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Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09/12/2024, 02:26

General

  • Target

    7053c8d9983dc949e5d559ba1b006b8ba9c059a23e06cd87c857c3d04201381b.exe

  • Size

    832KB

  • MD5

    f443c222255e35ee6dd0e194360c23ce

  • SHA1

    a8c84df31a575ab84e6255b89351ce877c9619c8

  • SHA256

    7053c8d9983dc949e5d559ba1b006b8ba9c059a23e06cd87c857c3d04201381b

  • SHA512

    ca58f238cf2599fabd5c34faa34630e2f158cc87a612ad1783a5982b7c835bf7941ee68699dc3e9486f01b578caf6ac53a15f22b92398aa32c8d8742d202fe53

  • SSDEEP

    12288:OeB1Nd/75yaHV5epXyU8+uggQdbGqDEEiHczNGNB4aEPvl1bDDdOJVe3e+mraL:OW1D5yeV5eNyB7QtHDE3HcE0DA8mraL

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.210.150.26:3678

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-MKYDDH

  • 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.

  • Remcos family
  • UAC bypass 3 TTPs 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • 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.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 4 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7053c8d9983dc949e5d559ba1b006b8ba9c059a23e06cd87c857c3d04201381b.exe
    "C:\Users\Admin\AppData\Local\Temp\7053c8d9983dc949e5d559ba1b006b8ba9c059a23e06cd87c857c3d04201381b.exe"
    1⤵
    • UAC bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2216
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\7053c8d9983dc949e5d559ba1b006b8ba9c059a23e06cd87c857c3d04201381b.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2568
    • C:\Windows\System32\notepad.exe
      "C:\Windows\System32\notepad.exe"
      2⤵
        PID:2840
      • C:\Windows\System32\calc.exe
        "C:\Windows\System32\calc.exe"
        2⤵
          PID:2564
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
          2⤵
            PID:3056
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
            2⤵
              PID:1300
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe"
              2⤵
                PID:2108
              • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
                "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
                2⤵
                • Suspicious use of SetThreadContext
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:2504
                • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
                  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\utpjdppyqvpxd"
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2520
                • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
                  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\wvucdhasedhkftmzh"
                  3⤵
                  • Accesses Microsoft Outlook accounts
                  • System Location Discovery: System Language Discovery
                  PID:2600
                • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
                  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\hqimealtalzophalqhxl"
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1624
              • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
                "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
                2⤵
                  PID:1720

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\remcos\logs.dat

                Filesize

                144B

                MD5

                aa9a4b3f392b68f63e9d4682b318417c

                SHA1

                f33810b46263d4f1cf090b8ff79d1e78f19b16d7

                SHA256

                fea1969b5e52311cb485592e3275482aeda145b32a878b6345a3439ddaf93a11

                SHA512

                a5efe216f3ac80ceedbed8266c4da4c7dce2c569ba541bb9c1a1131bcb7fb5af5c9dce96632e6737e19ee3182250db7c39d1303a76c4f7a9b79639a08f9d4e04

              • C:\Users\Admin\AppData\Local\Temp\utpjdppyqvpxd

                Filesize

                2B

                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • memory/2216-74-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

                Filesize

                9.9MB

              • memory/2216-3-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

                Filesize

                9.9MB

              • memory/2216-2-0x000000001AF90000-0x000000001B060000-memory.dmp

                Filesize

                832KB

              • memory/2216-1-0x0000000000F60000-0x0000000001034000-memory.dmp

                Filesize

                848KB

              • memory/2216-0-0x000007FEF54C3000-0x000007FEF54C4000-memory.dmp

                Filesize

                4KB

              • memory/2504-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                Filesize

                4KB

              • memory/2504-68-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2504-69-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2504-73-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2504-72-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2504-67-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2568-28-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

                Filesize

                2.9MB

              • memory/2568-29-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

                Filesize

                32KB

              • memory/2840-4-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2840-8-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2840-9-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2840-10-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2840-11-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB

              • memory/2840-6-0x0000000000400000-0x000000000047F000-memory.dmp

                Filesize

                508KB