Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    29-08-2024 01:07

General

  • Target

    1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

  • Size

    927KB

  • MD5

    339dcd1a52b9095623e72c678f20ed01

  • SHA1

    a2bd542dcddefc2ece12e47b380bc343ead31604

  • SHA256

    1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60

  • SHA512

    06b4ab19a5cd8957d879ed141e9d9ad5a0c4898d2bb460f4796d2d04014a67a10fe00bc6243a8936c8ec1b9be7d6cf4ce1a8a6c278067e6ea86ed5a2d40150a7

  • SSDEEP

    24576:JBKlj3XZEwjwxSonfaM00VMNSfQ/woYhkToooZ:2ljHZncct7IoY9bZ

Malware Config

Extracted

Family

remcos

Botnet

BCV

C2

tvq3101.sytes.net:1974

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-9PFUGS

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • 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 6 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
    "C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2672
    • 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\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2836
    • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
      "C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2560
      • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
        C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\cakzejayofylgrewghuxcvcdfkgoyf"
        3⤵
          PID:1396
        • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
          C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\cakzejayofylgrewghuxcvcdfkgoyf"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2768
        • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
          C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\nupkfulscnryiyaayshznawufqqxzqkey"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:2736
        • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
          C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\pxucgm"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1108

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      318B

      MD5

      3997609b627b2c1659e4d7a3c018f60a

      SHA1

      53de2dfe29db0cfbda034ba562d14d509ac83f62

      SHA256

      ffec5bb45a882c370efa5b7e46e393dd7505dbffaaa4ab654090759a3adb53f7

      SHA512

      33ba52aa4b39c05fd39a925d2b418f6d2765a16219c727694e6a40d2d29d478db7afcb173e9154b039db7e734f0da48485b9eb03680bf398bc2296ec835f950d

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • memory/1108-47-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1108-49-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1108-48-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1108-46-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2560-14-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-7-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-19-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-21-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2560-15-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-91-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-13-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-12-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-16-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-27-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-11-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-9-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-56-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2560-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-33-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-34-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-35-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-37-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-90-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-83-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-82-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-74-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-67-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-66-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-63-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-62-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2560-59-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2560-60-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2672-28-0x0000000074480000-0x0000000074B6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2672-3-0x0000000000670000-0x0000000000688000-memory.dmp

      Filesize

      96KB

    • memory/2672-4-0x000000007448E000-0x000000007448F000-memory.dmp

      Filesize

      4KB

    • memory/2672-2-0x0000000074480000-0x0000000074B6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2672-5-0x0000000074480000-0x0000000074B6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2672-1-0x00000000008E0000-0x00000000009CA000-memory.dmp

      Filesize

      936KB

    • memory/2672-6-0x0000000004E00000-0x0000000004EC0000-memory.dmp

      Filesize

      768KB

    • memory/2672-0-0x000000007448E000-0x000000007448F000-memory.dmp

      Filesize

      4KB

    • memory/2736-41-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2736-43-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2736-45-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2768-42-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2768-39-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2768-44-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB