Overview

overview

10

Static

static

3

starter.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    starter.exe

  • Size

    2.7MB

  • Sample

    250123-jmnswaznbw

  • MD5

    a2c7f33b3aaf2b9c8c83a6fc8f3557d3

  • SHA1

    2e221f4302dab0406047730b6a00f41ba50026f1

  • SHA256

    dac550df5cc55821ef50537529790217fce473b75d590c5574e4f591faf58e4d

  • SHA512

    0b87aaac5ce731af9626cbc1cb6b57c6c88639c369e6a1b1fbe837cb39492e0d8c62c0413089b505cbbf7682e70291424b845965dbe7152d718f096bb784445c

  • SSDEEP

    49152:BaxMakFibE1xjiFzt/BcB91FpttORQCs1tMfxkmXVamXT:oMiI1tYztSBH/Na5kmXVhT

Score
10/10
dcratumbraldefense_evasiondiscoveryexecutioninfostealerpersistenceratspywarestealertrojan

Malware Config

Targets

    • Target

      starter.exe

    • Size

      2.7MB

    • MD5

      a2c7f33b3aaf2b9c8c83a6fc8f3557d3

    • SHA1

      2e221f4302dab0406047730b6a00f41ba50026f1

    • SHA256

      dac550df5cc55821ef50537529790217fce473b75d590c5574e4f591faf58e4d

    • SHA512

      0b87aaac5ce731af9626cbc1cb6b57c6c88639c369e6a1b1fbe837cb39492e0d8c62c0413089b505cbbf7682e70291424b845965dbe7152d718f096bb784445c

    • SSDEEP

      49152:BaxMakFibE1xjiFzt/BcB91FpttORQCs1tMfxkmXVamXT:oMiI1tYztSBH/Na5kmXVhT

    Score
    10/10
    dcratumbraldefense_evasiondiscoveryexecutioninfostealerpersistenceratspywarestealertrojan

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Detect Umbral payload

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

      defense_evasiontrojan

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

      stealerumbral

    • Umbral family

      umbral

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Drops file in Drivers directory

    • 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

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Legitimate hosting services abused for malware hosting/C2

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1

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

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

3
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

4
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

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks