Analysis

  • max time kernel
    149s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/07/2024, 03:43

General

  • Target
    dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462.exe
  • Size 1.2MB
  • Sample240705-d9wt4ssamm
  • SHA256 dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 204.10.160.230:7983

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-O7QOC3

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462.exe
    "C:\Users\Admin\AppData\Local\Temp\dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:756
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4880
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wTEtBSqxFaPmz.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4644
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wTEtBSqxFaPmz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEEB5.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3804
    • C:\Users\Admin\AppData\Local\Temp\dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462.exe
      "C:\Users\Admin\AppData\Local\Temp\dacf76612ec19aa3f80f070321abac8830e376981ccd5ec4eebd1ba017c6e462.exe"
      2⤵
        PID:2708

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 18KB
          • SHA256 8f7997eae20079eb8a2d9fb6ccb78f42e93e8ee1abb38c598424cd146c2d9f2b
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_rc1wb3la.4pc.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rc1wb3la.4pc.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          tmpEEB5.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmpEEB5.tmp
          • Size 1KB
          • SHA256 05ef313419accbde67e58b16e0e70f7e5a7aad4916169739d93ec8ed83bfc956
          • MD5 SHA1 SHA512

          memory/756-4-0x0000000005930000-0x000000000593A000-memory.dmp

          memory/756-10-0x00000000071D0000-0x000000000726C000-memory.dmp

          memory/756-5-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/756-6-0x0000000005BB0000-0x0000000005BCA000-memory.dmp

          memory/756-7-0x0000000005C30000-0x0000000005C38000-memory.dmp

          memory/756-8-0x0000000003140000-0x000000000314C000-memory.dmp

          memory/756-9-0x00000000070D0000-0x00000000071CE000-memory.dmp

          memory/756-3-0x00000000057A0000-0x0000000005832000-memory.dmp

          memory/756-11-0x000000007510E000-0x000000007510F000-memory.dmp

          memory/756-2-0x0000000005CB0000-0x0000000006254000-memory.dmp

          memory/756-17-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/756-44-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/756-0-0x000000007510E000-0x000000007510F000-memory.dmp

          memory/756-1-0x0000000000C70000-0x0000000000DA0000-memory.dmp

          memory/2708-35-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-34-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-60-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-104-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-102-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-103-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-105-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-38-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-100-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-36-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-59-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-58-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-26-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-101-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-107-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-46-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/2708-106-0x0000000000400000-0x000000000047F000-memory.dmp

          memory/4644-99-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4644-45-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4644-22-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4644-83-0x0000000075990000-0x00000000759DC000-memory.dmp

          memory/4644-23-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4880-18-0x0000000004FF0000-0x0000000005618000-memory.dmp

          memory/4880-75-0x0000000006F50000-0x0000000006FF3000-memory.dmp

          memory/4880-64-0x0000000075990000-0x00000000759DC000-memory.dmp

          memory/4880-63-0x0000000006D10000-0x0000000006D42000-memory.dmp

          memory/4880-77-0x0000000007090000-0x00000000070AA000-memory.dmp

          memory/4880-76-0x00000000076D0000-0x0000000007D4A000-memory.dmp

          memory/4880-78-0x0000000007100000-0x000000000710A000-memory.dmp

          memory/4880-79-0x0000000007310000-0x00000000073A6000-memory.dmp

          memory/4880-80-0x0000000007290000-0x00000000072A1000-memory.dmp

          memory/4880-81-0x00000000072C0000-0x00000000072CE000-memory.dmp

          memory/4880-82-0x00000000072D0000-0x00000000072E4000-memory.dmp

          memory/4880-74-0x0000000006320000-0x000000000633E000-memory.dmp

          memory/4880-93-0x00000000073D0000-0x00000000073EA000-memory.dmp

          memory/4880-94-0x00000000073B0000-0x00000000073B8000-memory.dmp

          memory/4880-96-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4880-57-0x00000000060D0000-0x000000000611C000-memory.dmp

          memory/4880-56-0x0000000005D70000-0x0000000005D8E000-memory.dmp

          memory/4880-39-0x0000000005760000-0x0000000005AB4000-memory.dmp

          memory/4880-37-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4880-27-0x0000000004ED0000-0x0000000004F36000-memory.dmp

          memory/4880-25-0x0000000004E60000-0x0000000004EC6000-memory.dmp

          memory/4880-24-0x0000000004DC0000-0x0000000004DE2000-memory.dmp

          memory/4880-20-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4880-19-0x0000000075100000-0x00000000758B0000-memory.dmp

          memory/4880-16-0x0000000002470000-0x00000000024A6000-memory.dmp