Overview

overview

10

Static

static

3

incore.exe

windows7-x64

10

incore.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    incore.exe

  • Size

    2.1MB

  • Sample

    250207-txmcxaylgx

  • MD5

    03d4e131a10bf6c41d45c0918a9e3ea5

  • SHA1

    e067835a072ceb0d3cc3dd12e8a6d1a43f4d8bb7

  • SHA256

    5daab1d2ee0966832a50b6cc7635707a18d81105d51614c75d106c16ff8012c2

  • SHA512

    225ca4831acbe4a243e033dae107f92e1bbcad6430ae96f0ec8235fd4adf199b5f80f94457a036369816c6e92f5429e4bfb7cc9e5b644d5bf480816f643cefb0

  • SSDEEP

    24576:2TbBv5rUyXVxp8qWcx5AkyZrtziLafchZChMHTzC6SXYdzNyCzrgEctNjfRn5rEp:IBJXcJQLa0hs2HTbbtNhzrgZnp5rEp

Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      incore.exe

    • Size

      2.1MB

    • MD5

      03d4e131a10bf6c41d45c0918a9e3ea5

    • SHA1

      e067835a072ceb0d3cc3dd12e8a6d1a43f4d8bb7

    • SHA256

      5daab1d2ee0966832a50b6cc7635707a18d81105d51614c75d106c16ff8012c2

    • SHA512

      225ca4831acbe4a243e033dae107f92e1bbcad6430ae96f0ec8235fd4adf199b5f80f94457a036369816c6e92f5429e4bfb7cc9e5b644d5bf480816f643cefb0

    • SSDEEP

      24576:2TbBv5rUyXVxp8qWcx5AkyZrtziLafchZChMHTzC6SXYdzNyCzrgEctNjfRn5rEp:IBJXcJQLa0hs2HTbbtNhzrgZnp5rEp

    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.

    • 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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks