Overview

overview

10

Static

static

3

1771060a61...d8.exe

windows7-x64

10

1771060a61...d8.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    1771060a61273b3e508afad18244ba53155e715d22bc9b503224658ccf48dfd8.exe

  • Size

    1.9MB

  • Sample

    241203-kyb4wstnhq

  • MD5

    447eece2bd8956409434aa2a41f94c23

  • SHA1

    bce3ace0ee29acf1b7e2e957aeacdbdeccb9537f

  • SHA256

    1771060a61273b3e508afad18244ba53155e715d22bc9b503224658ccf48dfd8

  • SHA512

    f7ea67a4fcc417381002c0f991c1d3910468b62a1d7ecd797d24bffdce4e609c2a29eb9889aacecf7932f3ad816ccb4f1df6b6d62ba1ed2499d48a42008e49ec

  • SSDEEP

    49152:zES0GzPDPtGUE/Nb8HdX+rKXJyCnKhgLn0Hcx:zES0qybydXUyfK2LCM

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      1771060a61273b3e508afad18244ba53155e715d22bc9b503224658ccf48dfd8.exe

    • Size

      1.9MB

    • MD5

      447eece2bd8956409434aa2a41f94c23

    • SHA1

      bce3ace0ee29acf1b7e2e957aeacdbdeccb9537f

    • SHA256

      1771060a61273b3e508afad18244ba53155e715d22bc9b503224658ccf48dfd8

    • SHA512

      f7ea67a4fcc417381002c0f991c1d3910468b62a1d7ecd797d24bffdce4e609c2a29eb9889aacecf7932f3ad816ccb4f1df6b6d62ba1ed2499d48a42008e49ec

    • SSDEEP

      49152:zES0GzPDPtGUE/Nb8HdX+rKXJyCnKhgLn0Hcx:zES0qybydXUyfK2LCM

    Score
    10/10
    dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

    • 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.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • 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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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

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

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks