Overview

overview

10

Static

static

10

8437c68993...88.exe

windows7-x64

10

8437c68993...88.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8437c6899352c57f314716d1c297418831b42ff83833669e4aed0192a5edca88.exe

  • Size

    952KB

  • Sample

    241122-nlk3tawjfn

  • MD5

    41ccbb9f4e1b3b8acbe42f57842a6ab9

  • SHA1

    777288aa34f632b9279a0ef0ef571ed8c32f6ede

  • SHA256

    8437c6899352c57f314716d1c297418831b42ff83833669e4aed0192a5edca88

  • SHA512

    b1030ff32bea991d7d1ce92fb6eebdeefb2637cc808becc73ff511112c8079cc7228891ab217d51953b22b768c339eaafe6052a6ba1b3b74fb78c6997d8c27e9

  • SSDEEP

    24576:W+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXe:x8/KfRTKQ

Score
10/10
dcratevasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      8437c6899352c57f314716d1c297418831b42ff83833669e4aed0192a5edca88.exe

    • Size

      952KB

    • MD5

      41ccbb9f4e1b3b8acbe42f57842a6ab9

    • SHA1

      777288aa34f632b9279a0ef0ef571ed8c32f6ede

    • SHA256

      8437c6899352c57f314716d1c297418831b42ff83833669e4aed0192a5edca88

    • SHA512

      b1030ff32bea991d7d1ce92fb6eebdeefb2637cc808becc73ff511112c8079cc7228891ab217d51953b22b768c339eaafe6052a6ba1b3b74fb78c6997d8c27e9

    • SSDEEP

      24576:W+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXe:x8/KfRTKQ

    Score
    10/10
    dcratevasioninfostealerpersistencerattrojan

    • 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.

    • UAC bypass

      evasiontrojan

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

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

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks