Overview

overview

10

Static

static

10

8w.exe

windows7-x64

10

8w.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8w.exe

  • Size

    952KB

  • Sample

    230131-zyv94acc81

  • MD5

    573241336c4b94a72fbce6aaa484a30e

  • SHA1

    6324cd79e099023ec6b9e677f694340ec47357b7

  • SHA256

    2ce7891884274f9749df0faf46bca81cb0bb8e120ef5367053689c7438ea54dc

  • SHA512

    95718232e1fcbc8ad405a83f00031219c18a29dacb76780dabdb6b97984c02518620599384a6683ebd9f0333a14e3ea98bdaa36779021600e5ccf63e8cbe803c

  • SSDEEP

    24576:u+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX:p8/KfRTK

Score
10/10
dcratevasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      8w.exe

    • Size

      952KB

    • MD5

      573241336c4b94a72fbce6aaa484a30e

    • SHA1

      6324cd79e099023ec6b9e677f694340ec47357b7

    • SHA256

      2ce7891884274f9749df0faf46bca81cb0bb8e120ef5367053689c7438ea54dc

    • SHA512

      95718232e1fcbc8ad405a83f00031219c18a29dacb76780dabdb6b97984c02518620599384a6683ebd9f0333a14e3ea98bdaa36779021600e5ccf63e8cbe803c

    • SSDEEP

      24576:u+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX:p8/KfRTK

    Score
    10/10
    dcratevasioninfostealerpersistencerattrojan

    • 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

      evasiontrojan

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Executes dropped EXE

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Bypass User Account Control

1
T1088

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

4
T1112

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks