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Active Rule
Potential SNAKE Malware Installation CLI Arguments Indicator
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential SNAKE Malware Installation CLI Arguments Indicator
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: Potential SNAKE Malware Installation CLI Arguments Indicator
id: 02cbc035-b390-49fe-a9ff-3bb402c826db
status: test
description: Detects a specific command line arguments sequence seen used by SNAKE malware during its installation as described by CISA in their report
references:
- https://media.defense.gov/2023/May/09/2003218554/-1/-1/0/JOINT_CSA_HUNTING_RU_INTEL_SNAKE_MALWARE_20230509.PDF
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-04
tags:
- attack.execution
- detection.emerging-threats
logsource:
category: process_creation
product: windows
detection:
selection:
# This CLI regex is based on the following description from the report:
# The jpsetup.exe installer requires two arguments to be passed via the command line for execution
# The first argument is a wide character string hashed with SHA-256 twice -> We assume that the first argument is of length SHA256
# The AES initialization vector (IV) consists of the first 16 bytes of the second argument to jpsetup.exe -> We assume that the second argument is of at least 16 bytes (16 characters)
CommandLine|re: '\s[a-fA-F0-9]{64}\s[a-fA-F0-9]{16}'
condition: selection
falsepositives:
- Unlikely
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules-emerging-threats/2023/Malware/SNAKE/proc_creation_win_malware_snake_installer_cli_args.yml