YARA · Malpedia signator rules
MALPEDIA_Win_Ironhalo_Auto
autogenerated rule brought to you by yara-signator
MalwareIronhaloMalpedia 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: Ironhalo.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ironhalo-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ironhalo_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ff81555d-b057-5dc8-9c08-d50d0e39fa8f"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ironhalo"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ironhalo_auto.yar#L1-L124"
= "N/A"
= "b3c3267632db8fb73771a0962aa4b065de65cdb802cf4cd8562b60f577e6d53b"
= 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 = { 75f5 8d0c49 5e 8d0c8df0c14000 }
$sequence_1 = { 88442419 fec0 47 3c40 72f1 8a543102 32c0 }
$sequence_2 = { 68???????? 50 e8???????? 8bf0 83c408 85f6 7502 }
$sequence_3 = { fec0 47 3c40 72f1 8a5c3103 8a44241b }
$sequence_4 = { 6689542430 e8???????? 56 e8???????? 8a44242c 83c41c }
$sequence_5 = { 83c408 8944240c 85c0 7502 5e }
$sequence_6 = { b9???????? 8bc2 8bf2 c1f805 83e61f 8b048560e04000 8b04f0 }
$sequence_7 = { 51 e8???????? 83c408 8944240c 85c0 7502 5e }
$sequence_8 = { 7504 88442419 fec0 47 }
$sequence_9 = { 85f6 0f8426feffff 8b3d???????? c744241c01000000 8d4c241c 8d942430030000 51 }
condition:
7 of them and filesize < 131072
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 75f5 8d0c49 5e 8d0c8df0c14000 } | |
| $sequence_1 | hex | { 88442419 fec0 47 3c40 72f1 8a543102 32c0 } | |
| $sequence_2 | hex | { 68???????? 50 e8???????? 8bf0 83c408 85f6 7502 } | |
| $sequence_3 | hex | { fec0 47 3c40 72f1 8a5c3103 8a44241b } | |
| $sequence_4 | hex | { 6689542430 e8???????? 56 e8???????? 8a44242c 83c41c } | |
| $sequence_5 | hex | { 83c408 8944240c 85c0 7502 5e } | |
| $sequence_6 | hex | { b9???????? 8bc2 8bf2 c1f805 83e61f 8b048560e04000 8b04f0 } | |
| $sequence_7 | hex | { 51 e8???????? 83c408 8944240c 85c0 7502 5e } | |
| $sequence_8 | hex | { 7504 88442419 fec0 47 } | |
| $sequence_9 | hex | { 85f6 0f8426feffff 8b3d???????? c744241c01000000 8d4c241c 8d942430030000 51 } |
Condition
7 of them and filesize < 131072In plain words (Heuristic)
- The file must be smaller than 131072 (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: ff81555d-b057-5dc8-9c08-d50d0e39fa8f
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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