Overview

overview

10

Static

static

3

a447b03f13...8b.exe

windows7-x64

10

a447b03f13...8b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a447b03f131289f91c8fc4e22ab9b54d362e7771e7ce7518463ea6634cce5c8b

  • Size

    1.8MB

  • Sample

    250328-t1z36syvay

  • MD5

    7aeff3c38c61da155b557c651866241d

  • SHA1

    5d17e805d332b43df01153884c040524cc150f4b

  • SHA256

    a447b03f131289f91c8fc4e22ab9b54d362e7771e7ce7518463ea6634cce5c8b

  • SHA512

    364ce21ba3427e0951f274b8ac7ba76e9e18877d3a49bd3de1ff24525d0f499f9c2ec2b0336a266852d308bfcb3e02c977c512b0b3917df3e497965fc3b9c72e

  • SSDEEP

    24576:N9US2Qh9vbixa8FAPOZEl2dQE98Kt7fgZizgXVWA1CiFoe9+Qoi8M3wfCI9GfkW2:N9LPOIK5ui8pciKi+QoW3wD9aFuH

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      a447b03f131289f91c8fc4e22ab9b54d362e7771e7ce7518463ea6634cce5c8b

    • Size

      1.8MB

    • MD5

      7aeff3c38c61da155b557c651866241d

    • SHA1

      5d17e805d332b43df01153884c040524cc150f4b

    • SHA256

      a447b03f131289f91c8fc4e22ab9b54d362e7771e7ce7518463ea6634cce5c8b

    • SHA512

      364ce21ba3427e0951f274b8ac7ba76e9e18877d3a49bd3de1ff24525d0f499f9c2ec2b0336a266852d308bfcb3e02c977c512b0b3917df3e497965fc3b9c72e

    • SSDEEP

      24576:N9US2Qh9vbixa8FAPOZEl2dQE98Kt7fgZizgXVWA1CiFoe9+Qoi8M3wfCI9GfkW2:N9LPOIK5ui8pciKi+QoW3wD9aFuH

    Score
    10/10
    dcratinfostealerratdiscoveryexecutionpersistencespywarestealer

    • 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