General

  • Target

    https://drive.google.com/file/d/1xvVueF4gLi2-3zQcy3U2PIeXj6Au6is2/view?usp=drive_link

  • Sample

    240630-2z89fsybmf

Malware Config

Targets

    • Target

      https://drive.google.com/file/d/1xvVueF4gLi2-3zQcy3U2PIeXj6Au6is2/view?usp=drive_link

    • Modifies WinLogon for persistence

    • UAC bypass

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

2
T1546

Accessibility Features

1
T1546.008

Component Object Model Hijacking

1
T1546.015

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Event Triggered Execution

2
T1546

Accessibility Features

1
T1546.008

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Modify Registry

4
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Discovery

Query Registry

5
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Command and Control

Web Service

1
T1102

Tasks