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SEKOIA_Apt_Dark_Pink_Pdb_Path

Detects PDB path of some Dark Pink sample

APT / threat actorDarkpinkSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2023-01-16
Modified
2024-12-19
Score / Quality
75 / 76

What this rule detects

Detects PDB path of some Dark Pink sample

Associated malware family: Darkpink.

Targets: Windows PE, Linux ELF.

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

Summary generated from the rule's metadata and condition.

Rule source

apt-dark-pink-pdb-path.yarDetection Rule License 1.1
rule SEKOIA_Apt_Dark_Pink_Pdb_Path : FILE
{
	meta:
		description = "Detects PDB path of some Dark Pink sample"
		author = "Sekoia.io"
		id = "695586dc-66de-4f9d-814a-2d81261a7357"
		date = "2023-01-16"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_dark_pink_pdb_path.yar#L1-L17"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "f67e0d50975697424313acc77a9c86e1c2b41fde1663e4f5d8f4765acb997775"
		score = 75
		quality = 76
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "C:\\Users\\hoang\\source\\repos\\Cucky\\Cucky\\obj\\Release\\net46\\Cucky.pdb" wide ascii
		$s2 = "C:\\Users\\build\\source\\repos\\CtealWebCredential\\Release\\CtealWebCredential.pdb" wide ascii

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 5MB and any of them
}

Strings (2 patterns)

IdentifierTypeValueModifiers
$s1text"C:\\Users\\hoang\\source\\repos\\Cucky\\Cucky\\obj\\Release\\net46\\Cucky.pdb"wide ascii
$s2text"C:\\Users\\build\\source\\repos\\CtealWebCredential\\Release\\CtealWebCredential.pdb"wide ascii

Condition

( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 5MB and any of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must start with the ELF header — a Linux/Unix executable.
  • The file must be smaller than 5MB (a cheap guard that skips large files).
  • At least one pattern in the rule must match.

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References

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

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: 695586dc-66de-4f9d-814a-2d81261a7357

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE

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