YARA · Malpedia signator rules
MALPEDIA_Win_Qhost_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: Qhost.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-qhost-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Qhost_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "2a91b9f4-4fa5-5bef-a29f-da74de42d2bb"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.qhost"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.qhost_auto.yar#L1-L122"
= "N/A"
= "712edc3e0d2985e51e1a3a002725c99a2510e16d8bf9ecc0d7add8c13fd2f745"
= 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 = { 66c745e80200 8b4508 8945ec 668b4d0c 66894dea }
$sequence_1 = { 6a04 8d55f0 52 6a07 8b4508 50 }
$sequence_2 = { 50 68???????? 68???????? 680f270000 68???????? }
$sequence_3 = { 7430 6a00 6a02 8d55f8 52 6a23 ff55fc }
$sequence_4 = { 6804010000 8d85f4fdffff 50 8b8decfcffff 51 ff15???????? }
$sequence_5 = { 8985ecfcffff 6804010000 6a00 8d85f4fdffff }
$sequence_6 = { e8???????? 83c404 e9???????? 83bd68ffffff06 7536 83bd6cffffff00 752d }
$sequence_7 = { 52 8b45fc 50 ff15???????? eb4a }
$sequence_8 = { 8b8ddcfdffff 51 ff15???????? 83c404 8b95ecfdffff 52 e8???????? }
$sequence_9 = { 50 6800040000 8d8d00fcffff 51 8b95c8fbffff 52 }
condition:
7 of them and filesize < 286720
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 66c745e80200 8b4508 8945ec 668b4d0c 66894dea } | |
| $sequence_1 | hex | { 6a04 8d55f0 52 6a07 8b4508 50 } | |
| $sequence_2 | hex | { 50 68???????? 68???????? 680f270000 68???????? } | |
| $sequence_3 | hex | { 7430 6a00 6a02 8d55f8 52 6a23 ff55fc } | |
| $sequence_4 | hex | { 6804010000 8d85f4fdffff 50 8b8decfcffff 51 ff15???????? } | |
| $sequence_5 | hex | { 8985ecfcffff 6804010000 6a00 8d85f4fdffff } | |
| $sequence_6 | hex | { e8???????? 83c404 e9???????? 83bd68ffffff06 7536 83bd6cffffff00 752d } | |
| $sequence_7 | hex | { 52 8b45fc 50 ff15???????? eb4a } | |
| $sequence_8 | hex | { 8b8ddcfdffff 51 ff15???????? 83c404 8b95ecfdffff 52 e8???????? } | |
| $sequence_9 | hex | { 50 6800040000 8d8d00fcffff 51 8b95c8fbffff 52 } |
Condition
7 of them and filesize < 286720In plain words (Heuristic)
- The file must be smaller than 286720 (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: 2a91b9f4-4fa5-5bef-a29f-da74de42d2bb
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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