Overview

overview

10

Static

static

3

B379F4AC16...1D.exe

windows7-x64

10

B379F4AC16...1D.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    B379F4AC167609D8A3EF26444098B61D.exe

  • Size

    1.9MB

  • Sample

    241111-3pegrsylex

  • MD5

    b379f4ac167609d8a3ef26444098b61d

  • SHA1

    85fe0bbbe666d72a955ee98444415194e00739eb

  • SHA256

    430cba76bb21f0ff671a5345c15a51bd047b0f5aecf764ef4668ae9085d22b80

  • SHA512

    0028141132f1437ff556a00e7cd32298bf561690fd809f361fcfaf9b8837e5a173f4acb192b25668550e2ec526ea4a518ea46e3fd7c2e1b8fad1a49d8d6ed0fe

  • SSDEEP

    24576:qhNLIZG9ZdCvfOqBlRF7kVkHreh1kEGD/5MTgsxjY9gIBiatkZ2hIHirkUP7oM8j:qGfj7rk+CLN9EIshijMX6i5w

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      B379F4AC167609D8A3EF26444098B61D.exe

    • Size

      1.9MB

    • MD5

      b379f4ac167609d8a3ef26444098b61d

    • SHA1

      85fe0bbbe666d72a955ee98444415194e00739eb

    • SHA256

      430cba76bb21f0ff671a5345c15a51bd047b0f5aecf764ef4668ae9085d22b80

    • SHA512

      0028141132f1437ff556a00e7cd32298bf561690fd809f361fcfaf9b8837e5a173f4acb192b25668550e2ec526ea4a518ea46e3fd7c2e1b8fad1a49d8d6ed0fe

    • SSDEEP

      24576:qhNLIZG9ZdCvfOqBlRF7kVkHreh1kEGD/5MTgsxjY9gIBiatkZ2hIHirkUP7oM8j:qGfj7rk+CLN9EIshijMX6i5w

    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

    • 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