Overview

overview

10

Static

static

3

discord121.exe

windows10-ltsc_2021-x64

10

discord121.exe

windows11-21h2-x64

discord121.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    discord121.exe
  • Size 708KB
  • Sample261105-v98mcassbs
  • SHA256 647420e5a5f8aa487361a52868beac61d238de7f0e58aee4308d3e14d36b1cfd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
njratbootkitdefense_evasiondiscoveryexecutionpersistenceprivilege_escalationtrojan

Malware Config

Targets

    • Target
      discord121.exe
    • Size 708KB
    • SHA256 647420e5a5f8aa487361a52868beac61d238de7f0e58aee4308d3e14d36b1cfd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    bootkitdefense_evasionexecutionnjratpersistencetrojandiscoveryprivilege_escalation

    • Family: njRAT/Bladabindi

      Widely used RAT written in .NET.

      trojannjrat

    • Suspicious use of NtCreateProcessExOtherParentProcess

      defense_evasionprivilege_escalation

    • Suspicious use of NtCreateUserProcessOtherParentProcess

      defense_evasionprivilege_escalation

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

      persistence

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

      defense_evasion

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

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

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Access Token Manipulation

2
T1134

Parent PID Spoofing

2
T1134.004

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Access Token Manipulation

2
T1134

Parent PID Spoofing

2
T1134.004

Indicator Removal

1
T1070

Clear Windows Event Logs

1
T1070.001

Modify Registry

2
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Query Registry

7
T1012

System Information Discovery

7
T1082

System Network Configuration Discovery

1
T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks