YARA · Malpedia signator rules
MALPEDIA_Win_Quantloader_Auto
autogenerated rule brought to you by yara-signator
MalwareQuantloaderMalpedia 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: Quantloader.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-quantloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Quantloader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ae57b248-a53f-59f8-b81a-d804e5e3959c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.quantloader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.quantloader_auto.yar#L1-L171"
= "N/A"
= "cd92bfc2a3027ce29f376783c02426bf9e29d9f2b3e79e34d6d065800037bab5"
= 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 = { 890424 e8???????? 89c2 c744241000000000 8d45fc 8944240c }
$sequence_1 = { 890424 e8???????? 83ec04 c745f401000000 eb17 8b45f8 }
$sequence_2 = { 8b4510 8845ff c745f8ffffffff c745f400000000 817d08???????? 7470 }
$sequence_3 = { e8???????? 85c0 0f8512010000 c744240800000000 }
$sequence_4 = { e8???????? 83ec14 8d85d8f7ffff 890424 e8???????? }
$sequence_5 = { 890424 e8???????? 8d85f8fdffff 890424 e8???????? 0fb6c0 83f801 }
$sequence_6 = { 83ec08 8945ec 837dec00 750a e8???????? 8945f8 }
$sequence_7 = { c7442404???????? 8b4508 890424 e8???????? 89442408 c744240401000000 8b4508 }
$sequence_8 = { 59 8d442404 51 52 50 ff30 }
$sequence_9 = { 8b3424 b909000000 e8???????? 8bfe }
$sequence_10 = { 03c2 e2fc 59 c3 8b7d74 }
$sequence_11 = { 8900 e8???????? 58 ff6050 55 e8???????? }
$sequence_12 = { 48 7400 8bc1 59 }
$sequence_13 = { 6a08 ff551c 8bd8 54 53 ff5534 }
$sequence_14 = { 6a04 51 57 ff550c }
$sequence_15 = { ff550c ff550c 5a 59 58 58 85c9 }
condition:
7 of them and filesize < 155648
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 890424 e8???????? 89c2 c744241000000000 8d45fc 8944240c } | |
| $sequence_1 | hex | { 890424 e8???????? 83ec04 c745f401000000 eb17 8b45f8 } | |
| $sequence_2 | hex | { 8b4510 8845ff c745f8ffffffff c745f400000000 817d08???????? 7470 } | |
| $sequence_3 | hex | { e8???????? 85c0 0f8512010000 c744240800000000 } | |
| $sequence_4 | hex | { e8???????? 83ec14 8d85d8f7ffff 890424 e8???????? } | |
| $sequence_5 | hex | { 890424 e8???????? 8d85f8fdffff 890424 e8???????? 0fb6c0 83f801 } | |
| $sequence_6 | hex | { 83ec08 8945ec 837dec00 750a e8???????? 8945f8 } | |
| $sequence_7 | hex | { c7442404???????? 8b4508 890424 e8???????? 89442408 c744240401000000 8b4508 } | |
| $sequence_8 | hex | { 59 8d442404 51 52 50 ff30 } | |
| $sequence_9 | hex | { 8b3424 b909000000 e8???????? 8bfe } | |
| $sequence_10 | hex | { 03c2 e2fc 59 c3 8b7d74 } | |
| $sequence_11 | hex | { 8900 e8???????? 58 ff6050 55 e8???????? } | |
| $sequence_12 | hex | { 48 7400 8bc1 59 } | |
| $sequence_13 | hex | { 6a08 ff551c 8bd8 54 53 ff5534 } | |
| $sequence_14 | hex | { 6a04 51 57 ff550c } | |
| $sequence_15 | hex | { ff550c ff550c 5a 59 58 58 85c9 } |
Condition
7 of them and filesize < 155648In plain words (Heuristic)
- The file must be smaller than 155648 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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: ae57b248-a53f-59f8-b81a-d804e5e3959c
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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