Overview

overview

10

Static

static

3

VoltevV1.exe

windows10-2004-x64

9

VoltevV1.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    VoltevV1.exe
  • Size 17.2MB
  • Sample260629-pyzbmsdx5s
  • SHA256 5e70f30a9899b004c9eef3bfae142efcd288f8d98767751782c371bfaab309ba
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutionpersistenceprivilege_escalationpyinstallerransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\Desktop\VOLTEV_RECOVERY.txt

Ransom Note
  • ======================================== VOLTEV V4 - RANSOMWARE ======================================== YOUR FILES HAVE BEEN ENCRYPTED. Send 0.5 BTC to: bc1qdadkua9ytqmkkaa2hfu8qg0hl0wa0hcxn9emx4 After payment, your files will be recovered. DO NOT attempt to decrypt files yourself. ======================================== WARNING: Any tampering = permanent data loss. ========================================

Targets

    • Target
      VoltevV1.exe
    • Size 17.2MB
    • SHA256 5e70f30a9899b004c9eef3bfae142efcd288f8d98767751782c371bfaab309ba
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutionpersistenceprivilege_escalationransomwarespywarestealer

    • Grants admin privileges

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

    • Renames multiple (97) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Disables RegEdit via registry modification

      defense_evasion

    • Disables Task Manager via registry modification

      defense_evasion

    • Modifies Windows Firewall

      defense_evasion

    • Creates new service(s)

      persistenceexecution

    • Disables service(s)

      defense_evasionexecution

    • Drops startup file

    • Loads dropped DLL

    • Modifies visibility of existing users in the login screen

      A user account was hidden or made visible on the Windows login screen through a registry modification.

      defense_evasion

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Stops running service(s)

      defense_evasionexecution

    • Adds Run key to start application

      persistence

    • Drops desktop.ini file(s)

    • Modifies WinLogon

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

System Services

3
T1569

Service Execution

3
T1569.002

Persistence

Account Manipulation

1
T1098

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

4
T1543

Windows Service

4
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Account Manipulation

1
T1098

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

4
T1543

Windows Service

4
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Hide Artifacts

1
T1564

Hidden Users

1
T1564.002

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Permission Groups Discovery

1
T1069

Local Groups

1
T1069.001

Query Registry

1
T1012

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Service Stop

2
T1489

Tasks