Overview

overview

10

Static

static

3

xd8c13368c...24.exe

windows10-2004-x64

10

xd8c13368c...24.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    xd8c13368c8f4dc84b32e39ae388d6513498ac2cf8a8567de9a897bbd10932624.exe
  • Size 2.0MB
  • Sample260425-jchtwaa131
  • SHA256 d8c13368c8f4dc84b32e39ae388d6513498ac2cf8a8567de9a897bbd10932624
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
dcratdefense_evasiondiscoveryexecutioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target
      xd8c13368c8f4dc84b32e39ae388d6513498ac2cf8a8567de9a897bbd10932624.exe
    • Size 2.0MB
    • SHA256 d8c13368c8f4dc84b32e39ae388d6513498ac2cf8a8567de9a897bbd10932624
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutiondcratinfostealerpersistencerattrojan

    • Family: DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

      defense_evasiontrojan

    • Drops file in Drivers directory

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • SmartAssembly .NET packer

      Detects SmartAssembly .NET packer.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

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

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

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