YARA · Malpedia signator rules
MALPEDIA_Win_Netspy_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: Netspy.
It defines 8 patterns (0 text, 8 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-netspy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Netspy_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "45bc7385-75c7-5d89-95c7-73989dd86c33"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.netspy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.netspy_auto.yar#L1-L107"
= "N/A"
= "e687b6fb39407430e86395d82e59b3f1e5f278922975f34f3274680e74dacd15"
= 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 = { e9???????? 488b85584c0000 8b10 488b85404c0000 8b08 }
$sequence_1 = { a801 0f8533000000 b810000000 e8???????? 4829c4 488b8508010000 4889e1 }
$sequence_2 = { 0f8505000000 e9???????? 8b85a0430000 8985b4140000 3da51c0a0c 0f8c64000000 8b85b4140000 }
$sequence_3 = { 8908 e9???????? 488b8530530000 0fbe00 89c1 83e120 83f020 }
$sequence_4 = { 3deafd16e5 0f846c250000 e9???????? 8b85340b0000 }
$sequence_5 = { 4829c4 488b85980c0000 4889e1 48898d20660000 488b8d20660000 c70163382994 e8???????? }
$sequence_6 = { 488b8518440000 488985703f0000 8b15???????? 833d????????0a 0f9cc0 89d1 81c1096040c4 }
$sequence_7 = { 488b8530150000 8908 e9???????? 488b8530150000 8b10 }
condition:
7 of them and filesize < 12033024
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e9???????? 488b85584c0000 8b10 488b85404c0000 8b08 } | |
| $sequence_1 | hex | { a801 0f8533000000 b810000000 e8???????? 4829c4 488b8508010000 4889e1 } | |
| $sequence_2 | hex | { 0f8505000000 e9???????? 8b85a0430000 8985b4140000 3da51c0a0c 0f8c64000000 8b85b4140000 } | |
| $sequence_3 | hex | { 8908 e9???????? 488b8530530000 0fbe00 89c1 83e120 83f020 } | |
| $sequence_4 | hex | { 3deafd16e5 0f846c250000 e9???????? 8b85340b0000 } | |
| $sequence_5 | hex | { 4829c4 488b85980c0000 4889e1 48898d20660000 488b8d20660000 c70163382994 e8???????? } | |
| $sequence_6 | hex | { 488b8518440000 488985703f0000 8b15???????? 833d????????0a 0f9cc0 89d1 81c1096040c4 } | |
| $sequence_7 | hex | { 488b8530150000 8908 e9???????? 488b8530150000 8b10 } |
Condition
7 of them and filesize < 12033024In plain words (Heuristic)
- The file must be smaller than 12033024 (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: 45bc7385-75c7-5d89-95c7-73989dd86c33
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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