Overview

overview

10

Static

static

3

Attach.exe

windows10-ltsc 2021-x64

10

Resubmissions

17-01-2025 15:49

250117-s9jbcavjgz 10

17-01-2025 15:45

250117-s7d9lsvmdl 8

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General

  • Target

    Attach.exe

  • Size

    12KB

  • Sample

    250117-s9jbcavjgz

  • MD5

    e9932c15bab57210fd2b5d03b50529f6

  • SHA1

    25835a6c7ef22d0aa10d20df7d29805de7e662cc

  • SHA256

    a39231d9cc51041982d93288f4201c2d4cc43242824fbb93ac0f4f459dd6b983

  • SHA512

    b1e35a7f19767773ef15a6133e3f3337033e71f551f8342efdd0cc3215fc9f3fa16c97c141bfd41e7a61f139329648451da0f79966e69ae5be6693ac1074996d

  • SSDEEP

    192:t9tgZnq4y19iy+Cv3QotaxwfZVzbmQMyL79zcB9Dil7jOCcSwh8:tsZnq9lxv3Q4ZVzbmhytC1il7jtclh

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      Attach.exe

    • Size

      12KB

    • MD5

      e9932c15bab57210fd2b5d03b50529f6

    • SHA1

      25835a6c7ef22d0aa10d20df7d29805de7e662cc

    • SHA256

      a39231d9cc51041982d93288f4201c2d4cc43242824fbb93ac0f4f459dd6b983

    • SHA512

      b1e35a7f19767773ef15a6133e3f3337033e71f551f8342efdd0cc3215fc9f3fa16c97c141bfd41e7a61f139329648451da0f79966e69ae5be6693ac1074996d

    • SSDEEP

      192:t9tgZnq4y19iy+Cv3QotaxwfZVzbmQMyL79zcB9Dil7jOCcSwh8:tsZnq9lxv3Q4ZVzbmhytC1il7jtclh

    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

    • Downloads MZ/PE file

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    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

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 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