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DITEKSHEN_MALWARE_Win_Hakunamatata

Detects HakunaMatata ransomware

MalwareHakunamatataditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects HakunaMatata ransomware

Associated malware family: Hakunamatata.

Targets: Windows PE.

It defines 13 patterns (13 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-hakunamatata.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Hakunamatata : FILE
{
	meta:
		description = "Detects HakunaMatata ransomware"
		author = "ditekSHen"
		id = "43ca40bb-9eb6-558e-977d-f1fff5659565"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L10064-L10084"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "b49705845e5440c3c1e47e196592ca2b31319d1af5265f2f954d3367e3d39d5c"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run" wide
		$s2 = "(?:[13]{1}[a-km-zA-HJ-NP-Z1-9]{26,33}|bc1[a-z0-9]{39,59})" wide
		$s3 = "<RSAKeyValue><Modulus>" wide
		$s4 = "HAKUNA MATATA" ascii wide
		$s5 = "EXCEPTIONAL_FILE" ascii
		$s6 = "TRIPLE_ENCRYPT" ascii
		$s7 = "FULL_ENCRYPT" ascii
		$s8 = "TARGETED_EXTENSIONS" ascii
		$s9 = "CHANGE_PROCESS_NAME" ascii
		$s10 = "KILL_APPS_ENCRYPT_AGAIN" ascii
		$s11 = "<ALL_DRIVES>b__" ascii
		$s12 = "dataToEncrypt" ascii
		$s13 = "<RECURSIVE_DIRECTORY_LOOK>" ascii

	condition:
		uint16( 0 ) == 0x5a4d and 5 of them
}

Strings (13 patterns)

IdentifierTypeValueModifiers
$s1text"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run"wide
$s2text"(?:[13]{1}[a-km-zA-HJ-NP-Z1-9]{26,33}|bc1[a-z0-9]{39,59})"wide
$s3text"<RSAKeyValue><Modulus>"wide
$s4text"HAKUNA MATATA"ascii wide
$s5text"EXCEPTIONAL_FILE"ascii
$s6text"TRIPLE_ENCRYPT"ascii
$s7text"FULL_ENCRYPT"ascii
$s8text"TARGETED_EXTENSIONS"ascii
$s9text"CHANGE_PROCESS_NAME"ascii
$s10text"KILL_APPS_ENCRYPT_AGAIN"ascii
$s11text"<ALL_DRIVES>b__"ascii
$s12text"dataToEncrypt"ascii
$s13text"<RECURSIVE_DIRECTORY_LOOK>"ascii

Condition

uint16( 0 ) == 0x5a4d and 5 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 5 patterns in the rule must match.

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References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

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

Rule id: 43ca40bb-9eb6-558e-977d-f1fff5659565

Tags:FILE

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