Overview

overview

10

Static

static

3

2026-08-09...ck.exe

windows10-2004-x64

10

2026-08-09...ck.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-08-09_5837ed2bf16f56cb6196e79c91015209_elex_virlock
  • Size 579KB
  • Sample260809-ka911sbr9x
  • SHA256 cfca767aad61f89d3d434ddab510a7edf9c4d62558cbd9a3eeb01afea99aaeb5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
nabucurdefense_evasiondiscoveryexecutionpersistenceransomwaretrojan

Malware Config

Targets

    • Target
      2026-08-09_5837ed2bf16f56cb6196e79c91015209_elex_virlock
    • Size 579KB
    • SHA256 cfca767aad61f89d3d434ddab510a7edf9c4d62558cbd9a3eeb01afea99aaeb5
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutionnabucurpersistenceransomwaretrojan

    • Family: Nabucur

      Nabucur is a ransomware first seen in 2015.

      ransomwarenabucur

    • Modifies visibility of file extensions in Explorer

      defense_evasion

    • UAC bypass

      defense_evasiontrojan

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

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

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks