Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 01:22

General

  • Target

    61fc662a678c75e1f17ee6bb00ef853c6d51bd4ae90616c8ed4995c45e96206d.exe

  • Size

    1.3MB

  • MD5

    a55159c7edc073d452e4fef92d247997

  • SHA1

    d239b25b2a33a64134f11d2d2ac5c7a89e186a29

  • SHA256

    61fc662a678c75e1f17ee6bb00ef853c6d51bd4ae90616c8ed4995c45e96206d

  • SHA512

    5189f51ce0f90a71e86e53ea23d564d796536c45db8c8f4a11e75947bb4fc0d2489c83899e4a8e8b81504007ccad7a05dc8ac02b0d47a52ea565396a27c5e8b3

  • SSDEEP

    24576:AP+g7Wy3xfMZKdcKtTjbJ4jEEEEEEEEEEEEEEEEEEEETKKKKKKKKKKKKKKKKKKK7:A/iy3g6TjbIEEEEEEEEEEEEEEEEEEEE+

Malware Config

Extracted

Family

remcos

Botnet

FmGlobal

C2

royaldachpharmacy.duckdns.org:6395

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    services.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-GRT17F

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 19 IoCs
  • Detects executables built or packed with MPress PE compressor 17 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 3 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 3 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 4 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61fc662a678c75e1f17ee6bb00ef853c6d51bd4ae90616c8ed4995c45e96206d.exe
    "C:\Users\Admin\AppData\Local\Temp\61fc662a678c75e1f17ee6bb00ef853c6d51bd4ae90616c8ed4995c45e96206d.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4532
    • C:\Windows\SysWOW64\extrac32.exe
      C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\61fc662a678c75e1f17ee6bb00ef853c6d51bd4ae90616c8ed4995c45e96206d.exe C:\\Users\\Public\\Libraries\\Eoosrcxm.PIF
      2⤵
        PID:216
      • C:\ProgramData\Remcos\services.exe
        "C:\ProgramData\Remcos\services.exe"
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4464
        • C:\ProgramData\Remcos\services.exe
          C:\ProgramData\Remcos\services.exe /stext "C:\Users\Admin\AppData\Local\Temp\upadbzftngulwcwrvqreeebidgyt"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:2316
        • C:\ProgramData\Remcos\services.exe
          C:\ProgramData\Remcos\services.exe /stext "C:\Users\Admin\AppData\Local\Temp\frgwcspvbomqgikdmbegpqvzemiuofgm"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook accounts
          PID:4584
        • C:\ProgramData\Remcos\services.exe
          C:\ProgramData\Remcos\services.exe /stext "C:\Users\Admin\AppData\Local\Temp\pllg"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2436

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Remcos\logs.dat
      Filesize

      144B

      MD5

      1612a2409475740b324ae4d164f709bd

      SHA1

      5b319ead5c57598133e630eb164592b2b26923c9

      SHA256

      5fb10759e90424de15fa12710f2198bb86219e96447f7795bf0bc86f03de3b02

      SHA512

      39bc994a7b7f8e4d5b6a3fb36df98fc2a4c9c991a2e200fb40d77bbce41b6f19b6ee2d4dd1bfae2638a88f38e28b1e12cfb324e9e4b032fcc5ad55edc970a61e

    • C:\ProgramData\Remcos\services.exe
      Filesize

      1.3MB

      MD5

      a55159c7edc073d452e4fef92d247997

      SHA1

      d239b25b2a33a64134f11d2d2ac5c7a89e186a29

      SHA256

      61fc662a678c75e1f17ee6bb00ef853c6d51bd4ae90616c8ed4995c45e96206d

      SHA512

      5189f51ce0f90a71e86e53ea23d564d796536c45db8c8f4a11e75947bb4fc0d2489c83899e4a8e8b81504007ccad7a05dc8ac02b0d47a52ea565396a27c5e8b3

    • C:\Users\Admin\AppData\Local\Temp\upadbzftngulwcwrvqreeebidgyt
      Filesize

      4KB

      MD5

      135c60fadfa99b241d9109417db8b53c

      SHA1

      b73785818a32e8d84bb55c02ccdc3d546a615526

      SHA256

      01fc52f877352f6252d3d9351993fc35d7b6b0051ac6d3146184e12f9bc6e704

      SHA512

      76812b91e51f1a206e3829b44cf13ee4cc4e5e90d88c0b0b3755b1e092eee26e6a4b18ef038a311a9443dab138761ff45fdd18145931207764c2355047611f51

    • memory/2316-33-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2316-56-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2316-28-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2316-34-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2316-31-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2436-52-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2436-45-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2436-47-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2436-48-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2436-49-0x0000000000430000-0x00000000004F9000-memory.dmp
      Filesize

      804KB

    • memory/4464-27-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-70-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-104-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-103-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-24-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-23-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-22-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-93-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-92-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-82-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-25-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-21-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-20-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-32-0x0000000000400000-0x000000000055C000-memory.dmp
      Filesize

      1.4MB

    • memory/4464-19-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-16-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-40-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-63-0x0000000045F20000-0x0000000045F39000-memory.dmp
      Filesize

      100KB

    • memory/4464-62-0x0000000045F20000-0x0000000045F39000-memory.dmp
      Filesize

      100KB

    • memory/4464-60-0x0000000045F20000-0x0000000045F39000-memory.dmp
      Filesize

      100KB

    • memory/4464-15-0x0000000002530000-0x0000000002531000-memory.dmp
      Filesize

      4KB

    • memory/4464-64-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-81-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4464-71-0x000000002DB00000-0x000000002EB00000-memory.dmp
      Filesize

      16.0MB

    • memory/4532-14-0x0000000000400000-0x000000000055C000-memory.dmp
      Filesize

      1.4MB

    • memory/4532-0-0x0000000002460000-0x0000000002461000-memory.dmp
      Filesize

      4KB

    • memory/4584-51-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4584-35-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4584-37-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4584-38-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4584-39-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB