Overview

overview

10

Static

static

3

79643de14c...cb.exe

windows7-x64

10

79643de14c...cb.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    79643de14cbcaa8418631f111829d949aa12077da33fd0981eb3ae56e1f570cb

  • Size

    1.4MB

  • Sample

    241015-e2m3nsyepn

  • MD5

    869d5f7ec4cb73ed019ca39fc6e7c232

  • SHA1

    7c666682e2e5051d4f9e33a6e04d8fd7882781d4

  • SHA256

    79643de14cbcaa8418631f111829d949aa12077da33fd0981eb3ae56e1f570cb

  • SHA512

    419bc13d2bec67948030f58e31103383d1bd6038a8ec8052e7196084fee9ba873832f60432d2a7bf953fddf3c461d05491cde4914d1373ba25309fcf57d84d03

  • SSDEEP

    24576:r5vEMO3wx7BGLfy/ysP4dDM+nKuiGw0Gu6j+TMK2SX644sSHwQLl5i0T:iT3wFB8sPInviG79g+YKrr4swho0T

Score
10/10
dcratdiscoveryevasioninfostealerpersistencerat

Malware Config

Targets

    • Target

      79643de14cbcaa8418631f111829d949aa12077da33fd0981eb3ae56e1f570cb

    • Size

      1.4MB

    • MD5

      869d5f7ec4cb73ed019ca39fc6e7c232

    • SHA1

      7c666682e2e5051d4f9e33a6e04d8fd7882781d4

    • SHA256

      79643de14cbcaa8418631f111829d949aa12077da33fd0981eb3ae56e1f570cb

    • SHA512

      419bc13d2bec67948030f58e31103383d1bd6038a8ec8052e7196084fee9ba873832f60432d2a7bf953fddf3c461d05491cde4914d1373ba25309fcf57d84d03

    • SSDEEP

      24576:r5vEMO3wx7BGLfy/ysP4dDM+nKuiGw0Gu6j+TMK2SX644sSHwQLl5i0T:iT3wFB8sPInviG79g+YKrr4swho0T

    Score
    10/10
    dcratdiscoveryevasioninfostealerpersistencerat

    • 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.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

      evasion

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    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

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

2
T1112

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Discovery

Query Registry

5
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Virtualization/Sandbox Evasion

2
T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks