YARA · Malpedia signator rules
MALPEDIA_Win_Norobot_Auto
autogenerated rule brought to you by yara-signator
MalwareNorobotMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- 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: Norobot.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-norobot-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Norobot_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d64f00eb-ea09-58b8-8deb-e767f434adae"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.norobot"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.norobot_auto.yar#L1-L126"
= "N/A"
= "301bc368a5f3a3efd68d3ce5fddd9c6ac9a49ce5d23ceec5450ce7bae0f401cc"
= 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 = { 8945d0 7413 8b04ca 488d15298cfdff 4803c2 }
$sequence_1 = { 4c8bda 488bf9 f6c304 7424 410fb60a 83e10f 4a0fbe843160b80200 }
$sequence_2 = { 7706 ff15???????? 488364243000 488d0ddcc60000 8364242800 41b803000000 4533c9 }
$sequence_3 = { 488bb424a0000000 4c8d159b6a0100 4533db 488d3d09e60000 4d85c9 488bc2 4c8be2 }
$sequence_4 = { e8???????? 4889842488000000 488d8c24a8000000 e8???????? 488b8c2488000000 4803c8 }
$sequence_5 = { 4883c807 4889442428 488b442460 4839442428 7607 }
$sequence_6 = { 488b4c2458 ff15???????? 4889442450 48837c245000 7536 488d1540150300 }
$sequence_7 = { 7502 eb26 baffffffff 488b4c2450 ff15???????? 488b4c2450 }
$sequence_8 = { 4c8d0540effeff 4a0fbe840160b80200 420fb68c0170b80200 482bd0 8b42fc d3e8 898424c0000000 }
$sequence_9 = { 48896c2418 57 4883ec20 4863d9 488d0d076c0100 488bd3 }
condition:
7 of them and filesize < 545792
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8945d0 7413 8b04ca 488d15298cfdff 4803c2 } | |
| $sequence_1 | hex | { 4c8bda 488bf9 f6c304 7424 410fb60a 83e10f 4a0fbe843160b80200 } | |
| $sequence_2 | hex | { 7706 ff15???????? 488364243000 488d0ddcc60000 8364242800 41b803000000 4533c9 } | |
| $sequence_3 | hex | { 488bb424a0000000 4c8d159b6a0100 4533db 488d3d09e60000 4d85c9 488bc2 4c8be2 } | |
| $sequence_4 | hex | { e8???????? 4889842488000000 488d8c24a8000000 e8???????? 488b8c2488000000 4803c8 } | |
| $sequence_5 | hex | { 4883c807 4889442428 488b442460 4839442428 7607 } | |
| $sequence_6 | hex | { 488b4c2458 ff15???????? 4889442450 48837c245000 7536 488d1540150300 } | |
| $sequence_7 | hex | { 7502 eb26 baffffffff 488b4c2450 ff15???????? 488b4c2450 } | |
| $sequence_8 | hex | { 4c8d0540effeff 4a0fbe840160b80200 420fb68c0170b80200 482bd0 8b42fc d3e8 898424c0000000 } | |
| $sequence_9 | hex | { 48896c2418 57 4883ec20 4863d9 488d0d076c0100 488bd3 } |
Condition
7 of them and filesize < 545792In plain words (Heuristic)
- The file must be smaller than 545792 (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: d64f00eb-ea09-58b8-8deb-e767f434adae
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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