YARA · Malpedia signator rules
MALPEDIA_Win_Rm3_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 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Rm3.
It defines 40 patterns (0 text, 40 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-rm3-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Rm3_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "55974a73-f2ee-57f4-9fb2-9af114dc90d9"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.rm3"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.rm3_auto.yar#L1-L372"
= "N/A"
= "1bed90ec4522c70ac09c22db83604c066c1ea6e59d91187470276c98decc4f24"
= 75
= 73
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 23d0 8b460c 03c2 394508 }
$sequence_1 = { 8b4138 8b5608 8d5410ff 48 f7d0 23d0 }
$sequence_2 = { 8d5418ff eb0a 8b4138 8b5608 }
$sequence_3 = { 8b00 51 03c2 50 e8???????? 83c40c }
$sequence_4 = { 03c8 0fb74106 8365f800 53 }
$sequence_5 = { 23fa 3bf8 7609 8b413c }
$sequence_6 = { 8d740818 8b4508 3b460c 7247 }
$sequence_7 = { 7505 3945fc 759f 5f 5e }
$sequence_8 = { 8db5f0feffff 8bce 8d041b 51 8945f8 e8???????? 57 }
$sequence_9 = { 41 ff4508 ff4d0c 885405fc 40 83f803 7ce4 }
$sequence_10 = { 83c704 83c604 837dfc00 75de 8d85f0feffff 50 }
$sequence_11 = { 50 8db4b558feffff 894510 56 8bc3 }
$sequence_12 = { 56 ff7510 8d8df4feffff 51 }
$sequence_13 = { 57 8bc3 8d8d58feffff e8???????? }
$sequence_14 = { 8bcb 8d9568ffffff 8bc6 e8???????? ebd2 }
$sequence_15 = { 50 e8???????? ff7518 8d85f0feffff ff750c 8d8d6cfeffff }
$sequence_16 = { e8???????? 483bc3 488bf8 7416 }
$sequence_17 = { eb8c ff15???????? 8bd8 4885ff 7412 488b0d???????? 4c8bc7 }
$sequence_18 = { 8803 4883c601 4883c301 4883ef01 75a0 }
$sequence_19 = { 754f 8d5001 8d480f e8???????? }
$sequence_20 = { 448be0 7476 4c8d6e78 498bcd e8???????? 488b4c2460 488b6e20 }
$sequence_21 = { 83e802 85c0 7e20 488d4c243c 8b01 4183c001 4883c104 }
$sequence_22 = { 488bf9 488d4c2450 498bd8 ff15???????? 4c8b1b 8364242800 4c015c2450 }
$sequence_23 = { e8???????? f7d0 31470c 488b0d???????? 4c8bc3 33d2 ff15???????? }
$sequence_24 = { 01ce 83f900 0f44f2 8b0e 83f900 }
$sequence_25 = { 894dec 8955e8 8975e4 8945e0 0f84f2000000 8b45f0 }
$sequence_26 = { 56 8985d0fbffff 8995ccfbffff 898dc8fbffff ffd7 83f800 }
$sequence_27 = { a1???????? 8b8de0fbffff 51 ffd0 8b0d???????? 8b95e4fbffff }
$sequence_28 = { 89c7 01f7 83c6c0 81fec00f0000 8945f4 894df0 }
$sequence_29 = { 8b8d60ffffff 83c101 8b954cffffff 83c228 8b75ac }
$sequence_30 = { 89b504ffffff e8???????? 8b854cffffff 890424 }
$sequence_31 = { c7424418180000 c7424800a00100 8b7de4 c787cc00000000000000 c787c800000000000000 }
$sequence_32 = { e8???????? 8d0db2318702 890424 894c2404 }
$sequence_33 = { 89442404 e8???????? 83c408 c785ecfbffff00000000 8d8decfbffff 8b15???????? }
$sequence_34 = { 891c24 89442404 c744240800000000 8954240c 8b4590 894d80 }
$sequence_35 = { 80fa00 8945f4 894df0 742f 8b45f4 8b4df0 8945ec }
$sequence_36 = { 894da4 8945a0 0f855affffff b801000000 8b4db0 8b11 }
$sequence_37 = { 6a50 68???????? 50 8985e8fbffff ffd1 8b0d???????? }
$sequence_38 = { 8b8d6cffffff 894c2404 898558ffffff e8???????? 83c408 b901000000 }
$sequence_39 = { b901000000 8d956cfdffff 891424 c74424040d000000 c744240801000000 }
condition:
7 of them and filesize < 221184
}
