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SEKOIA_Tool_Scanline_Strings

Detects scanline (non-packed)

Hack toolScanlineSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2024-09-06
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detects scanline (non-packed)

Associated malware family: Scanline.

Targets: Windows PE.

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

tool-scanline-strings.yarDetection Rule License 1.1
rule SEKOIA_Tool_Scanline_Strings : FILE
{
	meta:
		description = "Detects scanline (non-packed)"
		author = "Sekoia.io"
		id = "65677b81-d077-4d01-8398-cbb06ce49edf"
		date = "2024-09-06"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_scanline_strings.yar#L1-L18"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "e02ae30451aa5eaffb588e92ecc221bf6ed07097bc493c6a55cf688da8b76151"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "Resolve IP addresses to hostnames"
		$ = "Randomize IP and port scan order"
		$ = "?bhijnprsT"
		$ = "sl -bht"

	condition:
		uint16be( 0 ) == 0x4d5a and 3 of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$text"Resolve IP addresses to hostnames"
$text"Randomize IP and port scan order"
$text"?bhijnprsT"
$text"sl -bht"

Condition

uint16be( 0 ) == 0x4d5a and 3 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 3 patterns in the rule must match.

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References

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 65677b81-d077-4d01-8398-cbb06ce49edf

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE