Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    01/06/2026, 22:54

General

  • Target
    tmpsxfglosi.exe
  • Size 11.7MB
  • Sample260601-2vrhvaas2n
  • SHA256 1ade6c70a70843d6e536ea148a140b308d99192e81fa43864dcbc5e09ce3d595
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 7.2.2 Pro

Botnet
  • 5009

C2
  • 185.218.138.25:5009

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-IVTENG

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 10 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Inno Setup is an open-source installation builder for Windows applications. 5 IoCs

    Inno Setup installer

  • Checks SCSI registry key(s) 3 TTPs 8 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpsxfglosi.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpsxfglosi.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3356
    • C:\Users\Admin\AppData\Local\Temp\is-CSI7DPRBIF.tmp\tmpsxfglosi.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-CSI7DPRBIF.tmp\tmpsxfglosi.tmp" /SL5="$80054,3805804,944640,C:\Users\Admin\AppData\Local\Temp\tmpsxfglosi.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1600
      • C:\Users\Admin\AppData\Local\Temp\tmpsxfglosi.exe
        "C:\Users\Admin\AppData\Local\Temp\tmpsxfglosi.exe" /VERYSILENT /PASSWORD=f6fb6a2f-923a-4833-97b4-624aafb87b0d
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1712
        • C:\Users\Admin\AppData\Local\Temp\is-T7PHBEAAXO.tmp\tmpsxfglosi.tmp
          "C:\Users\Admin\AppData\Local\Temp\is-T7PHBEAAXO.tmp\tmpsxfglosi.tmp" /SL5="$8004A,3805804,944640,C:\Users\Admin\AppData\Local\Temp\tmpsxfglosi.exe" /VERYSILENT /PASSWORD=f6fb6a2f-923a-4833-97b4-624aafb87b0d
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:2948
          • C:\ProgramData\DarkSalmonFireBrick\FnHotkeyUtility.exe
            "C:\ProgramData\DarkSalmonFireBrick\FnHotkeyUtility.exe" --embedded-browser-webview=1
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Checks SCSI registry key(s)
            • Checks processor information in registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:376
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:2912

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          FnHotkeyUtility.exe

          • Path C:\ProgramData\DarkSalmonFireBrick\FnHotkeyUtility.exe
          • Size 1.3MB
          • SHA256 2728e26af764a64dd31f6df20bad9ce68f27a1c54628abf7353a62f5e67a9dff
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSVCP140.dll

          • Path C:\ProgramData\DarkSalmonFireBrick\MSVCP140.dll
          • Size 571KB
          • SHA256 a68a9ac35aa1e183fe3bd9e7144259631530db07502112a339e5e1c8dccc9a31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ludp.dll

          • Path C:\ProgramData\DarkSalmonFireBrick\ludp.dll
          • Size 1.6MB
          • SHA256 a62f73b7cef738ebd9963744665aa85772b428aef214f07f8112ff3816b09241
          • MD5 SHA1 SHA512 SSDEEP TLSH

          spkvol.dll

          • Path C:\ProgramData\DarkSalmonFireBrick\spkvol.dll
          • Size 8.1MB
          • SHA256 c53ea9d106a8e50f3bc398a03ece3d650bf67893b42e7e6fc2283650eec2de0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcruntime140.dll

          • Path C:\ProgramData\DarkSalmonFireBrick\vcruntime140.dll
          • Size 101KB
          • SHA256 5dc711b1f190df5b1257b92883e9c3f10cb4e953591da13dd50d9f0c7a4af695
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcruntime140_1.dll

          • Path C:\ProgramData\DarkSalmonFireBrick\vcruntime140_1.dll
          • Size 46KB
          • SHA256 e30874ceaf6b8dfe72ba67e5c1f21027d79cb3a873a32eb12c5ed89bfa660d1f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tmpsxfglosi.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-CSI7DPRBIF.tmp\tmpsxfglosi.tmp
          • Size 3.6MB
          • SHA256 3535a1b02501679282988fdaf620ad4ecd0537387b59ad9243929718ff45069a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _isdecmp.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-R5MTED7JU7.tmp\_isetup\_isdecmp.dll
          • Size 34KB
          • SHA256 31d04c1e4bfdfa34704c142fa98f80c0a3076e4b312d6ada57c4be9d9c7dcf26
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/376-80-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-72-0x00007FFB89A40000-0x00007FFB89BF1000-memory.dmp

          memory/376-92-0x00007FFB89A40000-0x00007FFB89BF1000-memory.dmp

          memory/376-91-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-90-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-87-0x00007FFB89A40000-0x00007FFB89BF1000-memory.dmp

          memory/376-86-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-85-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-67-0x00007FFB89A40000-0x00007FFB89BF1000-memory.dmp

          memory/376-84-0x00007FFB89A40000-0x00007FFB89BF1000-memory.dmp

          memory/376-82-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-83-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-81-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-74-0x0000000140000000-0x00000001400A8000-memory.dmp

          memory/376-70-0x00007FF75CB00000-0x00007FF75CC54000-memory.dmp

          memory/376-73-0x00007FFB89A40000-0x00007FFB89BF1000-memory.dmp

          memory/1600-18-0x0000000000710000-0x0000000000AC1000-memory.dmp

          memory/1600-5-0x0000000001470000-0x0000000001471000-memory.dmp

          memory/1600-30-0x0000000000710000-0x0000000000AC1000-memory.dmp

          memory/1600-20-0x0000000000710000-0x0000000000AC1000-memory.dmp

          memory/1600-14-0x0000000001470000-0x0000000001471000-memory.dmp

          memory/1600-13-0x0000000000710000-0x0000000000AC1000-memory.dmp

          memory/1712-69-0x00000000002C0000-0x00000000003B6000-memory.dmp

          memory/1712-28-0x00000000002C0000-0x00000000003B6000-memory.dmp

          memory/2948-68-0x0000000000BD0000-0x0000000000F81000-memory.dmp

          memory/2948-34-0x0000000001790000-0x0000000001791000-memory.dmp

          memory/3356-12-0x00000000002C0000-0x00000000003B6000-memory.dmp

          memory/3356-33-0x00000000002C0000-0x00000000003B6000-memory.dmp

          memory/3356-0-0x00000000002C0000-0x00000000003B6000-memory.dmp