Overview

overview

10

Static

static

3

Nursultan Alpha.exe

windows7-x64

10

Nursultan Alpha.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Nursultan Alpha.exe

  • Size

    1.8MB

  • Sample

    241115-21mf3svbmk

  • MD5

    a0645e34ac6cb9437068b77b866359d3

  • SHA1

    18336dcb1df21c059424ab7a39fda24917ed17db

  • SHA256

    be0eac22d3c922d2b394a32b3bb0721c27f0fe1fbfa8c062db3c81b8b9d57fea

  • SHA512

    07340cc1d83997031bf20831a1f01700fbce98a294d8135cd4aa4c3d5f43b035faaee9a6c127766e802e018c98835358be268f3aac24a84a82317510c87a4968

  • SSDEEP

    24576:HTbBv5rUr3617t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWy:BBw6Bt7R0wJ4L5Uw5lCCyG31oIPmy

Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      Nursultan Alpha.exe

    • Size

      1.8MB

    • MD5

      a0645e34ac6cb9437068b77b866359d3

    • SHA1

      18336dcb1df21c059424ab7a39fda24917ed17db

    • SHA256

      be0eac22d3c922d2b394a32b3bb0721c27f0fe1fbfa8c062db3c81b8b9d57fea

    • SHA512

      07340cc1d83997031bf20831a1f01700fbce98a294d8135cd4aa4c3d5f43b035faaee9a6c127766e802e018c98835358be268f3aac24a84a82317510c87a4968

    • SSDEEP

      24576:HTbBv5rUr3617t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWy:BBw6Bt7R0wJ4L5Uw5lCCyG31oIPmy

    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

    • 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

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

5
T1012

Remote System Discovery

1
T1018

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks