Overview

overview

10

Static

static

10

HEUR-Backd...dc.exe

windows7-x64

10

HEUR-Backd...dc.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    HEUR-Backdoor.MSIL.LightStone.gen-1901ac563dc.exe

  • Size

    1.3MB

  • Sample

    230123-rbkabafa91

  • MD5

    bbcb2719208a4b82dce603101e18c7d9

  • SHA1

    dc778b4cc86f331381cbbccf6c823a2c31225288

  • SHA256

    1901ac563dc9ca30665837cb510c5e05b757e0017ac8e6dd038f1b8b87a69e30

  • SHA512

    adec71d8daf3ae8bb241840808fb274bb997f8554b47057270c0cf06cc4696a6e1a55ebd977c7e67f8b66d08b36aed430498e6f209b7b543cf76d38c2c040a90

  • SSDEEP

    24576:t/4NroVWFKq4XG+b3cuEx9V9P8nt6Qhc0yB+4:KNroVWhclcuE9VWoIJ

Score
10/10
dcratinfostealerpersistencerat

Malware Config

Targets

    • Target

      HEUR-Backdoor.MSIL.LightStone.gen-1901ac563dc.exe

    • Size

      1.3MB

    • MD5

      bbcb2719208a4b82dce603101e18c7d9

    • SHA1

      dc778b4cc86f331381cbbccf6c823a2c31225288

    • SHA256

      1901ac563dc9ca30665837cb510c5e05b757e0017ac8e6dd038f1b8b87a69e30

    • SHA512

      adec71d8daf3ae8bb241840808fb274bb997f8554b47057270c0cf06cc4696a6e1a55ebd977c7e67f8b66d08b36aed430498e6f209b7b543cf76d38c2c040a90

    • SSDEEP

      24576:t/4NroVWFKq4XG+b3cuEx9V9P8nt6Qhc0yB+4:KNroVWhclcuE9VWoIJ

    Score
    10/10
    dcratinfostealerpersistencerat

    • DcRat

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

      ratinfostealerdcrat

    • Modifies WinLogon for persistence

      persistence

    • 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

    • 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

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks