Analysis

  • max time kernel
    148s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    02-09-2024 15:38

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:1544
    • 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:2716
    • 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:2984
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SBYYcyqg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp642F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2728
    • C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe
      "C:\Users\Admin\AppData\Local\Temp\396b9c091d6328765df31c29d2e6e5e28f2472d63052ec39447d4325b8f3bf53.exe"
      2⤵
        PID:1668
      • 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:340
        • 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:1824
        • 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:2876
          • 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:1708
          • 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:1928
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SBYYcyqg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB75D.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2180
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:748
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1704
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1984
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1792
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            PID:1696

    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

      ec227b9c0ebfc20ab78a06c9f5c56816

      SHA1

      b2595328dd6fba735bc67f9482cd78f4c64404d7

      SHA256

      2fc57f93b288a4813ea9a3dd1897d4cd58fd4d9775c50190fb7dc42f493d95ef

      SHA512

      ed3c0994a202f477ca575b961e4a3a0e356ccd8afcf1235fc4a527676bcbd06cea971eb6d2fe6e9382da613bf327c5449aeec7986a208aa19cf22cd87d282553

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

      Filesize

      483KB

      MD5

      13e2266694c6d450ed6320e775ea6ca0

      SHA1

      2a700c9c8179aec8c1f3b5e51adf064655694202

      SHA256

      14fafc8d570493d28077c853810754b4f5f7c803a58bf05456d4d197862191b4

      SHA512

      121f24d2433bd3c0b60126259e12ce2c990aef48635f5297ec37db9ce3337301408b6b2f4562936d803341c40e4f68ed51ccc05319920c8d7b0300b007d8600e

    • C:\Users\Admin\AppData\Local\Temp\tmp642F.tmp

      Filesize

      1KB

      MD5

      11c090463656a9c1dbcda767d4f28b40

      SHA1

      89d75d73215649a835eab23827f898d9fbb1e680

      SHA256

      6be28036505d61ae829ff757d113bb098266ffb4faf1aba52b1a1ee92bbe7202

      SHA512

      db8836a1a36097a85b84fc7da049d006825573c3e7255c6792107dc11fdf84a7379371aa687c4036d141af15c1b24b203cdc7eaa2eb4202a46d8dde9a4b0d506

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ZTCXQ5T7WFNAOYLIJT10.temp

      Filesize

      7KB

      MD5

      473ad76336fc81ef8ed8c3f6f6b8abb8

      SHA1

      bcda914a6bfb05f75148a5fd21d5c529fd579a41

      SHA256

      76efcdc916aa0b2170307012f5c676cb1df836203895eb7d1125842347906fed

      SHA512

      63239ab7c17161f7f7d1b4955fb1acf961aba2dd6a597886a6639a23a1f50ccdfaa90bd99f8c9281055c15af578f13001fa0de534e50288ace27a8177eebc1fe

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

      Filesize

      7KB

      MD5

      90cc7bb86e97a778afbc72fab2687830

      SHA1

      959c617813664fac9f1d664150fc27dcf05ec24d

      SHA256

      ff4670174ee69778016e8ef951fef2131bc78748b679ae3e1a97827d6ebdf12f

      SHA512

      dd584ae31708abcb3ca36263f066386c691386b90e818f389f252f85d8c2f1001d1f7c3128bf13bad06b8c734910cb100ac0f8a3a30b684a1c4df1af1cd26d15

    • memory/340-28-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/340-26-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-30-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-20-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-24-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-22-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-36-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-35-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/340-32-0x0000000000400000-0x000000000053B000-memory.dmp

      Filesize

      1.2MB

    • memory/1544-7-0x00000000062B0000-0x000000000642E000-memory.dmp

      Filesize

      1.5MB

    • memory/1544-5-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/1544-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

      Filesize

      4KB

    • memory/1544-6-0x00000000002E0000-0x00000000002F6000-memory.dmp

      Filesize

      88KB

    • memory/1544-39-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/1544-4-0x00000000749FE000-0x00000000749FF000-memory.dmp

      Filesize

      4KB

    • memory/1544-3-0x00000000009A0000-0x00000000009BE000-memory.dmp

      Filesize

      120KB

    • memory/1544-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

      Filesize

      6.9MB

    • memory/1544-1-0x00000000009C0000-0x0000000000ED6000-memory.dmp

      Filesize

      5.1MB

    • memory/2876-63-0x00000000003F0000-0x0000000000906000-memory.dmp

      Filesize

      5.1MB