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DITEKSHEN_MALWARE_Win_TOITOIN_Kritaloader

Detects TOITOIN KritaLoader

MalwareTOITOINditekSHen 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 TOITOIN KritaLoader

Associated malware family: TOITOIN.

Targets: Windows PE.

It defines 3 patterns (3 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-toitoin-kritaloader.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_TOITOIN_Kritaloader : FILE
{
	meta:
		description = "Detects TOITOIN KritaLoader"
		author = "ditekSHen"
		id = "5ff002fc-1108-554e-9de6-92d568826d1d"
		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#L11116-L11127"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "9629a4cfa606812d2579c0c0d486dec5971854e5133f0594a4638db5b89c3135"
		score = 75
		quality = 75
		tags = "FILE"
		clamav = "ditekSHen.MALWARE.Win.Trojan.TOITOIN"

	strings:
		$p1 = ":\\Trabalho_2023\\OFF_2023\\" ascii
		$p2 = "DLL_Start_OK.pdb" ascii
		$s1 = "krita_main" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( 1 of ( $p* ) and 1 of ( $s* ) )
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$p1text":\\Trabalho_2023\\OFF_2023\\"ascii
$p2text"DLL_Start_OK.pdb"ascii
$s1text"krita_main"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and ( 1 of ( $p* ) and 1 of ( $s* ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 1 patterns in ( $p* ) must match.
  • At least 1 patterns in ( $s* ) 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: 5ff002fc-1108-554e-9de6-92d568826d1d

Metadata

clamavditekSHen.MALWARE.Win.Trojan.TOITOIN

Tags:FILE

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