Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 08:21

General

  • Target
    07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe
  • Size 1.0MB
  • Sample240507-j9g9lsbc27
  • SHA256 d78c12bb59e191eb8888d2e6b362c9b129d4dbc6cd4c01a92521cb5248130e42
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 62.169.28.238:2404

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-PXKS5J

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xUEjCesVusa.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3844
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xUEjCesVusa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB8C1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3240
    • C:\Users\Admin\AppData\Local\Temp\07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe
      "C:\Users\Admin\AppData\Local\Temp\07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe"
      2⤵
        PID:3564
      • C:\Users\Admin\AppData\Local\Temp\07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe
        "C:\Users\Admin\AppData\Local\Temp\07a0ff1082f838c5cc828521fa57bfd0_NEAS.exe"
        2⤵
          PID:4912

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            __PSScriptPolicyTest_4lxiokqs.waa.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4lxiokqs.waa.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            tmpB8C1.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\tmpB8C1.tmp
            • Size 1KB
            • SHA256 6e9bab5fccadf871424956f984215edab1a3184e01f3d36fa00bca2d4aa87de2
            • MD5 SHA1 SHA512

            memory/2124-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

            memory/2124-1-0x0000000000C70000-0x0000000000D7E000-memory.dmp

            memory/2124-2-0x0000000005DD0000-0x0000000006374000-memory.dmp

            memory/2124-3-0x0000000005820000-0x00000000058B2000-memory.dmp

            memory/2124-4-0x0000000005910000-0x000000000591A000-memory.dmp

            memory/2124-5-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/2124-6-0x0000000005D80000-0x0000000005D9C000-memory.dmp

            memory/2124-7-0x0000000005DB0000-0x0000000005DBE000-memory.dmp

            memory/2124-8-0x0000000006AA0000-0x0000000006AB6000-memory.dmp

            memory/2124-9-0x0000000007180000-0x0000000007240000-memory.dmp

            memory/2124-10-0x0000000009790000-0x000000000982C000-memory.dmp

            memory/2124-11-0x00000000745FE000-0x00000000745FF000-memory.dmp

            memory/2124-12-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/2124-34-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/3844-22-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/3844-67-0x0000000007780000-0x0000000007794000-memory.dmp

            memory/3844-20-0x0000000005390000-0x00000000059B8000-memory.dmp

            memory/3844-21-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/3844-63-0x00000000077C0000-0x0000000007856000-memory.dmp

            memory/3844-28-0x0000000005A30000-0x0000000005A96000-memory.dmp

            memory/3844-33-0x0000000005BA0000-0x0000000005EF4000-memory.dmp

            memory/3844-17-0x0000000002870000-0x00000000028A6000-memory.dmp

            memory/3844-27-0x00000000059C0000-0x0000000005A26000-memory.dmp

            memory/3844-26-0x00000000052E0000-0x0000000005302000-memory.dmp

            memory/3844-72-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/3844-69-0x0000000007860000-0x0000000007868000-memory.dmp

            memory/3844-68-0x0000000007880000-0x000000000789A000-memory.dmp

            memory/3844-19-0x00000000745F0000-0x0000000074DA0000-memory.dmp

            memory/3844-66-0x0000000007770000-0x000000000777E000-memory.dmp

            memory/3844-44-0x0000000006220000-0x000000000623E000-memory.dmp

            memory/3844-45-0x00000000062B0000-0x00000000062FC000-memory.dmp

            memory/3844-46-0x00000000071F0000-0x0000000007222000-memory.dmp

            memory/3844-47-0x0000000070DE0000-0x0000000070E2C000-memory.dmp

            memory/3844-57-0x00000000067C0000-0x00000000067DE000-memory.dmp

            memory/3844-58-0x0000000007430000-0x00000000074D3000-memory.dmp

            memory/3844-64-0x0000000007740000-0x0000000007751000-memory.dmp

            memory/3844-60-0x0000000007B90000-0x000000000820A000-memory.dmp

            memory/3844-61-0x0000000007540000-0x000000000755A000-memory.dmp

            memory/3844-62-0x00000000075B0000-0x00000000075BA000-memory.dmp

            memory/4912-76-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-98-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-65-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-24-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-25-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-31-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-32-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-29-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-73-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-74-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-75-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-23-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-77-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-78-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-79-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-80-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-81-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-82-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-83-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-84-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-85-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-86-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-87-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-88-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-89-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-90-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-91-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-92-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-93-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-94-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-95-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-96-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-97-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-59-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-99-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-100-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-101-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-102-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-103-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-104-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-105-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-106-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-107-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-108-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-109-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-110-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-111-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-112-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-113-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-114-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-115-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-116-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-117-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-118-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-119-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-120-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-121-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-122-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-123-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-124-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-125-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-126-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-127-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-128-0x0000000000400000-0x0000000000482000-memory.dmp

            memory/4912-129-0x0000000000400000-0x0000000000482000-memory.dmp