Overview

overview

10

Static

static

3

7e3a3ff9f8...18.exe

windows7-x64

10

7e3a3ff9f8...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    7e3a3ff9f8bf5cf600b4847cc650c5db7e7a83d4a5c62234cb691d470ec16e18

  • Size

    2.1MB

  • Sample

    250117-dr43rs1lfq

  • MD5

    4c2ac1b00484674f9b5792d4c582d73b

  • SHA1

    f25bbeae4c50ac942e3c01a2db1f615700716688

  • SHA256

    7e3a3ff9f8bf5cf600b4847cc650c5db7e7a83d4a5c62234cb691d470ec16e18

  • SHA512

    04b5d49a32a73bc0dba4fe1bb2a611adaebf6311cf1b7d835c3681e436082590674ebb5d24c94a17abd43a9d76d5485da3a0f9182c5938a19087f1e4c6717246

  • SSDEEP

    49152:G2UiJArUq4MfX+6o5bXzATJYNHTQwcrw6FT9LKd5EdoT6:G2dJAQMGh5DzATJaSw6FTE02m

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      7e3a3ff9f8bf5cf600b4847cc650c5db7e7a83d4a5c62234cb691d470ec16e18

    • Size

      2.1MB

    • MD5

      4c2ac1b00484674f9b5792d4c582d73b

    • SHA1

      f25bbeae4c50ac942e3c01a2db1f615700716688

    • SHA256

      7e3a3ff9f8bf5cf600b4847cc650c5db7e7a83d4a5c62234cb691d470ec16e18

    • SHA512

      04b5d49a32a73bc0dba4fe1bb2a611adaebf6311cf1b7d835c3681e436082590674ebb5d24c94a17abd43a9d76d5485da3a0f9182c5938a19087f1e4c6717246

    • SSDEEP

      49152:G2UiJArUq4MfX+6o5bXzATJYNHTQwcrw6FT9LKd5EdoT6:G2dJAQMGh5DzATJaSw6FTE02m

    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

    • 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

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

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