YARA · Malpedia signator rules
MALPEDIA_Win_Coredn_Auto
autogenerated rule brought to you by yara-signator
- 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: Coredn.
It defines 15 patterns (0 text, 15 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-coredn-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Coredn_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e9fc964d-6932-50e6-9a6d-da9755e9c916"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.coredn"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.coredn_auto.yar#L1-L161"
= "N/A"
= "7d9edbb68b504dec3f9ba24b68f1383d8814ab8f2dfe1d64015ce60053d3dd65"
= 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 = { 51 56 8d45fc 8bf1 50 e8???????? 85c0 }
$sequence_1 = { 7415 8801 41 83ea01 }
$sequence_2 = { 53 57 bf00000000 8d0432 2bca 7438 }
$sequence_3 = { 741c 8818 4a 40 83e901 75ec }
$sequence_4 = { 5e 5d c20400 c60100 33c0 }
$sequence_5 = { 7423 8a1c06 84db 741c }
$sequence_6 = { 0f1f440000 3811 7408 41 83e801 75f6 }
$sequence_7 = { 41 83ea01 75e7 8851ff b87a000780 }
$sequence_8 = { 740b 6a01 50 e8???????? 83c408 8b442420 85c0 }
$sequence_9 = { 50 e8???????? 83c40c 6b45e430 8945e0 8d80a8304100 }
$sequence_10 = { e8???????? 83c408 8d842490040000 50 }
$sequence_11 = { 8365fc00 8b049d08414100 8b4de0 f644082801 7515 }
$sequence_12 = { 668945e8 8b45d4 886de5 8b148508414100 8a4c1a2d f6c104 7419 }
$sequence_13 = { 6808020000 8d842494040000 6a00 50 e8???????? }
$sequence_14 = { 8bcf 8bc7 894de4 399898304100 0f84ea000000 }
condition:
7 of them and filesize < 270336
}
Strings (15 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 51 56 8d45fc 8bf1 50 e8???????? 85c0 } | |
| $sequence_1 | hex | { 7415 8801 41 83ea01 } | |
| $sequence_2 | hex | { 53 57 bf00000000 8d0432 2bca 7438 } | |
| $sequence_3 | hex | { 741c 8818 4a 40 83e901 75ec } | |
| $sequence_4 | hex | { 5e 5d c20400 c60100 33c0 } | |
| $sequence_5 | hex | { 7423 8a1c06 84db 741c } | |
| $sequence_6 | hex | { 0f1f440000 3811 7408 41 83e801 75f6 } | |
| $sequence_7 | hex | { 41 83ea01 75e7 8851ff b87a000780 } | |
| $sequence_8 | hex | { 740b 6a01 50 e8???????? 83c408 8b442420 85c0 } | |
| $sequence_9 | hex | { 50 e8???????? 83c40c 6b45e430 8945e0 8d80a8304100 } | |
| $sequence_10 | hex | { e8???????? 83c408 8d842490040000 50 } | |
| $sequence_11 | hex | { 8365fc00 8b049d08414100 8b4de0 f644082801 7515 } | |
| $sequence_12 | hex | { 668945e8 8b45d4 886de5 8b148508414100 8a4c1a2d f6c104 7419 } | |
| $sequence_13 | hex | { 6808020000 8d842494040000 6a00 50 e8???????? } | |
| $sequence_14 | hex | { 8bcf 8bc7 894de4 399898304100 0f84ea000000 } |
Condition
7 of them and filesize < 270336In plain words (Heuristic)
- The file must be smaller than 270336 (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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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: e9fc964d-6932-50e6-9a6d-da9755e9c916
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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