YARA · Malpedia signator rules
MALPEDIA_Win_Cameleon_Auto
autogenerated rule brought to you by yara-signator
MalwareCameleonMalpedia 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: Cameleon.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-cameleon-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Cameleon_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e40c4ff3-5c93-5f3f-97ce-ce981e4b7a6c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.cameleon"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cameleon_auto.yar#L1-L125"
= "N/A"
= "644560948d1e9d94a94549954ead48f81d616d5f4876406316acd5719620707c"
= 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 = { 8b4004 c74408e0bc4b0510 8b41e0 8b5004 }
$sequence_1 = { 56 e8???????? eb65 8b4db8 83f910 0f83d4000000 83c8ff }
$sequence_2 = { 8d41e0 3c5a 770f 0fbec1 0fb68018fb0410 83e00f eb02 }
$sequence_3 = { 8b08 8b4904 f644010c06 7539 0f1f00 8d8504ffffff 50 }
$sequence_4 = { 57 8d1c8510d40510 33c0 f00fb10b 8b15???????? 83cfff 8bca }
$sequence_5 = { 8a90ac4c0510 e8???????? 0fbe06 83e00f 8a90ac4c0510 8d8dccfeffff }
$sequence_6 = { 8bc2 8bca 83e03f c1f906 6bc030 03048d50d60510 eb05 }
$sequence_7 = { 8365fc00 8b45e4 8b048550d60510 8b4de0 f644082801 }
$sequence_8 = { 0f43559c 66833a00 7504 33c9 }
$sequence_9 = { 0f8497040000 8b75a4 3b75a8 0f848b040000 660f1f840000000000 8d8db4feffff e8???????? }
condition:
7 of them and filesize < 824320
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b4004 c74408e0bc4b0510 8b41e0 8b5004 } | |
| $sequence_1 | hex | { 56 e8???????? eb65 8b4db8 83f910 0f83d4000000 83c8ff } | |
| $sequence_2 | hex | { 8d41e0 3c5a 770f 0fbec1 0fb68018fb0410 83e00f eb02 } | |
| $sequence_3 | hex | { 8b08 8b4904 f644010c06 7539 0f1f00 8d8504ffffff 50 } | |
| $sequence_4 | hex | { 57 8d1c8510d40510 33c0 f00fb10b 8b15???????? 83cfff 8bca } | |
| $sequence_5 | hex | { 8a90ac4c0510 e8???????? 0fbe06 83e00f 8a90ac4c0510 8d8dccfeffff } | |
| $sequence_6 | hex | { 8bc2 8bca 83e03f c1f906 6bc030 03048d50d60510 eb05 } | |
| $sequence_7 | hex | { 8365fc00 8b45e4 8b048550d60510 8b4de0 f644082801 } | |
| $sequence_8 | hex | { 0f43559c 66833a00 7504 33c9 } | |
| $sequence_9 | hex | { 0f8497040000 8b75a4 3b75a8 0f848b040000 660f1f840000000000 8d8db4feffff e8???????? } |
Condition
7 of them and filesize < 824320In plain words (Heuristic)
- The file must be smaller than 824320 (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: e40c4ff3-5c93-5f3f-97ce-ce981e4b7a6c
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
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