YARA · Malpedia signator rules
MALPEDIA_Win_Dynowiper_Auto
autogenerated rule brought to you by yara-signator
MalwareDynowiperMalpedia 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: Dynowiper.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-dynowiper-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dynowiper_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "6f53cc06-0a79-54dc-a61c-834614c7219e"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.dynowiper"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dynowiper_auto.yar#L1-L125"
= "N/A"
= "87ffa3582c8bdc798a3280ec361a38c33e352272284eb95668c020eadf0b3cc1"
= 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 = { 7528 8d45ec c745ec54474200 50 8d4ddc e8???????? 68???????? }
$sequence_1 = { e9???????? 8b95ecefffff 8b8ddcefffff 2b7b08 037b04 8b049590914200 8b95f4efffff }
$sequence_2 = { 8b45f4 56 ff75e4 8b048590914200 }
$sequence_3 = { 8bd8 6a00 85db 7f1f }
$sequence_4 = { 85c9 7465 8b06 8b04b8 8901 eb5c 8b5608 }
$sequence_5 = { 80b85081420000 751d 8b5df0 83fa04 7f12 3bf3 }
$sequence_6 = { ff15???????? 85c0 7443 8d44240c c744240801000000 50 }
$sequence_7 = { 8d4900 8b06 3d70020000 7509 8bce e8???????? }
$sequence_8 = { 83c404 33c0 c745e807000000 837dd010 668945d4 8945e4 720b }
$sequence_9 = { 33882c060000 33ca 8988b8090000 4e 75c9 eb0e 3de0040000 }
condition:
7 of them and filesize < 374784
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 7528 8d45ec c745ec54474200 50 8d4ddc e8???????? 68???????? } | |
| $sequence_1 | hex | { e9???????? 8b95ecefffff 8b8ddcefffff 2b7b08 037b04 8b049590914200 8b95f4efffff } | |
| $sequence_2 | hex | { 8b45f4 56 ff75e4 8b048590914200 } | |
| $sequence_3 | hex | { 8bd8 6a00 85db 7f1f } | |
| $sequence_4 | hex | { 85c9 7465 8b06 8b04b8 8901 eb5c 8b5608 } | |
| $sequence_5 | hex | { 80b85081420000 751d 8b5df0 83fa04 7f12 3bf3 } | |
| $sequence_6 | hex | { ff15???????? 85c0 7443 8d44240c c744240801000000 50 } | |
| $sequence_7 | hex | { 8d4900 8b06 3d70020000 7509 8bce e8???????? } | |
| $sequence_8 | hex | { 83c404 33c0 c745e807000000 837dd010 668945d4 8945e4 720b } | |
| $sequence_9 | hex | { 33882c060000 33ca 8988b8090000 4e 75c9 eb0e 3de0040000 } |
Condition
7 of them and filesize < 374784In plain words (Heuristic)
- The file must be smaller than 374784 (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: 6f53cc06-0a79-54dc-a61c-834614c7219e
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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