Detection rules › Sigma

Potential SNAKE Malware Installation Binary Indicator

Status
test
Severity
high
Log source
product windows, category process_creation
Author
Nasreddine Bencherchali (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects a specific binary name seen used by SNAKE malware during its installation as described by CISA in their report

MITRE ATT&CK coverage

TacticTechniques
ExecutionNo specific technique

Event coverage

Rule body yaml

title: Potential SNAKE Malware Installation Binary Indicator
id: d91ff53f-fd0c-419d-a6b8-ae038d5c3733
status: test
description: Detects a specific binary name 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:
        Image|endswith:
            - '\jpsetup.exe'
            - '\jpinst.exe'
    filter_main_cli_name:
        CommandLine:
            - 'jpinst.exe'
            - 'jpinst'
            - 'jpsetup.exe'
            - 'jpsetup'
    filter_main_cli_empty:
        CommandLine: ''
    filter_main_cli_null:
        CommandLine: null
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unlikely
level: high

Stages and Predicates

Stage 0: condition

selection and not 1 of filter_main_*

Stage 1: selection

selection:
    Image|endswith:
        - '\jpsetup.exe'
        - '\jpinst.exe'

Stage 2: not filter_main_*

filter_main_cli_name:
    CommandLine:
        - 'jpinst.exe'
        - 'jpinst'
        - 'jpsetup.exe'
        - 'jpsetup'
filter_main_cli_empty:
    CommandLine: ''
filter_main_cli_null:
    CommandLine: null

Exclusions

Top-level NOT(...) conjuncts: predicates this rule actively suppresses.

FieldKindExcluded values
CommandLineeqjpinst
CommandLineeqjpinst.exe
CommandLineeqjpsetup
CommandLineeqjpsetup.exe
CommandLineis_null(no value, null check)

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Imageends_with
  • \jpinst.exe
  • \jpsetup.exe