YARA · Malpedia signator rules
MALPEDIA_Win_Redcurl_Auto
autogenerated rule brought to you by yara-signator
MalwareRedcurlMalpedia 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: Redcurl.
It defines 21 patterns (0 text, 21 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-redcurl-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Redcurl_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "0663e601-d8b5-50f4-b320-33a5dcee05d6"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.redcurl"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.redcurl_auto.yar#L1-L210"
= "N/A"
= "0491d2e009664a48ff3f0dfcc61ec94ae97a0faf3a36fbea7931e0940fef1d43"
= 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 = { ff15???????? 8bd0 c7461000000000 8bca c746140f000000 c60600 8d7901 }
$sequence_1 = { 2bc6 48 50 56 }
$sequence_2 = { f7f9 80c261 88143e 47 }
$sequence_3 = { 6a00 6a00 6aff 8bf8 6a00 57 ff15???????? }
$sequence_4 = { c745f001000000 e8???????? c745e800000000 c745ec0f000000 }
$sequence_5 = { c645d800 8d5001 8b4610 3bc2 }
$sequence_6 = { 8b4610 3bc2 726f 2bc2 83c9ff 83f8ff 0f42c8 }
$sequence_7 = { e8???????? 8d45d8 8bce 50 e8???????? 8b55ec 83fa10 }
$sequence_8 = { 0f57c0 c745e800000000 68???????? ba???????? 660fd645e0 e8???????? }
$sequence_9 = { 837d1c10 8d4d08 6a00 0f434d08 8bf0 6a00 }
$sequence_10 = { 750f d93c24 668b0424 6683e07f 6683f87f 8d642408 0f85e90b0000 }
$sequence_11 = { c20000 55 8bec 83ec0c 8d4df4 e8???????? }
$sequence_12 = { 6a00 50 53 ff15???????? 6a00 }
$sequence_13 = { 83c10f 83e1f0 85d2 0f8546ffffff }
$sequence_14 = { 3c30 0f84b6100000 3c31 0f85aed3ffff }
$sequence_15 = { e8???????? 8b8520fdffff 8d9d28fdffff 39d8 7408 890424 }
$sequence_16 = { 85f6 741a 0fb613 8810 f7c602000000 740d }
$sequence_17 = { e8???????? 89c7 8945d0 83f80f 0f8755060000 }
$sequence_18 = { 01d8 7408 85f6 0f8471170000 899d7cfdffff 83fb0f }
$sequence_19 = { 89c6 8b03 8d7e0c 85c0 }
$sequence_20 = { 8985e8fdffff 8d8568feffff 83ec08 898560feffff }
condition:
7 of them and filesize < 487424
}
Strings (21 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff15???????? 8bd0 c7461000000000 8bca c746140f000000 c60600 8d7901 } | |
| $sequence_1 | hex | { 2bc6 48 50 56 } | |
| $sequence_2 | hex | { f7f9 80c261 88143e 47 } | |
| $sequence_3 | hex | { 6a00 6a00 6aff 8bf8 6a00 57 ff15???????? } | |
| $sequence_4 | hex | { c745f001000000 e8???????? c745e800000000 c745ec0f000000 } | |
| $sequence_5 | hex | { c645d800 8d5001 8b4610 3bc2 } | |
| $sequence_6 | hex | { 8b4610 3bc2 726f 2bc2 83c9ff 83f8ff 0f42c8 } | |
| $sequence_7 | hex | { e8???????? 8d45d8 8bce 50 e8???????? 8b55ec 83fa10 } | |
| $sequence_8 | hex | { 0f57c0 c745e800000000 68???????? ba???????? 660fd645e0 e8???????? } | |
| $sequence_9 | hex | { 837d1c10 8d4d08 6a00 0f434d08 8bf0 6a00 } | |
| $sequence_10 | hex | { 750f d93c24 668b0424 6683e07f 6683f87f 8d642408 0f85e90b0000 } | |
| $sequence_11 | hex | { c20000 55 8bec 83ec0c 8d4df4 e8???????? } | |
| $sequence_12 | hex | { 6a00 50 53 ff15???????? 6a00 } | |
| $sequence_13 | hex | { 83c10f 83e1f0 85d2 0f8546ffffff } | |
| $sequence_14 | hex | { 3c30 0f84b6100000 3c31 0f85aed3ffff } | |
| $sequence_15 | hex | { e8???????? 8b8520fdffff 8d9d28fdffff 39d8 7408 890424 } | |
| $sequence_16 | hex | { 85f6 741a 0fb613 8810 f7c602000000 740d } | |
| $sequence_17 | hex | { e8???????? 89c7 8945d0 83f80f 0f8755060000 } | |
| $sequence_18 | hex | { 01d8 7408 85f6 0f8471170000 899d7cfdffff 83fb0f } | |
| $sequence_19 | hex | { 89c6 8b03 8d7e0c 85c0 } | |
| $sequence_20 | hex | { 8985e8fdffff 8d8568feffff 83ec08 898560feffff } |
Condition
7 of them and filesize < 487424In plain words (Heuristic)
- The file must be smaller than 487424 (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: 0663e601-d8b5-50f4-b320-33a5dcee05d6
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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