YARA · Malpedia signator rules
MALPEDIA_Win_Onhat_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: Onhat.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-onhat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Onhat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "6dce6c1d-a93f-5ee5-a8df-5c366e8725c5"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.onhat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.onhat_auto.yar#L1-L119"
= "N/A"
= "5052a02b00a0f491dbaa34d01141432dea6bf40f962a86bc547bf1288bc0e657"
= 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 = { 53 68???????? e8???????? 8b44244c 83c42c }
$sequence_1 = { 6689442432 e8???????? 83c414 85c0 }
$sequence_2 = { 888c24a8010000 c68424a901000020 889424aa010000 c68424ac01000073 c68424ad01000020 c68424ae01000041 }
$sequence_3 = { b020 884c241a b253 b145 88442417 }
$sequence_4 = { e8???????? 85c0 7f0e 5f b803000080 5e 81c404010000 }
$sequence_5 = { c68424ed0000004e c68424ee00000054 c68424ef00000041 c68424f000000048 889c24f1000000 c68424f200000045 c68424f30000004e }
$sequence_6 = { 0f87bc010000 ff2485c8444000 8b542444 6685d2 }
$sequence_7 = { 81c40c010000 c3 8b842420010000 8b8c241c010000 25ffff0000 }
$sequence_8 = { 8d7c2409 88542408 f3ab 8b8c240c200000 88542406 66ab }
$sequence_9 = { c3 b814110000 e8???????? 8b8c2420110000 b8d34d6210 f7e1 }
condition:
7 of them and filesize < 57344
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 53 68???????? e8???????? 8b44244c 83c42c } | |
| $sequence_1 | hex | { 6689442432 e8???????? 83c414 85c0 } | |
| $sequence_2 | hex | { 888c24a8010000 c68424a901000020 889424aa010000 c68424ac01000073 c68424ad01000020 c68424ae01000041 } | |
| $sequence_3 | hex | { b020 884c241a b253 b145 88442417 } | |
| $sequence_4 | hex | { e8???????? 85c0 7f0e 5f b803000080 5e 81c404010000 } | |
| $sequence_5 | hex | { c68424ed0000004e c68424ee00000054 c68424ef00000041 c68424f000000048 889c24f1000000 c68424f200000045 c68424f30000004e } | |
| $sequence_6 | hex | { 0f87bc010000 ff2485c8444000 8b542444 6685d2 } | |
| $sequence_7 | hex | { 81c40c010000 c3 8b842420010000 8b8c241c010000 25ffff0000 } | |
| $sequence_8 | hex | { 8d7c2409 88542408 f3ab 8b8c240c200000 88542406 66ab } | |
| $sequence_9 | hex | { c3 b814110000 e8???????? 8b8c2420110000 b8d34d6210 f7e1 } |
Condition
7 of them and filesize < 57344In plain words (Heuristic)
- The file must be smaller than 57344 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 6dce6c1d-a93f-5ee5-a8df-5c366e8725c5
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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