YARA · Malpedia signator rules
MALPEDIA_Win_Ruckguv_Auto
autogenerated rule brought to you by yara-signator
MalwareRuckguvMalpedia 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: Ruckguv.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ruckguv-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ruckguv_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a3926da9-97d4-5c70-97f8-77af66641269"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ruckguv"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ruckguv_auto.yar#L1-L126"
= "N/A"
= "bd33d6f723961a50547735b694a0e61de28f94951db04f9854c4c4eb5b1ef5c3"
= 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 = { 53 56 fe4513 0fb64d13 8d3401 8a16 0055ff }
$sequence_1 = { 50 e8???????? 59 50 e8???????? 68???????? 50 }
$sequence_2 = { 8b4834 3bf1 7504 b001 eb7c 8b80a0000000 }
$sequence_3 = { 6a01 e8???????? 83c428 8d8da0feffff 51 }
$sequence_4 = { 05f8000000 813f50450000 894508 0f851c010000 8b5f50 68fe6a7a69 }
$sequence_5 = { 0fb645fe 03c1 8a18 fe45ff 881e 8810 660fb645ff }
$sequence_6 = { 8d859cfdffff 50 68???????? e8???????? 6814f1f808 6a01 897558 }
$sequence_7 = { 59 eb1e 8d45d0 ebeb 8d45b4 }
$sequence_8 = { 8b37 85f6 7503 8b7710 03f3 }
$sequence_9 = { 53 33d2 56 57 8855ff 8855fe 889100010000 }
condition:
7 of them and filesize < 41024
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 53 56 fe4513 0fb64d13 8d3401 8a16 0055ff } | |
| $sequence_1 | hex | { 50 e8???????? 59 50 e8???????? 68???????? 50 } | |
| $sequence_2 | hex | { 8b4834 3bf1 7504 b001 eb7c 8b80a0000000 } | |
| $sequence_3 | hex | { 6a01 e8???????? 83c428 8d8da0feffff 51 } | |
| $sequence_4 | hex | { 05f8000000 813f50450000 894508 0f851c010000 8b5f50 68fe6a7a69 } | |
| $sequence_5 | hex | { 0fb645fe 03c1 8a18 fe45ff 881e 8810 660fb645ff } | |
| $sequence_6 | hex | { 8d859cfdffff 50 68???????? e8???????? 6814f1f808 6a01 897558 } | |
| $sequence_7 | hex | { 59 eb1e 8d45d0 ebeb 8d45b4 } | |
| $sequence_8 | hex | { 8b37 85f6 7503 8b7710 03f3 } | |
| $sequence_9 | hex | { 53 33d2 56 57 8855ff 8855fe 889100010000 } |
Condition
7 of them and filesize < 41024In plain words (Heuristic)
- The file must be smaller than 41024 (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: a3926da9-97d4-5c70-97f8-77af66641269
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