YARA · Malpedia signator rules
MALPEDIA_Win_Owlproxy_Auto
autogenerated rule brought to you by yara-signator
MalwareOwlproxyMalpedia 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: Owlproxy.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-owlproxy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Owlproxy_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "5684dc95-0988-52a9-909a-4db2d57c015a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.owlproxy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.owlproxy_auto.yar#L1-L129"
= "N/A"
= "ed3b9dde81521d76dc0039fdf7cf9a4928868d68802b5ecde1d571015fe6a6fd"
= 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 = { 4883ec70 488b05???????? 4833c4 4889442468 4c8d4c2450 baffff0000 41b808000000 }
$sequence_1 = { ffc0 420fb61419 41ffc2 4232540eff 418851ff 48ffcf 7586 }
$sequence_2 = { 488b8d88000000 4885c9 7426 e8???????? 48c7858800000000000000 }
$sequence_3 = { ffc0 4d8d5201 413bc3 7cf2 458bc1 4c8d542420 66660f1f840000000000 }
$sequence_4 = { 6641898448b82c0300 ffc2 ebe2 8bd7 89542420 81fa01010000 }
$sequence_5 = { 483bf0 0f878c000000 4c8d7c2450 4c2bfe 483bdf 756d }
$sequence_6 = { e9???????? 488d8a20000000 e9???????? 488d8ae8000000 e9???????? 488d8a70000000 e9???????? }
$sequence_7 = { 66443920 7417 8b15???????? 488d0d28d90000 4c8bc3 ffca e8???????? }
$sequence_8 = { e8???????? eb75 4584c0 745b 4883fa08 7355 4c89742440 }
$sequence_9 = { 488d15752e0100 488bcf ff14c2 85c0 7438 488b442448 }
condition:
7 of them and filesize < 475136
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 4883ec70 488b05???????? 4833c4 4889442468 4c8d4c2450 baffff0000 41b808000000 } | |
| $sequence_1 | hex | { ffc0 420fb61419 41ffc2 4232540eff 418851ff 48ffcf 7586 } | |
| $sequence_2 | hex | { 488b8d88000000 4885c9 7426 e8???????? 48c7858800000000000000 } | |
| $sequence_3 | hex | { ffc0 4d8d5201 413bc3 7cf2 458bc1 4c8d542420 66660f1f840000000000 } | |
| $sequence_4 | hex | { 6641898448b82c0300 ffc2 ebe2 8bd7 89542420 81fa01010000 } | |
| $sequence_5 | hex | { 483bf0 0f878c000000 4c8d7c2450 4c2bfe 483bdf 756d } | |
| $sequence_6 | hex | { e9???????? 488d8a20000000 e9???????? 488d8ae8000000 e9???????? 488d8a70000000 e9???????? } | |
| $sequence_7 | hex | { 66443920 7417 8b15???????? 488d0d28d90000 4c8bc3 ffca e8???????? } | |
| $sequence_8 | hex | { e8???????? eb75 4584c0 745b 4883fa08 7355 4c89742440 } | |
| $sequence_9 | hex | { 488d15752e0100 488bcf ff14c2 85c0 7438 488b442448 } |
Condition
7 of them and filesize < 475136In plain words (Heuristic)
- The file must be smaller than 475136 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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: 5684dc95-0988-52a9-909a-4db2d57c015a
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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