CelsiusCrypt21Z3r0

YARA detection rule by malware-lu · GPL-2.0

Rule CelsiusCrypt21Z3r0 (No description metadata provided).

import "pe"
rule CelsiusCrypt21Z3r0
{
      meta:
		author="malware-lu"
strings:
		$a0 = { 55 89 E5 83 EC 08 C7 04 24 01 00 00 00 FF 15 84 92 44 00 E8 C8 FE FF FF 90 8D B4 26 00 00 00 00 55 89 E5 83 EC 08 C7 04 24 02 00 00 00 FF 15 84 92 44 00 E8 A8 FE FF FF 90 8D B4 26 00 00 00 00 55 8B 0D C4 92 44 00 89 E5 5D FF E1 8D 74 26 00 55 8B 0D AC 92 44 00 89 E5 5D FF E1 90 90 90 90 55 89 E5 5D E9 77 C2 00 00 90 90 90 90 90 90 90 55 89 E5 83 EC 28 8B 45 10 89 04 24 E8 3F 14 01 00 48 89 45 FC 8B 45 0C 48 89 45 F4 8D 45 F4 89 44 24 04 8D 45 FC 89 04 24 E8 12 A3 03 00 8B 00 89 45 F8 8B 45 FC 89 45 F0 C6 45 EF 01 C7 45 E8 00 00 00 00 8B 45 E8 3B 45 F8 73 39 80 7D EF 00 74 33 8B 45 F0 89 44 24 04 8B 45 10 89 04 24 E8 1C 1A 01 00 89 C1 8B 45 08 8B 55 E8 01 C2 0F B6 01 3A 02 0F 94 C0 88 45 EF 8D 45 F0 FF 08 8D 45 E8 FF 00 EB BF 83 7D F0 00 74 34 80 7D EF 00 74 2E 8B 45 F0 89 44 24 04 8B 45 10 89 04 24 E8 DD 19 01 00 89 C1 8B 45 08 8B 55 F8 01 C2 0F B6 01 3A 02 0F 94 C0 88 45 EF 8D 45 F0 FF 08 EB C6 C7 44 24 04 00 00 00 00 8B 45 10 89 04 24 E8 AE 19 01 00 89 C1 8B 45 08 8B 55 F8 01 C2 0F B6 01 3A 02 7F 0C 0F B6 45 EF 83 E0 01 88 45 E7 EB 04 C6 45 E7 00 0F B6 45 E7 88 45 EF 0F B6 45 EF C9 C3 }
	$a1 = { 55 89 E5 83 EC 28 8B 45 10 89 04 24 E8 3F 14 01 00 48 89 45 FC 8B 45 0C 48 89 45 F4 8D 45 F4 89 44 24 04 8D 45 FC 89 04 24 E8 12 A3 03 00 8B 00 89 45 F8 8B 45 FC 89 45 F0 C6 45 EF 01 C7 45 E8 00 00 00 00 8B 45 E8 3B 45 F8 73 39 80 7D EF 00 74 33 8B 45 F0 89 44 24 04 8B 45 10 89 04 24 E8 1C 1A 01 00 89 C1 8B 45 08 8B 55 E8 01 C2 0F B6 01 3A 02 0F 94 C0 88 45 EF 8D 45 F0 FF 08 8D 45 E8 FF 00 EB BF 83 7D F0 00 74 34 80 7D EF 00 74 2E 8B 45 F0 89 44 24 04 8B 45 10 89 04 24 E8 DD 19 01 00 89 C1 8B 45 08 8B 55 F8 01 C2 0F B6 01 3A 02 0F 94 C0 88 45 EF 8D 45 F0 FF 08 EB C6 C7 44 24 04 00 00 00 00 8B 45 10 89 04 24 E8 AE 19 01 00 89 C1 8B 45 08 8B 55 F8 01 C2 0F B6 01 3A 02 7F 0C 0F B6 45 EF 83 E0 01 88 45 E7 EB 04 C6 45 E7 00 0F B6 45 E7 88 45 EF 0F B6 45 EF C9 C3 }

condition:
		$a0 at pe.entry_point or $a1
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

01ec2949-0747-421d-9deb-ea7a0b582a82

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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