Overview

overview

10

Static

static

10

4D95EA8721...5E.exe

windows7-x64

10

4D95EA8721...5E.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2024 16:31

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General

  • Target

    4D95EA8721D0A84B69C2D60951A8A65E.exe

  • Size

    631KB

  • MD5

    4d95ea8721d0a84b69c2d60951a8a65e

  • SHA1

    b3b9230b284c32e8d35c65b6b31d0a1b729c6d7c

  • SHA256

    1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d

  • SHA512

    7500b73aa452a6452fd6fe41df0fbffa96821918df34fcff2a29bf2072f5fdb02886fa0945f5d567fefcf30de6d042b4e17e6760bb5e5a3ceba11767316c3fee

  • SSDEEP

    12288:Cr2N7ewZcHjHkoP19jpVgUbdxGU2NjCa8UQGqIJ7uHXNI8W2Zx:Cr2EEypVg4x8NmtjS+

Score
10/10
dcratinfostealerpersistenceratspywarestealer

Malware Config

Signatures

  • 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 2 TTPs 1 IoCs
    persistence
  • Process spawned unexpected child process 3 IoCs

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

  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

    rat
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\4D95EA8721D0A84B69C2D60951A8A65E.exe
    "C:\Users\Admin\AppData\Local\Temp\4D95EA8721D0A84B69C2D60951A8A65E.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2920
    • C:\Users\Admin\AppData\Local\fontdrvhost.exe
      "C:\Users\Admin\AppData\Local\fontdrvhost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:224
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:/Users/Admin/AppData/Local/\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4556
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2700
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:/Users/Admin/AppData/Local/\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\fontdrvhost.exe
    Filesize

    631KB

    MD5

    4d95ea8721d0a84b69c2d60951a8a65e

    SHA1

    b3b9230b284c32e8d35c65b6b31d0a1b729c6d7c

    SHA256

    1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d

    SHA512

    7500b73aa452a6452fd6fe41df0fbffa96821918df34fcff2a29bf2072f5fdb02886fa0945f5d567fefcf30de6d042b4e17e6760bb5e5a3ceba11767316c3fee

    Download Submit

  • memory/224-58-0x000000001C9B0000-0x000000001CB59000-memory.dmp

    Filesize

    1.7MB

    Download

  • memory/2920-1-0x0000000000FF0000-0x0000000001094000-memory.dmp

    Filesize

    656KB

    Download

  • memory/2920-0-0x00007FFECCF50000-0x00007FFECD145000-memory.dmp

    Filesize

    2.0MB

    Download

  • memory/2920-2-0x00007FFECCF50000-0x00007FFECD145000-memory.dmp

    Filesize

    2.0MB

    Download

  • memory/2920-3-0x0000000003110000-0x000000000312C000-memory.dmp

    Filesize

    112KB

    Download

  • memory/2920-5-0x000000001BBC0000-0x000000001BBD6000-memory.dmp

    Filesize

    88KB

    Download

  • memory/2920-4-0x000000001BC20000-0x000000001BC70000-memory.dmp

    Filesize

    320KB

    Download

  • memory/2920-19-0x00007FFECCF50000-0x00007FFECD145000-memory.dmp

    Filesize

    2.0MB

    Download