Strings (40 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 23d0 8b460c 03c2 394508 } | |
| $sequence_1 | hex | { 8b4138 8b5608 8d5410ff 48 f7d0 23d0 } | |
| $sequence_2 | hex | { 8d5418ff eb0a 8b4138 8b5608 } | |
| $sequence_3 | hex | { 8b00 51 03c2 50 e8???????? 83c40c } | |
| $sequence_4 | hex | { 03c8 0fb74106 8365f800 53 } | |
| $sequence_5 | hex | { 23fa 3bf8 7609 8b413c } | |
| $sequence_6 | hex | { 8d740818 8b4508 3b460c 7247 } | |
| $sequence_7 | hex | { 7505 3945fc 759f 5f 5e } | |
| $sequence_8 | hex | { 8db5f0feffff 8bce 8d041b 51 8945f8 e8???????? 57 } | |
| $sequence_9 | hex | { 41 ff4508 ff4d0c 885405fc 40 83f803 7ce4 } | |
| $sequence_10 | hex | { 83c704 83c604 837dfc00 75de 8d85f0feffff 50 } | |
| $sequence_11 | hex | { 50 8db4b558feffff 894510 56 8bc3 } | |
| $sequence_12 | hex | { 56 ff7510 8d8df4feffff 51 } | |
| $sequence_13 | hex | { 57 8bc3 8d8d58feffff e8???????? } | |
| $sequence_14 | hex | { 8bcb 8d9568ffffff 8bc6 e8???????? ebd2 } | |
| $sequence_15 | hex | { 50 e8???????? ff7518 8d85f0feffff ff750c 8d8d6cfeffff } | |
| $sequence_16 | hex | { e8???????? 483bc3 488bf8 7416 } | |
| $sequence_17 | hex | { eb8c ff15???????? 8bd8 4885ff 7412 488b0d???????? 4c8bc7 } | |
| $sequence_18 | hex | { 8803 4883c601 4883c301 4883ef01 75a0 } | |
| $sequence_19 | hex | { 754f 8d5001 8d480f e8???????? } | |
| $sequence_20 | hex | { 448be0 7476 4c8d6e78 498bcd e8???????? 488b4c2460 488b6e20 } | |
| $sequence_21 | hex | { 83e802 85c0 7e20 488d4c243c 8b01 4183c001 4883c104 } | |
| $sequence_22 | hex | { 488bf9 488d4c2450 498bd8 ff15???????? 4c8b1b 8364242800 4c015c2450 } | |
| $sequence_23 | hex | { e8???????? f7d0 31470c 488b0d???????? 4c8bc3 33d2 ff15???????? } | |
| $sequence_24 | hex | { 01ce 83f900 0f44f2 8b0e 83f900 } | |
| $sequence_25 | hex | { 894dec 8955e8 8975e4 8945e0 0f84f2000000 8b45f0 } | |
| $sequence_26 | hex | { 56 8985d0fbffff 8995ccfbffff 898dc8fbffff ffd7 83f800 } | |
| $sequence_27 | hex | { a1???????? 8b8de0fbffff 51 ffd0 8b0d???????? 8b95e4fbffff } | |
| $sequence_28 | hex | { 89c7 01f7 83c6c0 81fec00f0000 8945f4 894df0 } | |
| $sequence_29 | hex | { 8b8d60ffffff 83c101 8b954cffffff 83c228 8b75ac } | |
| $sequence_30 | hex | { 89b504ffffff e8???????? 8b854cffffff 890424 } | |
| $sequence_31 | hex | { c7424418180000 c7424800a00100 8b7de4 c787cc00000000000000 c787c800000000000000 } | |
| $sequence_32 | hex | { e8???????? 8d0db2318702 890424 894c2404 } | |
| $sequence_33 | hex | { 89442404 e8???????? 83c408 c785ecfbffff00000000 8d8decfbffff 8b15???????? } | |
| $sequence_34 | hex | { 891c24 89442404 c744240800000000 8954240c 8b4590 894d80 } | |
| $sequence_35 | hex | { 80fa00 8945f4 894df0 742f 8b45f4 8b4df0 8945ec } | |
| $sequence_36 | hex | { 894da4 8945a0 0f855affffff b801000000 8b4db0 8b11 } | |
| $sequence_37 | hex | { 6a50 68???????? 50 8985e8fbffff ffd1 8b0d???????? } | |
| $sequence_38 | hex | { 8b8d6cffffff 894c2404 898558ffffff e8???????? 83c408 b901000000 } | |
| $sequence_39 | hex | { b901000000 8d956cfdffff 891424 c74424040d000000 c744240801000000 } |
Condition
7 of them and filesize < 221184In plain words (Heuristic)
- The file must be smaller than 221184 (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: 55974a73-f2ee-57f4-9fb2-9af114dc90d9
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