YARA · Mandiant red team tool countermeasures

FIREEYE_RT_APT_Loader_Win64_REDFLARE_2

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 3 patterns (1 text, 2 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

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

rule FIREEYE_RT_APT_Loader_Win64_REDFLARE_2 : FILE
{
	meta:
		description = "No description has been set in the source file - FireEye-RT"
		author = "FireEye"
		id = "043f4e29-710d-5e17-a0ed-82cd3a565194"
		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_2.yar#L4-L18"
		license_url = "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
		hash = "100d73b35f23b2fe84bf7cd37140bf4d"
		logic_hash = "9fad845ed963fae46ac7ddc44407d5f6ed0a061f6a106764b9f912ef718279b4"
		score = 75
		quality = 75
		tags = "FILE"
		rev = 1

	strings:
		$alloc = { 45 8B C0 33 D2 [2-6] 00 10 00 00 [2-6] 04 00 00 00 [1-6] FF 15 [4-60] FF 15 [4] 85 C0 [4-40] 20 00 00 00 [4-40] FF 15 [4] 85 C0 }
		$inject = { 83 F8 01 [2-20] 33 C0 45 33 C9 [3-10] 45 33 C0 [3-10] 33 D2 [30-100] FF 15 [4] 85 C0 [20-100] 01 00 10 00 [0-10] FF 15 [4] 85 C0 [4-30] FF 15 [4] 85 C0 [2-20] FF 15 [4] 83 F8 FF }
		$s1 = "ResumeThread" fullword

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

Strings (3 patterns)

Identifier	Type	Value	Modifiers
$alloc	hex	{ 45 8B C0 33 D2 [2-6] 00 10 00 00 [2-6] 04 00 00 00 [1-6] FF 15 [4-60] FF 15 [4] 85 C0 [4-40] 20 00 00 00 [4-40] FF 15 [4] 85 C0 }
$inject	hex	{ 83 F8 01 [2-20] 33 C0 45 33 C9 [3-10] 45 33 C0 [3-10] 33 D2 [30-100] FF 15 [4] 85 C0 [20-100] 01 00 10 00 [0-10] FF 15 [4] 85 C0 [4-30] FF 15 [4] 85 C0 [2-20] …
$s1	text	"ResumeThread"	fullword

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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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).

100d73b35f23b2fe84bf7cd37140bf4d

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: 043f4e29-710d-5e17-a0ed-82cd3a565194

Metadata

rev	1

Tags:FILE

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