Overview

overview

10

Static

static

10

Ransomware.zip

windows10-2004-x64

1

Ransomware.zip

windows11-ltsc_2024-x64

10

Resubmissions

11/11/2026, 02:18

261111-crd1xadt6p10

11/11/2026, 02:14

261111-cn8q4set4x10

11/11/2026, 01:54

261111-cb2f9sts2r10

08/09/2026, 17:42

260908-v91lqsvzby10

08/09/2026, 14:47

260908-r5xshastaw

06/09/2026, 10:46

260906-mtz19shn5s10

02/09/2026, 16:53

260902-vefcbaxhjb10

02/09/2026, 16:53

260902-vd1xmaxgqd

26/04/2026, 11:25

260426-njgydaas6r10

24/04/2026, 20:04

260424-ys8gssbv3l10

Sharing

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General

  • Target
    Ransomware.zip
  • Size 49.9MB
  • Sample261111-crd1xadt6p
  • SHA256 72f6748f1c16b750d00541597668e5c306f77759dc998f65f33fe94b8c765b90
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
hiddentearnabucurdefense_evasiondiscoveryexecutionpersistenceransomwarerevoked_codesignspywarestealertrojanupx

Malware Config

Targets

    • Target
      Ransomware.zip
    • Size 49.9MB
    • SHA256 72f6748f1c16b750d00541597668e5c306f77759dc998f65f33fe94b8c765b90
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutionnabucurpersistenceransomwarespywarestealertrojanupx

    • Family: Nabucur

      Nabucur is a ransomware first seen in 2015.

      ransomwarenabucur

    • Modifies visibility of file extensions in Explorer

      defense_evasion

    • UAC bypass

      defense_evasiontrojan

    • Renames multiple (90) files with added filename extension

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

      ransomware

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Executes a VBScript file via the Windows Script Host.

      execution

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

Visual Basic

1
T1059.005

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
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

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks