YARA · Malpedia signator rules
MALPEDIA_Win_Hzrat_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: Hzrat.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-hzrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hzrat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "fc3df8bc-ec7a-56e4-b1ff-2aa1a378adac"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.hzrat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hzrat_auto.yar#L1-L128"
= "N/A"
= "6407ce8ac3e6295664c9580f0c55c2d3626eeae6cd31a1855374c5712853f375"
= 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 = { e8???????? e8???????? cc 55 8bec 8b450c 85c0 }
$sequence_1 = { 56 57 8d3c853cf64200 8b07 83ceff 3bc6 742b }
$sequence_2 = { cc 8bff 55 8bec 8b4d08 33c0 3b0cc5a0234200 }
$sequence_3 = { 3bc8 7654 51 0faee8 e8???????? }
$sequence_4 = { 0f47c1 8d4e2c 8945ec 40 50 e8???????? 8b4df0 }
$sequence_5 = { 0faee8 0fb67ee8 0fb642e8 2bf8 7410 33c9 85ff }
$sequence_6 = { 83e801 0f84ca0f0000 83e801 0f84a70f0000 }
$sequence_7 = { 66c785c4feffffbd42 e9???????? ffb584feffff ff9568feffff ffb588feffff 8bb58cfeffff 8bce }
$sequence_8 = { 8b45a8 8955dc 8945e8 8bf0 8d7dac 8b45e0 8945ec }
$sequence_9 = { 8b4dfc 894814 eb4d 0faee8 ff771c 53 }
condition:
7 of them and filesize < 409600
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? e8???????? cc 55 8bec 8b450c 85c0 } | |
| $sequence_1 | hex | { 56 57 8d3c853cf64200 8b07 83ceff 3bc6 742b } | |
| $sequence_2 | hex | { cc 8bff 55 8bec 8b4d08 33c0 3b0cc5a0234200 } | |
| $sequence_3 | hex | { 3bc8 7654 51 0faee8 e8???????? } | |
| $sequence_4 | hex | { 0f47c1 8d4e2c 8945ec 40 50 e8???????? 8b4df0 } | |
| $sequence_5 | hex | { 0faee8 0fb67ee8 0fb642e8 2bf8 7410 33c9 85ff } | |
| $sequence_6 | hex | { 83e801 0f84ca0f0000 83e801 0f84a70f0000 } | |
| $sequence_7 | hex | { 66c785c4feffffbd42 e9???????? ffb584feffff ff9568feffff ffb588feffff 8bb58cfeffff 8bce } | |
| $sequence_8 | hex | { 8b45a8 8955dc 8945e8 8bf0 8d7dac 8b45e0 8945ec } | |
| $sequence_9 | hex | { 8b4dfc 894814 eb4d 0faee8 ff771c 53 } |
Condition
7 of them and filesize < 409600In plain words (Heuristic)
- The file must be smaller than 409600 (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: fc3df8bc-ec7a-56e4-b1ff-2aa1a378adac
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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