Overview

overview

10

Static

static

3

e3b04ffe1c...d1.exe

windows7-x64

10

e3b04ffe1c...d1.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e3b04ffe1c3222f16e71be15978a33b03fa6bdd92e276d7fa933f04e6929aed1

  • Size

    2.2MB

  • Sample

    241113-d6w1psypaq

  • MD5

    83539ba7c5103e90cf7230812873abb5

  • SHA1

    aa84fc6f29b943e714f7be00e4cc7af957484381

  • SHA256

    e3b04ffe1c3222f16e71be15978a33b03fa6bdd92e276d7fa933f04e6929aed1

  • SHA512

    e8183cbd06ae2f1930cf7a2d417562d1c90cc1e5bbe580f0049d2b303ab4699f59981d6ab6a3f774c01dc014e9f1c7cc1933e1e6aeaea62404f42e1e07d27487

  • SSDEEP

    24576:2TbBv5rUyXVijPqBdzumpuWIax7RAxXo6MA17qm8w4tBPP+3wVwLsvMlDF/3cWA3:IBJiSr41q9FtBPW3+elDNMWAgPrc7H

Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      e3b04ffe1c3222f16e71be15978a33b03fa6bdd92e276d7fa933f04e6929aed1

    • Size

      2.2MB

    • MD5

      83539ba7c5103e90cf7230812873abb5

    • SHA1

      aa84fc6f29b943e714f7be00e4cc7af957484381

    • SHA256

      e3b04ffe1c3222f16e71be15978a33b03fa6bdd92e276d7fa933f04e6929aed1

    • SHA512

      e8183cbd06ae2f1930cf7a2d417562d1c90cc1e5bbe580f0049d2b303ab4699f59981d6ab6a3f774c01dc014e9f1c7cc1933e1e6aeaea62404f42e1e07d27487

    • SSDEEP

      24576:2TbBv5rUyXVijPqBdzumpuWIax7RAxXo6MA17qm8w4tBPP+3wVwLsvMlDF/3cWA3:IBJiSr41q9FtBPW3+elDNMWAgPrc7H

    Score
    10/10
    dcratdiscoveryexecutioninfostealerpersistencerat

    • DcRat

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

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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

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

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks