Overview

overview

10

Static

static

10

d0fd0bf712...05.exe

windows7-x64

10

d0fd0bf712...05.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    d0fd0bf712a82cff8a13381300b480c0f792f94e846f729ea787fa901ffe1805

  • Size

    857KB

  • Sample

    241201-tdzh5avqdv

  • MD5

    31c3f45b0054b2592dfbe98cc2b2ae6f

  • SHA1

    b3b09b956a490a2558ffd7a5bd75cad36198ad85

  • SHA256

    d0fd0bf712a82cff8a13381300b480c0f792f94e846f729ea787fa901ffe1805

  • SHA512

    737face1e81289120aecb19e64073c6c8bb4bd4efcbe4277a6a567e504267c9f82783973b55e08b1c9007521da7256c8494234eb5c57290ed71fba01c6bb5656

  • SSDEEP

    12288:JWTnfLcX02i56n+XomvfJJMA+ApW3Ari4VVyZC0+1cw2jINofMVbmsaxZ6:JWTnZ20XomvhJMA+A3iE0nHp6

Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      d0fd0bf712a82cff8a13381300b480c0f792f94e846f729ea787fa901ffe1805

    • Size

      857KB

    • MD5

      31c3f45b0054b2592dfbe98cc2b2ae6f

    • SHA1

      b3b09b956a490a2558ffd7a5bd75cad36198ad85

    • SHA256

      d0fd0bf712a82cff8a13381300b480c0f792f94e846f729ea787fa901ffe1805

    • SHA512

      737face1e81289120aecb19e64073c6c8bb4bd4efcbe4277a6a567e504267c9f82783973b55e08b1c9007521da7256c8494234eb5c57290ed71fba01c6bb5656

    • SSDEEP

      12288:JWTnfLcX02i56n+XomvfJJMA+ApW3Ari4VVyZC0+1cw2jINofMVbmsaxZ6:JWTnZ20XomvhJMA+A3iE0nHp6

    Score
    10/10
    dcratdiscoveryexecutioninfostealerpersistencerat

    • 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.

    • DCRat payload

      rat

    • 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

    • 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

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

Command and Control

Exfiltration

Impact

Tasks