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DITEKSHEN_INDICATOR_TOOL_Fscan

Detects GoGo scan tool

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 GoGo scan tool

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-fscan.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_TOOL_Fscan : FILE
{
	meta:
		description = "Detects GoGo scan tool"
		author = "ditekSHen"
		id = "3bf73853-15c1-54f7-866a-6a7632e39f19"
		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#L1588-L1602"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "b107eb767454c4c084a7237c107c8414bdb03c324902769ac544c5903e346e17"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "fscan version:" ascii
		$s2 = "Citrix-ConfProxyCitrix-MetaframeCitrix-NetScalerCitrix-XenServerCitrix_Netscaler" ascii
		$s3 = "(AkamaiGHost)(DESCRIPTION=(Typecho</a>)(^.+)([0-9]+)(confluence.)(dotDefender)" ascii
		$s4 = "/fscan/" ascii
		$s5 = "WebScan.CheckDatas" ascii
		$s6 = "'Exploit.Test" ascii
		$s7 = "rules:" ascii

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

Strings (7 patterns)

IdentifierTypeValueModifiers
$s1text"fscan version:"ascii
$s2text"Citrix-ConfProxyCitrix-MetaframeCitrix-NetScalerCitrix-XenServerCitrix_Netscaler"ascii
$s3text"(AkamaiGHost)(DESCRIPTION=(Typecho</a>)(^.+)([0-9]+)(confluence.)(dotDefender)"ascii
$s4text"/fscan/"ascii
$s5text"WebScan.CheckDatas"ascii
$s6text"'Exploit.Test"ascii
$s7text"rules:"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: 3bf73853-15c1-54f7-866a-6a7632e39f19

Tags:FILE

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