YARA · Malpedia signator rules
MALPEDIA_Win_Wannahusky_Auto
autogenerated rule brought to you by yara-signator
MalwareWannahuskyMalpedia 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: Wannahusky.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-wannahusky-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Wannahusky_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d07bf394-315f-5a24-9069-13fbab096483"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.wannahusky"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.wannahusky_auto.yar#L1-L115"
= "N/A"
= "48e1e3f7fa02618598c79905c2c3fa94624d56bff69420b790850e4ab59601f6"
= 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 = { c7042400000000 89f1 89da e8???????? 89c3 a1???????? }
$sequence_1 = { c605????????12 c705????????00000000 c705????????28b34100 c705????????00000000 c705????????04000000 }
$sequence_2 = { c700???????? 89582c c74004???????? c74008???????? c7400c94cb4000 c74010ddcb4000 }
$sequence_3 = { c605????????11 c705????????80bb4100 c705????????00000000 c605????????02 c705????????70b24100 c705????????04000000 c705????????04000000 }
$sequence_4 = { 89d7 f3a5 8d8d98fbffff 89442404 }
$sequence_5 = { c705????????0c1e4100 c705????????f0b54100 c705????????04000000 c705????????04000000 }
$sequence_6 = { c705????????02000000 c605????????02 c705????????80b44100 c705????????a8b54100 c705????????04000000 c705????????04000000 c605????????16 }
$sequence_7 = { e8???????? ba01000000 8d8dfcfaffff 8985fcfaffff }
$sequence_8 = { c705????????f91d4100 c705????????0a000000 c605????????02 c705????????20b64100 }
$sequence_9 = { e8???????? 8b45e4 8945c4 837dc400 }
condition:
7 of them and filesize < 862208
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c7042400000000 89f1 89da e8???????? 89c3 a1???????? } | |
| $sequence_1 | hex | { c605????????12 c705????????00000000 c705????????28b34100 c705????????00000000 c705????????04000000 } | |
| $sequence_2 | hex | { c700???????? 89582c c74004???????? c74008???????? c7400c94cb4000 c74010ddcb4000 } | |
| $sequence_3 | hex | { c605????????11 c705????????80bb4100 c705????????00000000 c605????????02 c705????????70b24100 c705????????04000000 c705????????04000000 } | |
| $sequence_4 | hex | { 89d7 f3a5 8d8d98fbffff 89442404 } | |
| $sequence_5 | hex | { c705????????0c1e4100 c705????????f0b54100 c705????????04000000 c705????????04000000 } | |
| $sequence_6 | hex | { c705????????02000000 c605????????02 c705????????80b44100 c705????????a8b54100 c705????????04000000 c705????????04000000 c605????????16 } | |
| $sequence_7 | hex | { e8???????? ba01000000 8d8dfcfaffff 8985fcfaffff } | |
| $sequence_8 | hex | { c705????????f91d4100 c705????????0a000000 c605????????02 c705????????20b64100 } | |
| $sequence_9 | hex | { e8???????? 8b45e4 8945c4 837dc400 } |
Condition
7 of them and filesize < 862208In plain words (Heuristic)
- The file must be smaller than 862208 (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: d07bf394-315f-5a24-9069-13fbab096483
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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