Skip to content
yararules.org
Menu

YARA · ditekSHen detection

DITEKSHEN_INDICATOR_TOOL_CNC_Chisel

Detect binaries using Chisel

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

Detect binaries using Chisel

Targets: Windows PE.

It defines 7 patterns (7 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
indicator-tool-cnc-chisel.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_TOOL_CNC_Chisel : FILE
{
	meta:
		description = "Detect binaries using Chisel"
		author = "ditekSHen"
		id = "d126f2c8-655f-564f-ae46-f6bd6385dcac"
		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#L976-L990"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "08c7b2c4725431c1bf85ae8068f4250c98e58890e3b4c97aa9e419e4f487cada"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "chisel-v" ascii
		$s2 = "sendchisel-v" ascii
		$s3 = "<-chiselclosedcookiedomainefenceempty" ascii
		$ws1 = "Sec-WebSocket-Key" ascii
		$ws2 = "Sec-WebSocket-Protocol" ascii
		$ws3 = "Sec-Websocket-Version" ascii
		$ws4 = "Sec-Websocket-Extensions" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( 1 of ( $s* ) and 3 of ( $ws* ) )
}

Strings (7 patterns)

IdentifierTypeValueModifiers
$s1text"chisel-v"ascii
$s2text"sendchisel-v"ascii
$s3text"<-chiselclosedcookiedomainefenceempty"ascii
$ws1text"Sec-WebSocket-Key"ascii
$ws2text"Sec-WebSocket-Protocol"ascii
$ws3text"Sec-Websocket-Version"ascii
$ws4text"Sec-Websocket-Extensions"ascii

Condition

uint16( 0 ) == 0x5a4d and ( 1 of ( $s* ) and 3 of ( $ws* ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 1 patterns in ( $s* ) must match.
  • At least 3 patterns in ( $ws* ) 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: d126f2c8-655f-564f-ae46-f6bd6385dcac

Tags:FILE

Related rules