YARA · Mandiant red team tool countermeasures

FIREEYE_RT_APT_Loader_Win64_REDFLARE_1

No description has been set in the source file - FireEye-RT

APT / threat actorMandiant red team tool countermeasuresBSD 2-Clause LicenseCompiles with YARA-X

Author: FireEye
Date: 2020-11-27
Modified: 2020-12-09
Score / Quality: 75 / 75

What this rule detects

No description has been set in the source file - FireEye-RT

Targets: Windows PE.

It defines 2 patterns (0 text, 2 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-loader-win64-redflare-1.yarBSD 2-Clause License

rule FIREEYE_RT_APT_Loader_Win64_REDFLARE_1 : FILE
{
	meta:
		description = "No description has been set in the source file - FireEye-RT"
		author = "FireEye"
		id = "dc162f26-66d3-5359-b1d7-ef2208b359e2"
		date = "2020-11-27"
		date = "2020-11-27"
		modified = "2020-12-09"
		reference = "https://github.com/mandiant/red_team_tool_countermeasures/"
		source_url = "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/rules/REDFLARE/production/yara/APT_Loader_Win64_REDFLARE_1.yar#L4-L17"
		license_url = "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
		hash = "f20824fa6e5c81e3804419f108445368"
		logic_hash = "2cae245a6aa36dccc2228cccefdc4ca0eb278901f063e072a369000f67d73a55"
		score = 75
		quality = 75
		tags = "FILE"
		rev = 1

	strings:
		$alloc_n_load = { 41 B9 40 00 00 00 41 B8 00 30 00 00 33 C9 [1-10] FF 50 [4-80] F3 A4 [30-120] 48 6B C9 28 [3-20] 48 6B C9 28 }
		$const_values = { 0F B6 ?? 83 C? 20 83 F? 6D [2-20] 83 C? 20 83 F? 7A }

	condition:
		( uint16( 0 ) == 0x5A4D ) and ( uint32( uint32( 0x3C ) ) == 0x00004550 ) and ( uint16( uint32( 0x3C ) + 0x18 ) == 0x020B ) and all of them
}

Strings (2 patterns)

Identifier	Type	Value	Modifiers
$alloc_n_load	hex	{ 41 B9 40 00 00 00 41 B8 00 30 00 00 33 C9 [1-10] FF 50 [4-80] F3 A4 [30-120] 48 6B C9 28 [3-20] 48 6B C9 28 }
$const_values	hex	{ 0F B6 ?? 83 C? 20 83 F? 6D [2-20] 83 C? 20 83 F? 7A }

Condition

( uint16( 0 ) == 0x5A4D ) and ( uint32( uint32( 0x3C ) ) == 0x00004550 ) and ( uint16( uint32( 0x3C ) + 0x18 ) == 0x020B ) and all of them

In plain words (Heuristic)

The file must start with “MZ” — a Windows executable (PE).
All patterns in the rule must match.

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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

https://github.com/mandiant/red_team_tool_countermeasures/

Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

f20824fa6e5c81e3804419f108445368

Licence & attribution

Author: FireEye

Source repository: Mandiant red team tool countermeasures @ 3561b71724

Licence: BSD 2-Clause License (repository licence)

Original rule

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

Rule id: dc162f26-66d3-5359-b1d7-ef2208b359e2

Metadata

rev	1

Tags:FILE

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