Overview

overview

10

Static

static

10

646A50D060...44.exe

windows7-x64

10

646A50D060...44.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    646A50D060AE1B649F0CA735AABF5744.exe
  • Size 3.6MB
  • Sample241126-k2qrfstrhw
  • SHA256 078a6edfe74bdca838f020373b45f18d1a89abe276d75eedba8cc4a0e8ac0acd
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
dcratdiscoveryevasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target
      646A50D060AE1B649F0CA735AABF5744.exe
    • Size 3.6MB
    • SHA256 078a6edfe74bdca838f020373b45f18d1a89abe276d75eedba8cc4a0e8ac0acd
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    dcratdiscoveryevasioninfostealerpersistencerattrojan

    • 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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan
    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

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks