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YARA · Volexity threat-intel

VOLEXITY_Apt_Malware_Win_Lightspy_Orchestrator_Decoded_Core

Detects the decoded orchestrator for the Windows variant of the LightSpy malware family. This file is normally stored in an encoded state on the C2 server and is used as the core component of this malware family, loading additional plugins from the C2 whilst managing all the C2 communication etc.

APT / actorVolexity threat-intelBSD 2-Clause LicenseCompila con YARA-X
Autor
threatintel@volexity.com
Fecha
2024-02-15
Modificada
2024-07-03
Puntuación / Calidad
75 / 78

Qué detecta esta regla

Detects the decoded orchestrator for the Windows variant of the LightSpy malware family. This file is normally stored in an encoded state on the C2 server and is used as the core component of this malware family, loading additional plugins from the C2 whilst managing all the C2 communication etc.

Define 21 patrones (21 de texto, 0 hex, 0 regex).

Resumen generado a partir de los metadatos y la condición de la regla.

Código de la regla

apt-malware-win-lightspy-orchestrator-decoded-core.yarBSD 2-Clause License
rule VOLEXITY_Apt_Malware_Win_Lightspy_Orchestrator_Decoded_Core : BRAZENBAMBOO FILE MEMORY
{
	meta:
		description = "Detects the decoded orchestrator for the Windows variant of the LightSpy malware family. This file is normally stored in an encoded state on the C2 server and is used as the core component of this malware family, loading additional plugins from the C2 whilst managing all the C2 communication etc."
		author = "threatintel@volexity.com"
		id = "44f8d7a4-7f48-5960-91a7-baf475f7d291"
		date = "2024-02-15"
		modified = "2024-07-03"
		reference = "https://github.com/volexity/threat-intel"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-11-15 BrazenBamboo/rules.yar#L244-L287"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "80c0cdb1db961c76de7e4efb6aced8a52cd0e34178660ef34c128be5f0d587df"
		logic_hash = "f0189c0a84c53e365130e9683f2f2b2f73c14412d8e4d0251a4780d0e80162d8"
		score = 75
		quality = 78
		tags = "BRAZENBAMBOO, FILE, MEMORY"
		os = "win"
		os_arch = "all"
		scan_context = "file,memory"
		severity = "critical"
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
		rule_id = 10246
		version = 2

	strings:
		$s1 = "Enter RunWork......."
		$s2 = "it's running......."
		$s3 = "select ret = socket_error."
		$s4 = "%s\\\\account.bin"
		$s5 = "[CtrlLink]: get machine sn err:%d"
		$s6 = "wmic path Win32_VideoController get CurrentHorizontalResolution,CurrentVerticalResolution /format:list | findstr /v \\\"^$\\\""
		$s7 = "wmic csproduct get vendor,version /format:list | findstr /v \\\"^$\\\""
		$s8 = "local ip get sockname error=%d"
		$s9 = "connect goole dns error=%d"
		$s10 = "%s/api/terminal/upsert/"
		$s11 = "/963852741/windows/plugin/manifest"
		$s12 = "Hello deepdata."
		$s13 = "Start Light."
		$s14 = "InitialPluginManager Error."
		$s15 = "InitialCommandExe Error."
		$s16 = "ws open, and send logon info."
		$s17 = "plugin_replay_handler"
		$s18 = "light_x86.dll"
		$pdb1 = "\\light\\bin\\light_x86.pdb"
		$pdb2 = "\\light\\bin\\plugin"
		$pdb3 = "D:\\tmpWork\\"

	condition:
		1 of ( $pdb* ) or 5 of ( $s* )
}

Cadenas (21 patrones)

IdentificadorTipoValorModificadores
$s1texto"Enter RunWork......."
$s2texto"it's running......."
$s3texto"select ret = socket_error."
$s4texto"%s\\\\account.bin"
$s5texto"[CtrlLink]: get machine sn err:%d"
$s6texto"wmic path Win32_VideoController get CurrentHorizontalResolution,CurrentVerticalResolution /format:list | findstr /v \\\"^$\\\""
$s7texto"wmic csproduct get vendor,version /format:list | findstr /v \\\"^$\\\""
$s8texto"local ip get sockname error=%d"
$s9texto"connect goole dns error=%d"
$s10texto"%s/api/terminal/upsert/"
$s11texto"/963852741/windows/plugin/manifest"
$s12texto"Hello deepdata."
$s13texto"Start Light."
$s14texto"InitialPluginManager Error."
$s15texto"InitialCommandExe Error."
$s16texto"ws open, and send logon info."
$s17texto"plugin_replay_handler"
$s18texto"light_x86.dll"
$pdb1texto"\\light\\bin\\light_x86.pdb"
$pdb2texto"\\light\\bin\\plugin"
$pdb3texto"D:\\tmpWork\\"

Condición

1 of ( $pdb* ) or 5 of ( $s* )

En palabras sencillas (Heurística)

  • Deben coincidir al menos 1 patrones de ( $pdb* ).
  • Deben coincidir al menos 5 patrones de ( $s* ).

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Referencias

Hashes de muestras

Hashes de las muestras que el autor lista en los metadatos de la regla (búscalos en tu plataforma de threat intelligence).

  • 80c0cdb1db961c76de7e4efb6aced8a52cd0e34178660ef34c128be5f0d587df

Licencia y atribución

Autor: threatintel@volexity.com

Repositorio de origen: Volexity threat-intel @ 3a9d0b5245

Licencia: BSD 2-Clause License (indicada en los metadatos de la regla)

“See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt”

Aviso de copyright: Copyright 2022 by Volexity, Inc.

Regla original

Obtenida a través de YARA Forge 20260927, que añade a los nombres el prefijo de la fuente y campos meta normalizados.

Id de la regla: 44f8d7a4-7f48-5960-91a7-baf475f7d291

Metadatos

oswin
os_archall
scan_contextfile,memory
severitycritical
rule_id10246
version2

Etiquetas:BRAZENBAMBOOFILEMEMORY