YARA · Malpedia signator rules
MALPEDIA_Win_Kazuar_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: Kazuar.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-kazuar-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Kazuar_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c4456b1a-9a2d-5498-860f-aed8b8f72e28"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.kazuar"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.kazuar_auto.yar#L1-L115"
= "N/A"
= "f3465926116135563d59f857ea69bf0157f71e7ee10025cb20918f41dc519108"
= 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 = { 8b0402 4c01d8 eb07 48ffc3 }
$sequence_1 = { 5d 415c c3 4883ec48 e8???????? }
$sequence_2 = { 31c0 4885c9 4989cb 89d7 7463 }
$sequence_3 = { 8d8b00030000 894c2408 8d4b08 894c2404 }
$sequence_4 = { 7463 4863493c 4c01d9 8bb188000000 85f6 7452 }
$sequence_5 = { 740a 81ea00204000 01d0 eb02 31c0 5d c3 }
$sequence_6 = { 41ffc1 4131c0 4569c097010001 ebdd }
$sequence_7 = { 55 57 56 53 4883ec20 31c0 4885c9 }
$sequence_8 = { 4863493c 4c01d9 8bb188000000 85f6 }
$sequence_9 = { 8b10 894c2414 8d8b00020000 890424 894c2410 }
condition:
7 of them and filesize < 81920
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b0402 4c01d8 eb07 48ffc3 } | |
| $sequence_1 | hex | { 5d 415c c3 4883ec48 e8???????? } | |
| $sequence_2 | hex | { 31c0 4885c9 4989cb 89d7 7463 } | |
| $sequence_3 | hex | { 8d8b00030000 894c2408 8d4b08 894c2404 } | |
| $sequence_4 | hex | { 7463 4863493c 4c01d9 8bb188000000 85f6 7452 } | |
| $sequence_5 | hex | { 740a 81ea00204000 01d0 eb02 31c0 5d c3 } | |
| $sequence_6 | hex | { 41ffc1 4131c0 4569c097010001 ebdd } | |
| $sequence_7 | hex | { 55 57 56 53 4883ec20 31c0 4885c9 } | |
| $sequence_8 | hex | { 4863493c 4c01d9 8bb188000000 85f6 } | |
| $sequence_9 | hex | { 8b10 894c2414 8d8b00020000 890424 894c2410 } |
Condition
7 of them and filesize < 81920In plain words (Heuristic)
- The file must be smaller than 81920 (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: c4456b1a-9a2d-5498-860f-aed8b8f72e28
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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