YARA · Malpedia signator rules
MALPEDIA_Win_Vyveva_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: Vyveva.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-vyveva-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Vyveva_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3ffef48f-c957-57e8-b562-ac95c16583e2"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.vyveva"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.vyveva_auto.yar#L1-L134"
= "N/A"
= "f381163425c79c2111283dd22dd78fd5d45105bdfce92e8044d04b9b50ad0bc3"
= 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 = { 89742418 88460c e8???????? 50 8f00 394004 7408 }
$sequence_1 = { c644242097 c644242159 aa e8???????? 8d942488000000 52 68???????? }
$sequence_2 = { 83ec04 5a 83c50a 50 8f02 668b442438 51 }
$sequence_3 = { 8b8e90000000 6a00 41 6a10 898e90000000 51 51 }
$sequence_4 = { c74424fc00000000 014424fc 83ec04 2bc1 58 722c 8d4c246c }
$sequence_5 = { 58 ff7004 59 897914 ff7604 5a 8b7204 }
$sequence_6 = { 56 8f4034 e8???????? ff7534 59 33c0 8d440644 }
$sequence_7 = { 1bc0 2480 0500010000 50 5b 53 6a1d }
$sequence_8 = { fec9 5f 8848ff 895e04 895e08 53 8f460c }
$sequence_9 = { 57 8b460c 85c0 0f8402010000 33c0 034604 3b08 }
condition:
7 of them and filesize < 360448
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 89742418 88460c e8???????? 50 8f00 394004 7408 } | |
| $sequence_1 | hex | { c644242097 c644242159 aa e8???????? 8d942488000000 52 68???????? } | |
| $sequence_2 | hex | { 83ec04 5a 83c50a 50 8f02 668b442438 51 } | |
| $sequence_3 | hex | { 8b8e90000000 6a00 41 6a10 898e90000000 51 51 } | |
| $sequence_4 | hex | { c74424fc00000000 014424fc 83ec04 2bc1 58 722c 8d4c246c } | |
| $sequence_5 | hex | { 58 ff7004 59 897914 ff7604 5a 8b7204 } | |
| $sequence_6 | hex | { 56 8f4034 e8???????? ff7534 59 33c0 8d440644 } | |
| $sequence_7 | hex | { 1bc0 2480 0500010000 50 5b 53 6a1d } | |
| $sequence_8 | hex | { fec9 5f 8848ff 895e04 895e08 53 8f460c } | |
| $sequence_9 | hex | { 57 8b460c 85c0 0f8402010000 33c0 034604 3b08 } |
Condition
7 of them and filesize < 360448In plain words (Heuristic)
- The file must be smaller than 360448 (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: 3ffef48f-c957-57e8-b562-ac95c16583e2
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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