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DITEKSHEN_MALWARE_Win_Zeppelin

Detects Zeppelin (Delphi) ransomware

MalwareZeppelinditekSHen 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 Zeppelin (Delphi) ransomware

Associated malware family: Zeppelin.

Targets: Windows PE.

It defines 8 patterns (8 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-zeppelin.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Zeppelin : FILE
{
	meta:
		description = "Detects Zeppelin (Delphi) ransomware"
		author = "ditekSHen"
		id = "368d0c31-745d-50ad-a265-50561fdc822a"
		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#L7530-L7545"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "f6c8420756b562662985dd26eaad58500a24cae786a47b788c953e86276116a1"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "TUnlockAndEncrypt" ascii
		$s2 = "TExcludeFiles" ascii
		$s3 = "TExcludeFolders" ascii
		$s4 = "TDrivesAndShares" ascii
		$s5 = "TTaskKiller" ascii
		$x1 = "!!! D !!!" ascii
		$x2 = "!!! LOCALPUBKEY !!!" ascii
		$x3 = "!!! ENCLOCALPRIVKEY !!!" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( all of ( $s* ) or all of ( $x* ) or ( 2 of ( $x* ) and 2 of ( $s* ) ) )
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$s1text"TUnlockAndEncrypt"ascii
$s2text"TExcludeFiles"ascii
$s3text"TExcludeFolders"ascii
$s4text"TDrivesAndShares"ascii
$s5text"TTaskKiller"ascii
$x1text"!!! D !!!"ascii
$x2text"!!! LOCALPUBKEY !!!"ascii
$x3text"!!! ENCLOCALPRIVKEY !!!"ascii

Condition

uint16( 0 ) == 0x5a4d and ( all of ( $s* ) or all of ( $x* ) or ( 2 of ( $x* ) and 2 of ( $s* ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $s* ) must match.
  • All patterns in ( $x* ) must match.
  • At least 2 patterns in ( $x* ) must match.
  • At least 2 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: 368d0c31-745d-50ad-a265-50561fdc822a

Tags:FILE

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