Overview

overview

10

Static

static

10

DCRatBuild.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    DCRatBuild.exe

  • Size

    2.9MB

  • Sample

    240724-s7dyvaterm

  • MD5

    c645da4aac1b91858e1d28d0aae412d0

  • SHA1

    6ed3143b658f09ea2221e811d575b1c81c1b5662

  • SHA256

    3e3979845ac10b0ac2aceccf5d4e6f86541eb3a0b8d96d04348b8495442b8014

  • SHA512

    483ccc2e6819457bbe872266c6c0ede6c0e553f8fa35552f2b16aadaa396242c636a9c3928ce2a149fa358bd83e0168da361265dcd6bdc7fc28642b1eafe9df0

  • SSDEEP

    49152:UbA30e6tQ18KD+FZvjPcpoJ/e0wOC9cDFd2LUsI74OyKJSWSCR:UbqxmK2jV20wWGLUR

Score
10/10
dcratcredential_accessdiscoveryevasioninfostealerpersistenceratspywarestealertrojan

Malware Config

Targets

    • Target

      DCRatBuild.exe

    • Size

      2.9MB

    • MD5

      c645da4aac1b91858e1d28d0aae412d0

    • SHA1

      6ed3143b658f09ea2221e811d575b1c81c1b5662

    • SHA256

      3e3979845ac10b0ac2aceccf5d4e6f86541eb3a0b8d96d04348b8495442b8014

    • SHA512

      483ccc2e6819457bbe872266c6c0ede6c0e553f8fa35552f2b16aadaa396242c636a9c3928ce2a149fa358bd83e0168da361265dcd6bdc7fc28642b1eafe9df0

    • SSDEEP

      49152:UbA30e6tQ18KD+FZvjPcpoJ/e0wOC9cDFd2LUsI74OyKJSWSCR:UbqxmK2jV20wWGLUR

    Score
    10/10
    dcratcredential_accessdiscoveryevasioninfostealerpersistenceratspywarestealertrojan

    • 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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

      credential_accessstealer

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Disables Task Manager via registry modification

      evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    behavioral1

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

5
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Query Registry

2
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks