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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:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0663e601-d8b5-50f4-b320-33a5dcee05d6"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.redcurl"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.redcurl_auto.yar#L1-L210"
		license_url = "N/A"
		logic_hash = "0491d2e009664a48ff3f0dfcc61ec94ae97a0faf3a36fbea7931e0940fef1d43"
		score = 75
		quality = 73
		tags = "FILE"
		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"

	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)

IdentifierTypeValueModifiers
$sequence_0hex{ ff15???????? 8bd0 c7461000000000 8bca c746140f000000 c60600 8d7901 }
$sequence_1hex{ 2bc6 48 50 56 }
$sequence_2hex{ f7f9 80c261 88143e 47 }
$sequence_3hex{ 6a00 6a00 6aff 8bf8 6a00 57 ff15???????? }
$sequence_4hex{ c745f001000000 e8???????? c745e800000000 c745ec0f000000 }
$sequence_5hex{ c645d800 8d5001 8b4610 3bc2 }
$sequence_6hex{ 8b4610 3bc2 726f 2bc2 83c9ff 83f8ff 0f42c8 }
$sequence_7hex{ e8???????? 8d45d8 8bce 50 e8???????? 8b55ec 83fa10 }
$sequence_8hex{ 0f57c0 c745e800000000 68???????? ba???????? 660fd645e0 e8???????? }
$sequence_9hex{ 837d1c10 8d4d08 6a00 0f434d08 8bf0 6a00 }
$sequence_10hex{ 750f d93c24 668b0424 6683e07f 6683f87f 8d642408 0f85e90b0000 }
$sequence_11hex{ c20000 55 8bec 83ec0c 8d4df4 e8???????? }
$sequence_12hex{ 6a00 50 53 ff15???????? 6a00 }
$sequence_13hex{ 83c10f 83e1f0 85d2 0f8546ffffff }
$sequence_14hex{ 3c30 0f84b6100000 3c31 0f85aed3ffff }
$sequence_15hex{ e8???????? 8b8520fdffff 8d9d28fdffff 39d8 7408 890424 }
$sequence_16hex{ 85f6 741a 0fb613 8810 f7c602000000 740d }
$sequence_17hex{ e8???????? 89c7 8945d0 83f80f 0f8755060000 }
$sequence_18hex{ 01d8 7408 85f6 0f8471170000 899d7cfdffff 83fb0f }
$sequence_19hex{ 89c6 8b03 8d7e0c 85c0 }
$sequence_20hex{ 8985e8fdffff 8d8568feffff 83ec08 898560feffff }

Condition

7 of them and filesize < 487424

In 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.

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References

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)

Original rule

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

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE