Overview

overview

10

Static

static

3

e767887e30...08.exe

windows7-x64

10

e767887e30...08.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908.exe

  • Size

    2.0MB

  • Sample

    241110-dmc4gsyblq

  • MD5

    38924c8184bf5944da2ac3e5cd987da2

  • SHA1

    1af0d4b729dd9c3a42c197a4ec961cab5722adda

  • SHA256

    e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908

  • SHA512

    225e25eb08a1abe529a4fc5eb435eb800145a782e3dbdd6ba1c28925f84d758c18111ed181649bd222d50fd4a44f1ede7e43c630a58ae9a92fd2074d3d306a61

  • SSDEEP

    24576:FcBmS1nneRYZwoKBU7ArlQUCeYIxerW33/XfV6jx9aP5VR/z0WcBS4bppmHVSqyW:9S4/ST6xijxsBEmHVSqFHOHqnCgXu8

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908.exe

    • Size

      2.0MB

    • MD5

      38924c8184bf5944da2ac3e5cd987da2

    • SHA1

      1af0d4b729dd9c3a42c197a4ec961cab5722adda

    • SHA256

      e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908

    • SHA512

      225e25eb08a1abe529a4fc5eb435eb800145a782e3dbdd6ba1c28925f84d758c18111ed181649bd222d50fd4a44f1ede7e43c630a58ae9a92fd2074d3d306a61

    • SSDEEP

      24576:FcBmS1nneRYZwoKBU7ArlQUCeYIxerW33/XfV6jx9aP5VR/z0WcBS4bppmHVSqyW:9S4/ST6xijxsBEmHVSqFHOHqnCgXu8

    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.

    • DCRat payload

      rat

    • 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

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