Overview

overview

10

Static

static

1

WindowsDefender.exe

windows7-x64

10

WindowsDefender.exe

windows10-2004-x64

10

WindowsDefender.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    WindowsDefender.exe
  • Size 5.4MB
  • Sample241208-qfm2bsvjev
  • SHA256 e492c77d4584e952218e5183b68aacab3cbc0d46ad5a08863daa1ada03aa5443
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
defense_evasionevasionexecutionpersistence

Malware Config

Targets

    • Target
      WindowsDefender.exe
    • Size 5.4MB
    • SHA256 e492c77d4584e952218e5183b68aacab3cbc0d46ad5a08863daa1ada03aa5443
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    evasionexecutionpersistencedefense_evasion

    • Modifies security service

      evasion

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Creates new service(s)

      persistenceexecution

    • Drops file in Drivers directory

    • Sets service image path in registry

      persistence

    • Stops running service(s)

      evasionexecution

    • Checks BIOS information in registry

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

    • Indicator Removal: Clear Windows Event Logs

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

      defense_evasion

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

2
T1059.001

System Services

2
T1569

Service Execution

2
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Power Settings

1
T1653

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Defense Evasion

Impair Defenses

1
T1562

Indicator Removal

1
T1070

Clear Windows Event Logs

1
T1070.001

Modify Registry

2
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

4
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1
T1489

Tasks