YARA · Malpedia signator rules
MALPEDIA_Win_Himera_Loader_Auto
autogenerated rule brought to you by yara-signator
MalwareHimera LoaderMalpedia 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: Himera Loader.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-himera-loader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Himera_Loader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "aaafc79e-21a9-5fbe-be05-950c921e16fb"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.himera_loader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.himera_loader_auto.yar#L1-L121"
= "N/A"
= "c95cedbeeb5f742b1056f8097a9a669c5e53ab6bc28c56f35234b991823260d7"
= 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 = { 6a44 6a00 8d858482ffff 50 e8???????? 83c40c 33c9 }
$sequence_1 = { c645eb42 c645ec2e 64a12c000000 8b08 8b15???????? 3b9104000000 }
$sequence_2 = { c645e841 c645e940 c645ea00 c645eb4b c645ec56 }
$sequence_3 = { 8b4df0 8b048500a14200 807c012800 7d5d 8d45d8 50 }
$sequence_4 = { 3d75e7111a 750e 8b45e8 50 }
$sequence_5 = { 8b048d00a14200 33c9 41 897df0 894de0 8a543828 }
$sequence_6 = { c745e4503f4200 eb10 c745e4583f4200 eb07 c745e4443f4200 8b4508 8bcf }
$sequence_7 = { c1e200 8b4508 0fb70c10 51 e8???????? 83c408 8b55fc }
$sequence_8 = { e8???????? 83c410 ebb2 8b953482ffff 52 }
$sequence_9 = { 8d8d6c82ffff e8???????? 8bc8 e8???????? }
condition:
7 of them and filesize < 385024
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6a44 6a00 8d858482ffff 50 e8???????? 83c40c 33c9 } | |
| $sequence_1 | hex | { c645eb42 c645ec2e 64a12c000000 8b08 8b15???????? 3b9104000000 } | |
| $sequence_2 | hex | { c645e841 c645e940 c645ea00 c645eb4b c645ec56 } | |
| $sequence_3 | hex | { 8b4df0 8b048500a14200 807c012800 7d5d 8d45d8 50 } | |
| $sequence_4 | hex | { 3d75e7111a 750e 8b45e8 50 } | |
| $sequence_5 | hex | { 8b048d00a14200 33c9 41 897df0 894de0 8a543828 } | |
| $sequence_6 | hex | { c745e4503f4200 eb10 c745e4583f4200 eb07 c745e4443f4200 8b4508 8bcf } | |
| $sequence_7 | hex | { c1e200 8b4508 0fb70c10 51 e8???????? 83c408 8b55fc } | |
| $sequence_8 | hex | { e8???????? 83c410 ebb2 8b953482ffff 52 } | |
| $sequence_9 | hex | { 8d8d6c82ffff e8???????? 8bc8 e8???????? } |
Condition
7 of them and filesize < 385024In plain words (Heuristic)
- The file must be smaller than 385024 (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: aaafc79e-21a9-5fbe-be05-950c921e16fb
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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