YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_045_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
It defines 8 patterns (0 text, 8 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-unidentified-045-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_045_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "40a40ddb-c11e-5d8c-8982-cd9cb4fd36c3"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_045"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_045_auto.yar#L1-L104"
= "N/A"
= "efeaa9798ec2b87dd7b8f92c23612419ddf67b2b001ffe8d91af2c86392a4770"
= 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 = { 8901 e8???????? a3???????? 6a02 53 8b4598 }
$sequence_1 = { 8d4dfc 51 6a28 50 8945f8 }
$sequence_2 = { eb3a 81f911111111 7507 a3???????? eb2b }
$sequence_3 = { 80f901 730a 51 8b4df8 d345fc 59 eb08 }
$sequence_4 = { 53 53 ffd7 8b4d70 ff4570 }
$sequence_5 = { 7434 40 8944240c bf???????? 381d???????? 7422 }
$sequence_6 = { 3c41 742c 3c42 7428 56 ff15???????? }
$sequence_7 = { 8945ac 0fb74606 6bc028 8dbc30f8000000 8d4f28 8b45dc }
condition:
7 of them and filesize < 73728
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8901 e8???????? a3???????? 6a02 53 8b4598 } | |
| $sequence_1 | hex | { 8d4dfc 51 6a28 50 8945f8 } | |
| $sequence_2 | hex | { eb3a 81f911111111 7507 a3???????? eb2b } | |
| $sequence_3 | hex | { 80f901 730a 51 8b4df8 d345fc 59 eb08 } | |
| $sequence_4 | hex | { 53 53 ffd7 8b4d70 ff4570 } | |
| $sequence_5 | hex | { 7434 40 8944240c bf???????? 381d???????? 7422 } | |
| $sequence_6 | hex | { 3c41 742c 3c42 7428 56 ff15???????? } | |
| $sequence_7 | hex | { 8945ac 0fb74606 6bc028 8dbc30f8000000 8d4f28 8b45dc } |
Condition
7 of them and filesize < 73728In plain words (Heuristic)
- The file must be smaller than 73728 (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: 40a40ddb-c11e-5d8c-8982-cd9cb4fd36c3
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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