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DITEKSHEN_MALWARE_Win_Meteorite

Detects Meteorite downloader

MalwareMeteoriteditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects Meteorite downloader

Associated malware family: Meteorite.

Targets: Windows PE.

It defines 9 patterns (9 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-meteorite.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Meteorite : FILE
{
	meta:
		description = "Detects Meteorite downloader"
		author = "ditekSHen"
		id = "ce7a72ce-56a8-5def-a952-f0b08efe8a4a"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L5093-L5109"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "0ae8183d949046be4257b48571a266f2501d60dd302f511ca1a2d518884e6a7f"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$x1 = "MeteoriteDownloader" fullword ascii wide
		$x2 = "Meteorite Downloader" fullword ascii wide
		$x3 = "Meteorite Downloader v" wide
		$s1 = "regwrite" fullword wide
		$s2 = "urlmon" fullword ascii
		$s3 = "wscript.shell" fullword wide
		$s4 = "modMain" fullword ascii
		$s5 = "VBA6.DLL" fullword ascii
		$s6 = "^_http" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( 1 of ( $x* ) or ( 5 of ( $s* ) ) )
}

Strings (9 patterns)

IdentifierTypeValueModifiers
$x1text"MeteoriteDownloader"fullword ascii wide
$x2text"Meteorite Downloader"fullword ascii wide
$x3text"Meteorite Downloader v"wide
$s1text"regwrite"fullword wide
$s2text"urlmon"fullword ascii
$s3text"wscript.shell"fullword wide
$s4text"modMain"fullword ascii
$s5text"VBA6.DLL"fullword ascii
$s6text"^_http"ascii

Condition

uint16( 0 ) == 0x5a4d and ( 1 of ( $x* ) or ( 5 of ( $s* ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 1 patterns in ( $x* ) must match.
  • At least 5 patterns in ( $s* ) must match.

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References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: ce7a72ce-56a8-5def-a952-f0b08efe8a4a

Tags:FILE

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