HackTool - Koadic Execution

Status: test
Severity: high
Log source: category process_creation, product windows
Author: wagga, Jonhnathan Ribeiro, oscd.community
Source: github.com/SigmaHQ/sigma

Detects command line parameters used by Koadic hack tool

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1059.003` Command and Scripting Interpreter: Windows Command Shell `T1059.005` Command and Scripting Interpreter: Visual Basic `T1059.007` Command and Scripting Interpreter: JavaScript

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation

Rule body

title: HackTool - Koadic Execution
id: 5cddf373-ef00-4112-ad72-960ac29bac34
status: test
description: Detects command line parameters used by Koadic hack tool
references:
    - https://unit42.paloaltonetworks.com/unit42-sofacy-groups-parallel-attacks/
    - https://github.com/offsecginger/koadic/blob/457f9a3ff394c989cdb4c599ab90eb34fb2c762c/data/stager/js/stdlib.js
    - https://blog.f-secure.com/hunting-for-koadic-a-com-based-rootkit/
author: wagga, Jonhnathan Ribeiro, oscd.community
date: 2020-01-12
modified: 2023-02-11
tags:
    - attack.execution
    - attack.t1059.003
    - attack.t1059.005
    - attack.t1059.007
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\cmd.exe'
        - OriginalFileName: 'Cmd.Exe'
    selection_cli:
        CommandLine|contains|all:
            - '/q'
            - '/c'
            - 'chcp'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: `condition`

all of selection_*

Stage 1: `selection_img`

selection_img:
    - Image|endswith: '\cmd.exe'
    - OriginalFileName: 'Cmd.Exe'

Stage 2: `selection_cli`

selection_cli:
    CommandLine|contains|all:
        - '/q'
        - '/c'
        - 'chcp'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`/c` corpus 15 (sigma 13, splunk 2) `/q` corpus 8 (sigma 7, splunk 1) `chcp`	`field:"CommandLine" kind:match`
`Image`	ends_with	`\cmd.exe` corpus 130 (sigma 130)	`field:"Image" kind:ends_with value:"\cmd.exe"`
`OriginalFileName`	eq	`Cmd.Exe` corpus 81 (sigma 43, elastic 21, splunk 17)	`field:"OriginalFileName" kind:eq value:"Cmd.Exe"`

HackTool - Koadic Execution

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection_img

Stage 2: selection_cli

Indicators

Stage 0: `condition`

Stage 1: `selection_img`

Stage 2: `selection_cli`