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SEKOIA_Tool_Juicypotato_Exploit_Strings

Detects the JuicyPotato exploit based on strings

Hack toolJuicy PotatoSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2022-09-09
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detects the JuicyPotato exploit based on strings

Associated malware family: Juicy Potato.

Targets: Windows PE.

It defines 9 patterns (9 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

tool-juicypotato-exploit-strings.yarDetection Rule License 1.1
rule SEKOIA_Tool_Juicypotato_Exploit_Strings : FILE
{
	meta:
		description = "Detects the JuicyPotato exploit based on strings"
		author = "Sekoia.io"
		id = "03d697ae-69a7-490b-8b3c-9a8c21fb46a2"
		date = "2022-09-09"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_juicypotato_exploit_strings.yar#L1-L25"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "ef23ea2931a1b6e094c0d7bb813305c09a2214ce36680ae057926dfdc1105c80"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "JuicyPotato v%s"
		$ = "-t createprocess call: <t> CreateProcessWithTokenW"
		$ = "-p <program>: program to launch"
		$ = "-l <port>: COM server listen port"
		$ = "-m <ip>: COM server listen address"
		$ = "-n <port>: RPC server listen port"
		$ = "Error - Unknown NTLM message type..."
		$ = "[+] authresult %d"
		$ = "Waiting for auth..."

	condition:
		uint16be( 0 ) == 0x4d5a and filesize < 500KB and 2 of them
}

Strings (9 patterns)

IdentifierTypeValueModifiers
$text"JuicyPotato v%s"
$text"-t createprocess call: <t> CreateProcessWithTokenW"
$text"-p <program>: program to launch"
$text"-l <port>: COM server listen port"
$text"-m <ip>: COM server listen address"
$text"-n <port>: RPC server listen port"
$text"Error - Unknown NTLM message type..."
$text"[+] authresult %d"
$text"Waiting for auth..."

Condition

uint16be( 0 ) == 0x4d5a and filesize < 500KB and 2 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 500KB (a cheap guard that skips large files).
  • At least 2 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: 03d697ae-69a7-490b-8b3c-9a8c21fb46a2

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE

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