YARA · Mandiant red team tool countermeasures

FIREEYE_RT_APT_Keylogger_Win32_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: 2020-12-01
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-keylogger-win32-redflare-1.yarBSD 2-Clause License

rule FIREEYE_RT_APT_Keylogger_Win32_REDFLARE_1 : FILE
{
	meta:
		description = "No description has been set in the source file - FireEye-RT"
		author = "FireEye"
		id = "ad14db66-d640-5712-b2c8-a3d42d5a90f3"
		date = "2020-12-01"
		date = "2020-12-01"
		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_Keylogger_Win32_REDFLARE_1.yar#L4-L17"
		license_url = "https://github.com/mandiant/red_team_tool_countermeasures//blob/3561b71724dbfa3e2bb78106aaa2d7f8b892c43b/LICENSE.txt"
		hash = "d7cfb9fbcf19ce881180f757aeec77dd"
		logic_hash = "aebbaa050bee3775ffac4214ea4ab58284384e7eb41e66ee4838b9359e72821e"
		score = 75
		quality = 75
		tags = "FILE"
		rev = 2

	strings:
		$create_window = { 6A 00 68 [4] 6A 00 6A 00 68 00 00 00 80 68 00 00 00 80 68 00 00 00 80 68 00 00 00 80 68 00 00 CF 00 68 [4] 68 [4] 6A 00 FF 15 }
		$keys_check = { 6A 14 [0-5] FF [1-5] 6A 10 [0-5] FF [1-5] B9 00 80 FF FF 66 85 C1 75 ?? 68 A0 00 00 00 FF [1-5] B9 00 80 FF FF 66 85 C1 75 ?? 68 A1 00 00 00 FF [1-5] B9 00 80 FF FF 66 85 C1 74 }

	condition:
		( uint16( 0 ) == 0x5A4D ) and ( uint32( uint32( 0x3C ) ) == 0x00004550 ) and ( uint16( uint32( 0x3C ) + 0x18 ) == 0x010B ) and all of them
}

Strings (2 patterns)

Identifier	Type	Value	Modifiers
$create_window	hex	{ 6A 00 68 [4] 6A 00 6A 00 68 00 00 00 80 68 00 00 00 80 68 00 00 00 80 68 00 00 00 80 68 00 00 CF 00 68 [4] 68 [4] 6A 00 FF 15 }
$keys_check	hex	{ 6A 14 [0-5] FF [1-5] 6A 10 [0-5] FF [1-5] B9 00 80 FF FF 66 85 C1 75 ?? 68 A0 00 00 00 FF [1-5] B9 00 80 FF FF 66 85 C1 75 ?? 68 A1 00 00 00 FF [1-5] B9 00 80 …

Condition

( uint16( 0 ) == 0x5A4D ) and ( uint32( uint32( 0x3C ) ) == 0x00004550 ) and ( uint16( uint32( 0x3C ) + 0x18 ) == 0x010B ) 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).

d7cfb9fbcf19ce881180f757aeec77dd

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: ad14db66-d640-5712-b2c8-a3d42d5a90f3

Metadata

rev	2

Tags:FILE

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