Overview

overview

10

Static

static

1

LCrypt0rX.vbs

windows7-x64

10

LCrypt0rX.vbs

windows10-ltsc 2021-x64

10

Sharing

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General

  • Target
    LCrypt0rX.vbs
  • Size 22KB
  • Sample241102-vsn7dazglc
  • SHA256 8e9fa72b7271d59e0c804d4353a8aa0a2e151642f57cb9d61e92ba5aa5583d87
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
defense_evasiondiscoveryevasionexecutionimpactpersistenceransomwaretrojan

Malware Config

Targets

    • Target
      LCrypt0rX.vbs
    • Size 22KB
    • SHA256 8e9fa72b7271d59e0c804d4353a8aa0a2e151642f57cb9d61e92ba5aa5583d87
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    defense_evasiondiscoveryevasionexecutionimpactpersistenceransomwaretrojan

    • Modifies WinLogon for persistence

      persistence

    • UAC bypass

      evasiontrojan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Blocklisted process makes network request

    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

      evasion

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Direct Volume Access

1
T1006

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

7
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

4
T1012

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

3
T1490

Tasks