Overview

overview

8

Static

static

3

mainscript.exe

windows11-21h2-x64

8

Sharing

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General

  • Target

    mainscript.exe

  • Size

    30.1MB

  • Sample

    241120-fehp4ssbmj

  • MD5

    f371412cfb1e36a95b02099ad84a6ff7

  • SHA1

    6069596283f557adc6760a2a0c98ec898a0c446f

  • SHA256

    f18921ab4b4efa1f036b7a4d49a109fe8db6430ae37b252a60452852898b6d47

  • SHA512

    a18f9f6f516a8d845eb0a6a09770a4f050411a22888e2464185ebc680e05a36d9ce18706d809b662124eff5a072a9268255be0997ee85243891af672b5579248

  • SSDEEP

    786432:bG9Yi8MkQ1JnW828P51QtIbSw1JIxHEha8DZcQl8WBD0DIyW5r:S9SA1Wr8PXiI2gNs6OWp5yK

Score
8/10
bootkitdiscoveryexecutionpersistenceprivilege_escalationpyinstallerransomware

Malware Config

Targets

    • Target

      mainscript.exe

    • Size

      30.1MB

    • MD5

      f371412cfb1e36a95b02099ad84a6ff7

    • SHA1

      6069596283f557adc6760a2a0c98ec898a0c446f

    • SHA256

      f18921ab4b4efa1f036b7a4d49a109fe8db6430ae37b252a60452852898b6d47

    • SHA512

      a18f9f6f516a8d845eb0a6a09770a4f050411a22888e2464185ebc680e05a36d9ce18706d809b662124eff5a072a9268255be0997ee85243891af672b5579248

    • SSDEEP

      786432:bG9Yi8MkQ1JnW828P51QtIbSw1JIxHEha8DZcQl8WBD0DIyW5r:S9SA1Wr8PXiI2gNs6OWp5yK

    Score
    8/10
    bootkitdiscoveryexecutionpersistenceprivilege_escalationransomware

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

3
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Wi-Fi Discovery

1
T1016.002

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Tasks