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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_HKTL_NET_Adcollector_Sep22_1

Detects ADCollector Tool - a lightweight tool to quickly extract valuable information from the Active Directory environment for both attacking and defending

Hack toolSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
Florian Roth (Nextron Systems)
Date
2022-09-15
Modified
2026-02-23
Score / Quality
75 / 85

What this rule detects

Detects ADCollector Tool - a lightweight tool to quickly extract valuable information from the Active Directory environment for both attacking and defending

Targets: Windows PE.

It defines 6 patterns (6 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

hktl-net-adcollector-sep22-1.yarDetection Rule License 1.1
rule SIGNATURE_BASE_HKTL_NET_Adcollector_Sep22_1 : FILE
{
	meta:
		description = "Detects ADCollector Tool - a lightweight tool to quickly extract valuable information from the Active Directory environment for both attacking and defending"
		author = "Florian Roth (Nextron Systems)"
		id = "48b376e4-752b-523e-b34e-65b6944c33fb"
		date = "2022-09-15"
		modified = "2026-02-23"
		reference = "https://github.com/dev-2null/ADCollector"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/gen_github_net_redteam_tools_names.yar#L55-L75"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		hash = "241390219a0a773463601ca68b77af97453c20af00a66492a7a78c04d481d338"
		hash = "cc086eb7316e68661e3d547b414890d5029c5cc460134d8b628f4b0be7f27fb3"
		logic_hash = "66d5363e885378c442e7532f69d4c36618d7a0f5dbe67490631d1ed5078d3fba"
		score = 75
		quality = 85
		tags = "FILE"

	strings:
		$x1 = "ADCollector.exe --SPNs --Term key --Acls 'CN=Domain Admins,CN=Users,DC=lab,DC=local'" wide fullword
		$s1 = "ADCollector.exe" wide fullword
		$s2 = "ENCRYPTED_TEXT_PASSWORD_ALLOWED" ascii fullword
		$s3 = "\\Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}\\MACHINE\\Microsoft\\Windows NT\\SecEdit\\GptTmpl.inf" wide
		$s4 = "[-] Password Does Not Expire Accounts:" wide
		$s5 = "  * runAs:       {0}" wide fullword

	condition:
		uint16( 0 ) == 0x5a4d and filesize < 300KB and ( 1 of ( $x* ) or 3 of them )
}

Strings (6 patterns)

IdentifierTypeValueModifiers
$x1text"ADCollector.exe --SPNs --Term key --Acls 'CN=Domain Admins,CN=Users,DC=lab,DC=local'"wide fullword
$s1text"ADCollector.exe"wide fullword
$s2text"ENCRYPTED_TEXT_PASSWORD_ALLOWED"ascii fullword
$s3text"\\Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}\\MACHINE\\Microsoft\\Windows NT\\SecEdit\\GptTmpl.inf"wide
$s4text"[-] Password Does Not Expire Accounts:"wide
$s5text" * runAs: {0}"wide fullword

Condition

uint16( 0 ) == 0x5a4d and filesize < 300KB and ( 1 of ( $x* ) or 3 of them )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 300KB (a cheap guard that skips large files).
  • At least 1 patterns in ( $x* ) must match.
  • At least 3 patterns in the rule must match.

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References

Sample hashes

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

  • 241390219a0a773463601ca68b77af97453c20af00a66492a7a78c04d481d338
  • cc086eb7316e68661e3d547b414890d5029c5cc460134d8b628f4b0be7f27fb3

Licence & attribution

Author: Florian Roth (Nextron Systems)

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

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

Rule id: 48b376e4-752b-523e-b34e-65b6944c33fb

Tags:FILE