Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    03-09-2024 01:30

General

  • Target

    396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe

  • Size

    5.1MB

  • MD5

    aa1c1ce4915e430238dd1579fe0ee320

  • SHA1

    6df35550b84eb4b2648a09ff2be348ee326e7e78

  • SHA256

    396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53

  • SHA512

    04d46c3d8f73941b017b8c64302eebffe7a77a39d63c83dfbc5f71e45d1824557ea174dcc36c9ec82a4a176ae72ef840457855a11724314d255775b548f19d2e

  • SSDEEP

    98304:xXZvnKYEUwMXKCEXZvnKYEUwMXKC6XZvnKYEUwMXKC:xtnf3rXJEtnf3rXJ6tnf3rXJ

Malware Config

Extracted

Family

remcos

Botnet

Rain

C2

nzobaku.ddns.net:8081

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-OVTDA2

  • 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 4 IoCs

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

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe
    "C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2416
    • 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\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2800
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SBYYcyqg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:588
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SBYYcyqg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2BA2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2756
    • C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe
      "C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe"
      2⤵
        PID:2636
      • C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe
        "C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe"
        2⤵
        • Loads dropped DLL
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Users\Admin\AppData\Local\Temp\._cache_396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe
          "C:\Users\Admin\AppData\Local\Temp\._cache_396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:2864
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2936
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3040
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SBYYcyqg.exe"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2360
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SBYYcyqg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp820B.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2480
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1676
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:840
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1320
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1272
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1856

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Synaptics\Synaptics.exe

      Filesize

      5.1MB

      MD5

      aa1c1ce4915e430238dd1579fe0ee320

      SHA1

      6df35550b84eb4b2648a09ff2be348ee326e7e78

      SHA256

      396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53

      SHA512

      04d46c3d8f73941b017b8c64302eebffe7a77a39d63c83dfbc5f71e45d1824557ea174dcc36c9ec82a4a176ae72ef840457855a11724314d255775b548f19d2e

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      54774fbf41b0e53e191d20d0a6c005b5

      SHA1

      0b7caf5ef5a17ed7012f63c5738cd53493ef4c38

      SHA256

      3841639fc164e87ac6ccc91cc9d5e5bfb0fb941b08ed873773be954d2d803965

      SHA512

      a801c05d8df608055e2d6a1579053432c0449e75754865817d41d4ecc4d1ba8ba4602eae343a23515d801dafdae38ada7d0bd838b1afc399da49f5fc5e0f8bd0

    • C:\Users\Admin\AppData\Local\Temp\tmp2BA2.tmp

      Filesize

      1KB

      MD5

      9921ec226a2318d86cfa51aca3091786

      SHA1

      c5342a53cd3ab32f88ea615b3f4cee48cd72403d

      SHA256

      be51f69ee2b71e0bf8c3e9875e992165e97c55a7c1ed7c80d3ded27f79bc6f21

      SHA512

      30bcc58a7f15c5c12d64c7ea799f8ad16adf0ea74090e0ec378dfd29d88ef45e65ed2b8fab94a8510c65b56f9a3322b604915f0d4c5844bf33cd24f1d41cbbe0

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4U9WO652SQTXVUNP798T.temp

      Filesize

      7KB

      MD5

      d28b4787024403577e68d9ba4f816962

      SHA1

      71ae1085bcefacbbd17cef541425ffacf97527c3

      SHA256

      77d15df8b310b5713bea70b106a4c281c16433482f0657ff0936c086166c23ca

      SHA512

      e4cd57ad3a0334203dc31b2840be5999b5093cad2039e29218f84986cef1fc982bae9327ce950145d75dd66ca0fcc28f9b01a8f8258d469416dcd7f53d19864a

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      df40e0b44ae11499e630bf16103817f9

      SHA1

      5ef6e38a14d1eacee3dcd0cf1c217e1c383420ed

      SHA256

      5d39b79b8eb22d0e51eb66760f80caf1ea834545db6a08fb5a57e01034ec6408

      SHA512

      9a5a10ac31e1708b15d288d85a56e769e424ff012b6e5ad6ac72e0ba5d3d4c682de6ec95bdeadc08ec86d136dc587c3adb25e2b735ac357d2625de71ad276517

    • \Users\Admin\AppData\Local\Temp\._cache_396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe

      Filesize

      483KB

      MD5

      13e2266694c6d450ed6320e775ea6ca0

      SHA1

      2a700c9c8179aec8c1f3b5e51adf064655694202

      SHA256

      14fafc8d570493d28077c853810754b4f5f7c803a58bf05456d4d197862191b4

      SHA512

      121f24d2433bd3c0b60126259e12ce2c990aef48635f5297ec37db9ce3337301408b6b2f4562936d803341c40e4f68ed51ccc05319920c8d7b0300b007d8600e

    • memory/2416-4-0x000000007425E000-0x000000007425F000-memory.dmp

      Filesize

      4KB

    • memory/2416-7-0x000000000A6F0000-0x000000000A86E000-memory.dmp

      Filesize

      1.5MB

    • memory/2416-6-0x0000000000290000-0x00000000002A6000-memory.dmp

      Filesize

      88KB

    • memory/2416-5-0x0000000074250000-0x000000007493E000-memory.dmp

      Filesize

      6.9MB

    • memory/2416-3-0x0000000000410000-0x000000000042E000-memory.dmp

      Filesize

      120KB

    • memory/2416-2-0x0000000074250000-0x000000007493E000-memory.dmp

      Filesize

      6.9MB

    • memory/2416-0-0x000000007425E000-0x000000007425F000-memory.dmp

      Filesize

      4KB

    • memory/2416-39-0x0000000074250000-0x000000007493E000-memory.dmp

      Filesize

      6.9MB

    • memory/2416-1-0x0000000000E10000-0x0000000001326000-memory.dmp

      Filesize

      5.1MB

    • memory/2936-66-0x0000000000A50000-0x0000000000A66000-memory.dmp

      Filesize

      88KB

    • memory/2936-63-0x00000000002A0000-0x00000000007B6000-memory.dmp

      Filesize

      5.1MB

    • memory/2996-36-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-26-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-24-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-20-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-28-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-32-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2996-35-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-30-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/2996-22-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB