YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_087_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 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-unidentified-087-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_087_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e0393d3c-afd5-55e5-83bc-a6ecb5781a61"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_087"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_087_auto.yar#L1-L171"
= "N/A"
= "b93a8e88d597aee090f71e856059643fefb0e2359d012ce6c32dd3dedf782b28"
= 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 = { 488bfa ff15???????? ffc0 4863d0 }
$sequence_1 = { 488d4d20 e8???????? 90 4883bd9800000010 720c 488b8d80000000 }
$sequence_2 = { 33c0 498bce 488bfb 66f2af 48f7d1 4c8d41ff 488bd3 }
$sequence_3 = { 41b802000000 48c744245007000000 4c89742448 664489742438 e8???????? }
$sequence_4 = { eb1a 4d85f6 7515 4c897310 }
$sequence_5 = { 488bc8 4c8d442460 418d542428 ff15???????? 85c0 745f 4c8d4574 }
$sequence_6 = { eb03 498bc6 803c303d 0f84be010000 4883f910 7205 498b06 }
$sequence_7 = { 0f84bf010000 48895c2420 4d8bcd 4d8bc4 }
$sequence_8 = { 33c0 e9???????? 8975e4 33c0 39b8a0080210 0f8491000000 ff45e4 }
$sequence_9 = { bf0f000000 8bc6 897c2430 895c242c }
$sequence_10 = { 83ec1c 8bcc 89a520feffff 33db }
$sequence_11 = { c745fc01000000 e9???????? 8b11 8b421c ffd0 c745fc01000000 eb74 }
$sequence_12 = { 2d08030000 7435 83e805 0f8510010000 }
$sequence_13 = { 57 83c170 e8???????? 57 e8???????? 83c404 }
$sequence_14 = { 03f7 c745f001000000 e8???????? 6a20 8d5f10 56 895e38 }
$sequence_15 = { 52 8d8da4feffff 51 a3???????? 33db c785a4feffff01000600 }
condition:
7 of them and filesize < 462848
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 488bfa ff15???????? ffc0 4863d0 } | |
| $sequence_1 | hex | { 488d4d20 e8???????? 90 4883bd9800000010 720c 488b8d80000000 } | |
| $sequence_2 | hex | { 33c0 498bce 488bfb 66f2af 48f7d1 4c8d41ff 488bd3 } | |
| $sequence_3 | hex | { 41b802000000 48c744245007000000 4c89742448 664489742438 e8???????? } | |
| $sequence_4 | hex | { eb1a 4d85f6 7515 4c897310 } | |
| $sequence_5 | hex | { 488bc8 4c8d442460 418d542428 ff15???????? 85c0 745f 4c8d4574 } | |
| $sequence_6 | hex | { eb03 498bc6 803c303d 0f84be010000 4883f910 7205 498b06 } | |
| $sequence_7 | hex | { 0f84bf010000 48895c2420 4d8bcd 4d8bc4 } | |
| $sequence_8 | hex | { 33c0 e9???????? 8975e4 33c0 39b8a0080210 0f8491000000 ff45e4 } | |
| $sequence_9 | hex | { bf0f000000 8bc6 897c2430 895c242c } | |
| $sequence_10 | hex | { 83ec1c 8bcc 89a520feffff 33db } | |
| $sequence_11 | hex | { c745fc01000000 e9???????? 8b11 8b421c ffd0 c745fc01000000 eb74 } | |
| $sequence_12 | hex | { 2d08030000 7435 83e805 0f8510010000 } | |
| $sequence_13 | hex | { 57 83c170 e8???????? 57 e8???????? 83c404 } | |
| $sequence_14 | hex | { 03f7 c745f001000000 e8???????? 6a20 8d5f10 56 895e38 } | |
| $sequence_15 | hex | { 52 8d8da4feffff 51 a3???????? 33db c785a4feffff01000600 } |
Condition
7 of them and filesize < 462848In plain words (Heuristic)
- The file must be smaller than 462848 (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: e0393d3c-afd5-55e5-83bc-a6ecb5781a61
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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