Overview

overview

10

Static

static

10

lc1(2).exe

windows10-ltsc_2021-x64

10

Sharing

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General

  • Target
    lc1(2).exe
  • Size 12.7MB
  • Sample260910-zz3esswemg
  • SHA256 8af1a173db1d008e34a4c92afba33dd0def7b58880ee63626dec64355ce72f68
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryevasionexecutionpersistenceransomwaretrojan

Malware Config

Targets

    • Target
      lc1(2).exe
    • Size 12.7MB
    • SHA256 8af1a173db1d008e34a4c92afba33dd0def7b58880ee63626dec64355ce72f68
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryevasionexecutionpersistenceransomwaretrojan

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies WinLogon for persistence

      persistence

    • Modifies Windows Defender DisableAntiSpyware settings

      evasiontrojan

    • Modifies Windows Defender Real-time Protection settings

      defense_evasiontrojan

    • Modifies Windows Defender TamperProtection settings

      evasiontrojan

    • Modifies Windows Defender notification settings

      defense_evasiontrojan

    • Modifies firewall policy service

      defense_evasion

    • Modifies security service

      defense_evasion

    • UAC bypass

      defense_evasiontrojan

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (89) 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 one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

      defense_evasion

    • Drops file in Drivers directory

    • Event Triggered Execution: Image File Execution Options Injection

      persistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

      defense_evasion

    • Windows security modification

      defense_evasiontrojan

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

1
T1059.001

Windows Command Shell

1
T1059.003

Persistence

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

6
T1543

Windows Service

6
T1543.003

Event Triggered Execution

1
T1546

Image File Execution Options Injection

1
T1546.012

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

Create or Modify System Process

6
T1543

Windows Service

6
T1543.003

Event Triggered Execution

1
T1546

Image File Execution Options Injection

1
T1546.012

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

9
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

7
T1562.001

Safe Mode Boot

1
T1562.009

Modify Registry

11
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

1
T1490

Tasks