YARA · Malpedia signator rules
MALPEDIA_Win_Hazy_Load_Auto
autogenerated rule brought to you by yara-signator
MalwareHazy LoadMalpedia 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: Hazy Load.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-hazy-load-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hazy_Load_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a350eaad-9bcb-5f5e-81a1-787050135b96"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.hazy_load"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hazy_load_auto.yar#L1-L116"
= "N/A"
= "6dd70fa7df72f7c4ea5416ccf00a68d1eab60e78bafa0a38a25801f23d6cb5fb"
= 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 = { 33c0 f04d0fb1bcf130100200 488bd8 740e }
$sequence_1 = { 488945f0 488d1594c40000 b805000000 894520 894528 }
$sequence_2 = { f00fc103 83f801 7516 488d05b5330100 488b4c2430 483bc8 7405 }
$sequence_3 = { 488b442448 4883f8ff 74c8 488bd3 4c8d05ceed0000 83e23f }
$sequence_4 = { 488d0d12c9ffff 4933f8 4a87bcf150100200 33c0 488b5c2450 488b6c2458 488b742460 }
$sequence_5 = { 8d41ff 8b8482f89e0100 85c0 0f8489000000 }
$sequence_6 = { 488d0d5beffeff 48c1e602 0fb784b9609e0100 488d9150950100 }
$sequence_7 = { 448bc7 4863c3 488d5504 442bc3 }
$sequence_8 = { 442bc3 4803d0 4533c9 488bce ff15???????? 85c0 0f8eacfeffff }
$sequence_9 = { eb75 4c8bf3 488d3513be0100 488d2df4bd0100 }
condition:
7 of them and filesize < 315392
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 33c0 f04d0fb1bcf130100200 488bd8 740e } | |
| $sequence_1 | hex | { 488945f0 488d1594c40000 b805000000 894520 894528 } | |
| $sequence_2 | hex | { f00fc103 83f801 7516 488d05b5330100 488b4c2430 483bc8 7405 } | |
| $sequence_3 | hex | { 488b442448 4883f8ff 74c8 488bd3 4c8d05ceed0000 83e23f } | |
| $sequence_4 | hex | { 488d0d12c9ffff 4933f8 4a87bcf150100200 33c0 488b5c2450 488b6c2458 488b742460 } | |
| $sequence_5 | hex | { 8d41ff 8b8482f89e0100 85c0 0f8489000000 } | |
| $sequence_6 | hex | { 488d0d5beffeff 48c1e602 0fb784b9609e0100 488d9150950100 } | |
| $sequence_7 | hex | { 448bc7 4863c3 488d5504 442bc3 } | |
| $sequence_8 | hex | { 442bc3 4803d0 4533c9 488bce ff15???????? 85c0 0f8eacfeffff } | |
| $sequence_9 | hex | { eb75 4c8bf3 488d3513be0100 488d2df4bd0100 } |
Condition
7 of them and filesize < 315392In plain words (Heuristic)
- The file must be smaller than 315392 (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: a350eaad-9bcb-5f5e-81a1-787050135b96
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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