Skip to content
yararules.org
Menu

YARA · ditekSHen detection

DITEKSHEN_INDICATOR_TOOL_Chromekatz

Detects ChromeKatz: CookieKatz and CredentialKatz

Suspicious / huntingditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekshen
Date
2020-11-06
Modified
2024-09-25
Score / Quality
75 / 75

What this rule detects

Detects ChromeKatz: CookieKatz and CredentialKatz

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
indicator-tool-chromekatz.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_TOOL_Chromekatz : FILE
{
	meta:
		description = "Detects ChromeKatz: CookieKatz and CredentialKatz"
		author = "ditekshen"
		id = "9dd706c8-552c-5c96-9b81-cfd50157ac34"
		date = "2020-11-06"
		modified = "2024-09-25"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/indicator_tools.yar#L1893-L1908"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "4f1bdbb7f8c4893444baac287c8fcefaca80a4301845706b56e9f9628c9f116f"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "\\include\\xmemory" ascii wide
		$s2 = "targetBrowser" ascii
		$s3 = "thirdPattern" ascii
		$s4 = "isBrowserWow64" ascii
		$s5 = "wcscpy_s(memory, size_in_elements, string)" fullword wide
		$s6 = "hChrome" fullword ascii
		$t1 = "szCookieMonster" fullword ascii
		$t2 = "szPasswordReuseDetectorInstances" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 6 of them
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$s1text"\\include\\xmemory"ascii wide
$s2text"targetBrowser"ascii
$s3text"thirdPattern"ascii
$s4text"isBrowserWow64"ascii
$s5text"wcscpy_s(memory, size_in_elements, string)"fullword wide
$s6text"hChrome"fullword ascii
$t1text"szCookieMonster"fullword ascii
$t2text"szPasswordReuseDetectorInstances"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and 6 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 6 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: 9dd706c8-552c-5c96-9b81-cfd50157ac34

Tags:FILE

Related rules