Overview

overview

10

Static

static

1

AdobeReader.vbs

windows10-2004-x64

10

AdobeReader.vbs

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    08082026_1602_05082026_AdobeReader.vbs.zip
  • Size 2KB
  • Sample260808-tgxtpstzds
  • SHA256 478d74a28087aba622099f2458a3d2f07f734d3d8d6185d46e0ac380829bdeb2
  • MD5 SHA1 SHA512 TLSH
Score
10/10
backdoordefense_evasiondiscoveryexecutionpersistenceprivilege_escalationratrevoked_codesigntrojan

Malware Config

Targets

    • Target
      AdobeReader.vbs
    • Size 5KB
    • SHA256 5e101082f44e341788692169d3689c3c131d81effe4e5be8d53d40be82f6c3cb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutiontrojanbackdoorpersistenceprivilege_escalationratrevoked_codesign

    • UAC bypass

      defense_evasiontrojan

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Sets service image path in registry

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

      persistence

    • Signed with revoked ConnectWise certificate

      Binary is signed using a ConnectWise certificate revoked for key compromise.

      revoked_codesign

    • Checks computer location settings

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

    • ConnectWise ScreenConnect remote access tool

      ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

      backdoorrat

    • Deletes itself

    • 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.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Enumerates connected drives

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

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

      persistenceprivilege_escalation

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

      execution
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

3
T1059

PowerShell

1
T1059.001

Visual Basic

1
T1059.005

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

2
T1547

Authentication Package

1
T1547.002

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Authentication Package

1
T1547.002

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

4
T1012

System Information Discovery

6
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks