YARA · Malpedia signator rules
MALPEDIA_Win_Xsplus_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: Xsplus.
It defines 17 patterns (0 text, 17 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-xsplus-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Xsplus_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3f0d7ffb-6d2b-54bb-93e8-b91caf3d74ed"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.xsplus"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.xsplus_auto.yar#L1-L173"
= "N/A"
= "d1e503d1ee9e4435450731001eb709a9b8a9f116bfcacb3f4b0a409fd6faef6b"
= 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 = { 8b761c 8b4608 8b7e20 8b36 66394f18 }
$sequence_1 = { 39b810a84000 0f8491000000 ff45e4 83c030 }
$sequence_2 = { 8945fc 837dfc00 7502 eb4c }
$sequence_3 = { 8b8db4fdffff 81e9cd860100 898db4fdffff 83bdb4fdffff03 0f87c5000000 }
$sequence_4 = { 83c201 8955f8 8b4514 8945f4 8b4df4 83c101 }
$sequence_5 = { 8985e8fdffff 83bde8fdffff00 0f8c9d000000 8b5508 }
$sequence_6 = { ff15???????? 83c408 85c0 7463 8b4d08 51 ff15???????? }
$sequence_7 = { 8b4508 0345fc 8a08 880a c745f800000000 }
$sequence_8 = { 8945f4 8b55fc 8b02 8b4dfc 51 ff5008 }
$sequence_9 = { 8955e4 8b45e4 3b45d8 0f8d24010000 8b4de4 }
$sequence_10 = { ff15???????? c745e0b4924000 c745dc58020000 8d55d4 52 6a00 6860100000 }
$sequence_11 = { b801000000 e9???????? 6a00 ff15???????? b801000000 }
$sequence_12 = { 8b55c8 52 e8???????? 83c408 85c0 0f85f8000000 }
$sequence_13 = { 8b85a8feffff 898590feffff 8b8d90feffff 51 }
$sequence_14 = { 8bec 81ec2c050000 57 c785f0fdffff04010000 }
$sequence_15 = { c74668e0a34000 6a0d e8???????? 59 }
$sequence_16 = { 8b5118 c1ea10 8b4508 8910 8be5 5d c20800 }
condition:
7 of them and filesize < 597872
}
Strings (17 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b761c 8b4608 8b7e20 8b36 66394f18 } | |
| $sequence_1 | hex | { 39b810a84000 0f8491000000 ff45e4 83c030 } | |
| $sequence_2 | hex | { 8945fc 837dfc00 7502 eb4c } | |
| $sequence_3 | hex | { 8b8db4fdffff 81e9cd860100 898db4fdffff 83bdb4fdffff03 0f87c5000000 } | |
| $sequence_4 | hex | { 83c201 8955f8 8b4514 8945f4 8b4df4 83c101 } | |
| $sequence_5 | hex | { 8985e8fdffff 83bde8fdffff00 0f8c9d000000 8b5508 } | |
| $sequence_6 | hex | { ff15???????? 83c408 85c0 7463 8b4d08 51 ff15???????? } | |
| $sequence_7 | hex | { 8b4508 0345fc 8a08 880a c745f800000000 } | |
| $sequence_8 | hex | { 8945f4 8b55fc 8b02 8b4dfc 51 ff5008 } | |
| $sequence_9 | hex | { 8955e4 8b45e4 3b45d8 0f8d24010000 8b4de4 } | |
| $sequence_10 | hex | { ff15???????? c745e0b4924000 c745dc58020000 8d55d4 52 6a00 6860100000 } | |
| $sequence_11 | hex | { b801000000 e9???????? 6a00 ff15???????? b801000000 } | |
| $sequence_12 | hex | { 8b55c8 52 e8???????? 83c408 85c0 0f85f8000000 } | |
| $sequence_13 | hex | { 8b85a8feffff 898590feffff 8b8d90feffff 51 } | |
| $sequence_14 | hex | { 8bec 81ec2c050000 57 c785f0fdffff04010000 } | |
| $sequence_15 | hex | { c74668e0a34000 6a0d e8???????? 59 } | |
| $sequence_16 | hex | { 8b5118 c1ea10 8b4508 8910 8be5 5d c20800 } |
Condition
7 of them and filesize < 597872In plain words (Heuristic)
- The file must be smaller than 597872 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 3f0d7ffb-6d2b-54bb-93e8-b91caf3d74ed
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
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04