YARA · Malpedia signator rules
MALPEDIA_Win_Yibackdoor_Auto
autogenerated rule brought to you by yara-signator
MalwareYibackdoorMalpedia 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: Yibackdoor.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-yibackdoor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Yibackdoor_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "8381ad3f-144e-57bf-b1e0-596a16631421"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.yibackdoor"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.yibackdoor_auto.yar#L1-L133"
= "N/A"
= "d1e046cc1b955a806f4fd0e827829722c6add56dbc28052f2824eed9e402f3f3"
= 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 = { 84c9 75ef 458b4c1820 4d8bd8 418b741814 4c03cb 458bd6 }
$sequence_1 = { 418bd6 ffd0 3d02010000 752b 488b4d90 33d2 ff15???????? }
$sequence_2 = { 4883ec30 488bfa 418bf0 33d2 4c8bf1 33c9 }
$sequence_3 = { 488d4da0 33d2 e8???????? 33d2 895da0 33c9 448d4baa }
$sequence_4 = { 7406 8b4028 8945d7 44887c2420 c74424244632b25f c74424285f30c738 8b442424 }
$sequence_5 = { 488bc1 4885c9 7505 c3 4883c102 663911 75f7 }
$sequence_6 = { 488b15???????? 4803d7 48895110 488b09 e8???????? 488903 48897b08 }
$sequence_7 = { c74513ac2aba60 895517 4489451b 89451f 895523 44894527 89452b }
$sequence_8 = { e8???????? 488bd0 488d4c2438 e8???????? 488b4c2468 e8???????? 40887c2420 }
$sequence_9 = { 0f31 48c1e220 480bc2 8905???????? 488bcb 6901fd430300 bfc39e2600 }
condition:
7 of them and filesize < 147456
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 84c9 75ef 458b4c1820 4d8bd8 418b741814 4c03cb 458bd6 } | |
| $sequence_1 | hex | { 418bd6 ffd0 3d02010000 752b 488b4d90 33d2 ff15???????? } | |
| $sequence_2 | hex | { 4883ec30 488bfa 418bf0 33d2 4c8bf1 33c9 } | |
| $sequence_3 | hex | { 488d4da0 33d2 e8???????? 33d2 895da0 33c9 448d4baa } | |
| $sequence_4 | hex | { 7406 8b4028 8945d7 44887c2420 c74424244632b25f c74424285f30c738 8b442424 } | |
| $sequence_5 | hex | { 488bc1 4885c9 7505 c3 4883c102 663911 75f7 } | |
| $sequence_6 | hex | { 488b15???????? 4803d7 48895110 488b09 e8???????? 488903 48897b08 } | |
| $sequence_7 | hex | { c74513ac2aba60 895517 4489451b 89451f 895523 44894527 89452b } | |
| $sequence_8 | hex | { e8???????? 488bd0 488d4c2438 e8???????? 488b4c2468 e8???????? 40887c2420 } | |
| $sequence_9 | hex | { 0f31 48c1e220 480bc2 8905???????? 488bcb 6901fd430300 bfc39e2600 } |
Condition
7 of them and filesize < 147456In plain words (Heuristic)
- The file must be smaller than 147456 (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: 8381ad3f-144e-57bf-b1e0-596a16631421
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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