YARA · Malpedia signator rules
MALPEDIA_Win_Mozart_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: Mozart.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-mozart-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mozart_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "83806af7-d9bd-5675-873d-31f6311ab16c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.mozart"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mozart_auto.yar#L1-L119"
= "N/A"
= "99ae6bb8e4f475ba6d77c0ab9a4ae5829ba89933aab4d79d20ca7b2e5c413440"
= 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 = { 7471 57 8b15???????? a1???????? }
$sequence_1 = { 8bc7 2bc6 50 51 56 }
$sequence_2 = { c3 ff15???????? 33d2 3d14050000 0f95c2 4a 83e204 }
$sequence_3 = { f6c410 741a 8b542420 8b0a 45 3be9 760a }
$sequence_4 = { 3bca 736e 8bd0 c1ea0c 83e23f }
$sequence_5 = { 8d3c85c0db4000 8b07 83e61f c1e603 }
$sequence_6 = { 8bd9 33d2 85db 7c12 8d0495f8c84000 }
$sequence_7 = { 84c0 7546 8d942418010000 52 56 e8???????? }
$sequence_8 = { 50 6a01 ffd6 8b35???????? 50 ffd6 8b4c2408 }
$sequence_9 = { 83c408 5d c20400 833d????????02 750d }
condition:
7 of them and filesize < 114688
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 7471 57 8b15???????? a1???????? } | |
| $sequence_1 | hex | { 8bc7 2bc6 50 51 56 } | |
| $sequence_2 | hex | { c3 ff15???????? 33d2 3d14050000 0f95c2 4a 83e204 } | |
| $sequence_3 | hex | { f6c410 741a 8b542420 8b0a 45 3be9 760a } | |
| $sequence_4 | hex | { 3bca 736e 8bd0 c1ea0c 83e23f } | |
| $sequence_5 | hex | { 8d3c85c0db4000 8b07 83e61f c1e603 } | |
| $sequence_6 | hex | { 8bd9 33d2 85db 7c12 8d0495f8c84000 } | |
| $sequence_7 | hex | { 84c0 7546 8d942418010000 52 56 e8???????? } | |
| $sequence_8 | hex | { 50 6a01 ffd6 8b35???????? 50 ffd6 8b4c2408 } | |
| $sequence_9 | hex | { 83c408 5d c20400 833d????????02 750d } |
Condition
7 of them and filesize < 114688In plain words (Heuristic)
- The file must be smaller than 114688 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 83806af7-d9bd-5675-873d-31f6311ab16c
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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