YARA · Malpedia signator rules
MALPEDIA_Win_Dnespy_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: Dnespy.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-dnespy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dnespy_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "6ad9df4c-5a33-513f-97c8-10355272b5e9"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.dnespy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dnespy_auto.yar#L1-L131"
= "N/A"
= "7122d179219cca1256e739bba538cf24826e3a3104c038607a1dcb344b5e9f45"
= 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 e8???????? 0f108558ddffff 83c408 }
$sequence_1 = { e8???????? 8b956cffffff 8845a7 83fa10 722f 8b8d58ffffff 42 }
$sequence_2 = { 894108 8bcb 8b4224 c1e908 89480c eb05 8bcb }
$sequence_3 = { 8d420c 8b8a60e9ffff 33c8 e8???????? 8b4af8 33c8 e8???????? }
$sequence_4 = { 8d4590 c645fc0b 50 8bcf e8???????? 8b55a4 83fa10 }
$sequence_5 = { 8b5d08 895dd8 c745d400000000 c7431000000000 c743140f000000 c60300 c745fc00000000 }
$sequence_6 = { 8b542414 83faff 0f83a0000000 8810 8bc5 0facc208 89542418 }
$sequence_7 = { 8d45e0 50 e8???????? 6a00 68???????? 68???????? 6a00 }
$sequence_8 = { 7711 7207 3dffff0000 7308 89442410 894c2424 6804040000 }
$sequence_9 = { 5b 8be5 5d c20800 52 50 51 }
condition:
7 of them and filesize < 794624
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 51 e8???????? 0f108558ddffff 83c408 } | |
| $sequence_1 | hex | { e8???????? 8b956cffffff 8845a7 83fa10 722f 8b8d58ffffff 42 } | |
| $sequence_2 | hex | { 894108 8bcb 8b4224 c1e908 89480c eb05 8bcb } | |
| $sequence_3 | hex | { 8d420c 8b8a60e9ffff 33c8 e8???????? 8b4af8 33c8 e8???????? } | |
| $sequence_4 | hex | { 8d4590 c645fc0b 50 8bcf e8???????? 8b55a4 83fa10 } | |
| $sequence_5 | hex | { 8b5d08 895dd8 c745d400000000 c7431000000000 c743140f000000 c60300 c745fc00000000 } | |
| $sequence_6 | hex | { 8b542414 83faff 0f83a0000000 8810 8bc5 0facc208 89542418 } | |
| $sequence_7 | hex | { 8d45e0 50 e8???????? 6a00 68???????? 68???????? 6a00 } | |
| $sequence_8 | hex | { 7711 7207 3dffff0000 7308 89442410 894c2424 6804040000 } | |
| $sequence_9 | hex | { 5b 8be5 5d c20800 52 50 51 } |
Condition
7 of them and filesize < 794624In plain words (Heuristic)
- The file must be smaller than 794624 (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: 6ad9df4c-5a33-513f-97c8-10355272b5e9
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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