Overview

overview

10

Static

static

3

drwn.io_ransome.exe

windows10-2004-x64

drwn.io_ransome.exe

windows11-21h2-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    drwn.io_ransome.exe
  • Size 39KB
  • Sample260509-kysrmsg13r
  • SHA256 22917b4c0768a6a34eba95d0242b956c100bc86f88984b1f2d0d6e156568e84b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
nanocoredefense_evasiondiscoveryexecutionimpactkeyloggerpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target
      drwn.io_ransome.exe
    • Size 39KB
    • SHA256 22917b4c0768a6a34eba95d0242b956c100bc86f88984b1f2d0d6e156568e84b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutionnanocoreimpactkeyloggerpersistenceransomwarespywarestealertrojan

    • Family: NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

      keyloggertrojanstealerspywarenanocore

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

      defense_evasion

    • Modifies Windows Firewall

      defense_evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Stops running service(s)

      defense_evasionexecution

    • Adds Run key to start application

      persistence

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

2
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

System Services

1
T1569

Service Execution

1
T1569.002

Windows Management Instrumentation

1
T1047

Persistence

Account Manipulation

1
T1098

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Account Manipulation

1
T1098

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Direct Volume Access

1
T1006

Impair Defenses

3
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

1
T1112

Credential Access

Discovery

Permission Groups Discovery

1
T1069

Local Groups

1
T1069.001

Query Registry

2
T1012

System Information Discovery

2
T1082

System Network Configuration Discovery

1
T1016

Wi-Fi Discovery

1
T1016.002

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2
T1490

Service Stop

1
T1489

Tasks