YARA · Malpedia signator rules
MALPEDIA_Win_Redalpha_Auto
autogenerated rule brought to you by yara-signator
MalwareRedalphaMalpedia 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 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Redalpha.
It defines 31 patterns (0 text, 31 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-redalpha-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Redalpha_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "cd9045d7-f87a-592e-9809-e5720f592d0f"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.redalpha"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.redalpha_auto.yar#L1-L295"
= "N/A"
= "f85fca11ddb3d7432dacaec7cca79704d6819401bb8debb1c4167507085bc80d"
= 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 = { 50 e8???????? 83c40c c0e304 0fb6c3 50 }
$sequence_1 = { ba00010000 488d8d00010000 ff15???????? 488b8b38010000 }
$sequence_2 = { 8b4508 be00100000 89475c 8b978c000000 }
$sequence_3 = { 8b4508 c645fc06 85c0 753f 8d45e0 c745dcd4024300 }
$sequence_4 = { 8b4508 c1ee04 33f1 033cb0 }
$sequence_5 = { 8b4508 8d4dc4 53 8b5d10 }
$sequence_6 = { 4889742420 57 4881ec30040000 33f6 }
$sequence_7 = { 6690 39b42440040000 76b7 33d2 }
$sequence_8 = { 803831 0f8539020000 83bc248800000058 0f852b020000 4885c9 750f }
$sequence_9 = { 8b4508 898850030000 8b4508 59 c74048c8154400 }
$sequence_10 = { 83cdff 488bd9 4c8bfa 458bc2 4c637014 }
$sequence_11 = { 4155 4156 4157 8bb994000000 448bda 448b4944 }
$sequence_12 = { 730d 488b03 83780800 0f855dfeffff 8b8b18170000 }
$sequence_13 = { 488b0b ff15???????? 488b0b ff15???????? ffc7 }
$sequence_14 = { 8b4508 8bc8 83e03f c1f906 6bc030 03048d30284400 }
$sequence_15 = { 8b4508 8955fc 56 8bf1 57 bf01000000 85c0 }
$sequence_16 = { 50 64892500000000 ff7108 c701???????? ff15???????? }
$sequence_17 = { 8d1c3f 53 50 51 }
$sequence_18 = { c645fc01 8d5102 668b01 83c102 6685c0 75f5 2bca }
$sequence_19 = { 8d74242c 83c40c 33c9 8d5601 8a06 46 84c0 }
$sequence_20 = { 8945f4 8b4514 40 c745ec33374000 894df8 8945fc 64a100000000 }
$sequence_21 = { 68???????? 50 ffd7 8b5d08 8d85f4fbffff 8b35???????? }
$sequence_22 = { 50 e8???????? 8d842480140000 c74424443c000000 }
$sequence_23 = { c3 8bff 55 8bec 8b4d08 33c0 3b0cc5a8fc4000 }
$sequence_24 = { ffd6 8b45a0 85c0 7403 50 ffd6 85ff }
$sequence_25 = { 8b4308 2bc1 51 50 ff7658 8bce e8???????? }
$sequence_26 = { 6800040000 894608 e8???????? 53 8b1d???????? }
$sequence_27 = { ffd3 56 ffd3 ff742428 ffd3 8b8c246c180000 8bc7 }
$sequence_28 = { e8???????? 84c0 7508 83ceff e9???????? 6a00 }
$sequence_29 = { b9???????? c745fc00000000 8d5102 6690 }
$sequence_30 = { c1e902 50 f3a5 8d8574ffffff }
condition:
7 of them and filesize < 606208
}
Strings (31 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 50 e8???????? 83c40c c0e304 0fb6c3 50 } | |
| $sequence_1 | hex | { ba00010000 488d8d00010000 ff15???????? 488b8b38010000 } | |
| $sequence_2 | hex | { 8b4508 be00100000 89475c 8b978c000000 } | |
| $sequence_3 | hex | { 8b4508 c645fc06 85c0 753f 8d45e0 c745dcd4024300 } | |
| $sequence_4 | hex | { 8b4508 c1ee04 33f1 033cb0 } | |
| $sequence_5 | hex | { 8b4508 8d4dc4 53 8b5d10 } | |
| $sequence_6 | hex | { 4889742420 57 4881ec30040000 33f6 } | |
| $sequence_7 | hex | { 6690 39b42440040000 76b7 33d2 } | |
| $sequence_8 | hex | { 803831 0f8539020000 83bc248800000058 0f852b020000 4885c9 750f } | |
| $sequence_9 | hex | { 8b4508 898850030000 8b4508 59 c74048c8154400 } | |
| $sequence_10 | hex | { 83cdff 488bd9 4c8bfa 458bc2 4c637014 } | |
| $sequence_11 | hex | { 4155 4156 4157 8bb994000000 448bda 448b4944 } | |
| $sequence_12 | hex | { 730d 488b03 83780800 0f855dfeffff 8b8b18170000 } | |
| $sequence_13 | hex | { 488b0b ff15???????? 488b0b ff15???????? ffc7 } | |
| $sequence_14 | hex | { 8b4508 8bc8 83e03f c1f906 6bc030 03048d30284400 } | |
| $sequence_15 | hex | { 8b4508 8955fc 56 8bf1 57 bf01000000 85c0 } | |
| $sequence_16 | hex | { 50 64892500000000 ff7108 c701???????? ff15???????? } | |
| $sequence_17 | hex | { 8d1c3f 53 50 51 } | |
| $sequence_18 | hex | { c645fc01 8d5102 668b01 83c102 6685c0 75f5 2bca } | |
| $sequence_19 | hex | { 8d74242c 83c40c 33c9 8d5601 8a06 46 84c0 } | |
| $sequence_20 | hex | { 8945f4 8b4514 40 c745ec33374000 894df8 8945fc 64a100000000 } | |
| $sequence_21 | hex | { 68???????? 50 ffd7 8b5d08 8d85f4fbffff 8b35???????? } | |
| $sequence_22 | hex | { 50 e8???????? 8d842480140000 c74424443c000000 } | |
| $sequence_23 | hex | { c3 8bff 55 8bec 8b4d08 33c0 3b0cc5a8fc4000 } | |
| $sequence_24 | hex | { ffd6 8b45a0 85c0 7403 50 ffd6 85ff } | |
| $sequence_25 | hex | { 8b4308 2bc1 51 50 ff7658 8bce e8???????? } | |
| $sequence_26 | hex | { 6800040000 894608 e8???????? 53 8b1d???????? } | |
| $sequence_27 | hex | { ffd3 56 ffd3 ff742428 ffd3 8b8c246c180000 8bc7 } | |
| $sequence_28 | hex | { e8???????? 84c0 7508 83ceff e9???????? 6a00 } | |
| $sequence_29 | hex | { b9???????? c745fc00000000 8d5102 6690 } | |
| $sequence_30 | hex | { c1e902 50 f3a5 8d8574ffffff } |
Condition
7 of them and filesize < 606208In plain words (Heuristic)
- The file must be smaller than 606208 (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: cd9045d7-f87a-592e-9809-e5720f592d0f
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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