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DITEKSHEN_INDICATOR_TOOL_Ngrokgo

Detects Go implementation variant for Ngrok

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 Go implementation variant for Ngrok

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-ngrokgo.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_TOOL_Ngrokgo : FILE
{
	meta:
		description = "Detects Go implementation variant for Ngrok"
		author = "ditekSHen"
		id = "b11f67c5-846d-57b2-8edc-521b2dc77503"
		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#L1473-L1488"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "4ec151661e3af922aba202c68392a2af17e2c4ed25a71a0b5aacc13fbfcc5c53"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "/codegangsta/inject" fullword wide
		$s2 = "go.ngrok.com/" ascii
		$s3 = "GetIsNgrokDomain" ascii
		$s4 = "GetNgrokMetering" ascii
		$s5 = "*cli.ngrokService" ascii
		$s6 = "GetAllowNgrokLink" ascii
		$s7 = "ngrok {{.Name}}{{if .Flags}}" ascii
		$s8 = "github.com/nikolay-ngrok/" ascii

	condition:
		uint16( 0 ) == 0x5a4d and 4 of them
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$s1text"/codegangsta/inject"fullword wide
$s2text"go.ngrok.com/"ascii
$s3text"GetIsNgrokDomain"ascii
$s4text"GetNgrokMetering"ascii
$s5text"*cli.ngrokService"ascii
$s6text"GetAllowNgrokLink"ascii
$s7text"ngrok {{.Name}}{{if .Flags}}"ascii
$s8text"github.com/nikolay-ngrok/"ascii

Condition

uint16( 0 ) == 0x5a4d and 4 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 4 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: b11f67c5-846d-57b2-8edc-521b2dc77503

Tags:FILE

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