Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 14:24

General

  • Target

    8e95f3e3ba0a39ae1a2e0b7b4ea7749f59f10b41ce8cb4ced0e56f2459488322.dll

  • Size

    45.1MB

  • MD5

    d8f4aa727d113078157fde6deab4b41b

  • SHA1

    f1dc364beb96a80eec20aaa8e5ab7690a851a3c9

  • SHA256

    8e95f3e3ba0a39ae1a2e0b7b4ea7749f59f10b41ce8cb4ced0e56f2459488322

  • SHA512

    29fbf955a55a8a6da5ba7a6ad692f4fa4fe9c93d1117658128a51e571b860aa8e9e31256a400602bff4dfc7e6a3c5c93e837d1de363c92a40da42202919e3cf4

  • SSDEEP

    786432:8eUP7GCGO7t0Srkx/tC0SzIdSwh/WxbpNHQD3trzRpi:vUP7GCG6iSrkx1hSzYsHQD3t/R0

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

pattreon.duckdns.org:7035

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-KXD2R3

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8e95f3e3ba0a39ae1a2e0b7b4ea7749f59f10b41ce8cb4ced0e56f2459488322.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\8e95f3e3ba0a39ae1a2e0b7b4ea7749f59f10b41ce8cb4ced0e56f2459488322.dll
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2304
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\SysWOW64\regsvr32.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3632
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\ChromeData.dll",EntryPoint /f & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3756
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\ChromeData.dll",EntryPoint /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:5100

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2304-1-0x00000000102E6000-0x0000000010300000-memory.dmp

    Filesize

    104KB

  • memory/2304-0-0x0000000010000000-0x0000000012DD5000-memory.dmp

    Filesize

    45.8MB

  • memory/2304-10-0x0000000010000000-0x0000000012DD5000-memory.dmp

    Filesize

    45.8MB

  • memory/2304-16-0x0000000012D6F000-0x0000000012D76000-memory.dmp

    Filesize

    28KB

  • memory/2304-18-0x00000000102E6000-0x0000000010300000-memory.dmp

    Filesize

    104KB

  • memory/3632-2-0x0000000000D70000-0x0000000000D71000-memory.dmp

    Filesize

    4KB

  • memory/3632-5-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-8-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-6-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-9-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-11-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-12-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-13-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-14-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-15-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-17-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-19-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-20-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-21-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-22-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-23-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-24-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-25-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-26-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-27-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-28-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-29-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-30-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-31-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-32-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-33-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-34-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-35-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-36-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-37-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-38-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-39-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-40-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-41-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-42-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-43-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-44-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-45-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-46-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-47-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-48-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-49-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-50-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-51-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-52-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-53-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-54-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-55-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-56-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-57-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-58-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-59-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-60-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-61-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-62-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-63-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-64-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-65-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-66-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-67-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB

  • memory/3632-68-0x0000000000CE0000-0x0000000000D62000-memory.dmp

    Filesize

    520KB