition:
7 of them and filesize < 373760
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 0f8557010000 488dbc2428050000 488d35aca90100 b92a000000 f3a4 488d8c2428050000 e8???????? } | |
| $sequence_1 | hex | { 488d1591c80000 448bc7 8bcf ff15???????? } | |
| $sequence_2 | hex | { e8???????? 4863942440010000 4c8d442430 488b4c2420 e8???????? 488b8c2458010000 4833cc } | |
| $sequence_3 | hex | { 488d7b58 be06000000 488d05d5bd0100 483947f0 } | |
| $sequence_4 | hex | { 89442424 448b442424 33d2 b900040000 ff15???????? 4889442470 48837c247000 } | |
| $sequence_5 | hex | { 837c243000 740a 83bc24a00700001f 7545 488d442434 4889442428 8b8424a0070000 } | |
| $sequence_6 | hex | { 48898424c0020000 837c243400 746b 4c8b842490000000 8b542434 488b8c24c0020000 e8???????? } | |
| $sequence_7 | hex | { 488d8c24b0440000 e8???????? 4885c0 0f8441030000 488d8c24b0440000 e8???????? } | |
| $sequence_8 | hex | { 4533c0 33d2 33c9 e8???????? 4c8d050c0a0100 498bd5 488bcf } | |
| $sequence_9 | hex | { 4889442450 488b8424a8000000 4889442448 488b8424a0000000 4889442440 } |
Condition
7 of them and filesize < 373760In plain words (Heuristic)
- The file must be smaller than 373760 (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: 3066427d-87e8-5913-b7f1-f941f10f276f
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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