Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    27-08-2024 16:25

General

  • Target

    SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.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 5 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 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2688
    • 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\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2200
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.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:2460
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe /stext "C:\Users\Admin\AppData\Local\Temp\ayrxfhskpflxwcldzmixitdovmrewifq"
        3⤵
          PID:1404
        • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
          C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe /stext "C:\Users\Admin\AppData\Local\Temp\ayrxfhskpflxwcldzmixitdovmrewifq"
          3⤵
            PID:2592
          • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
            C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe /stext "C:\Users\Admin\AppData\Local\Temp\ayrxfhskpflxwcldzmixitdovmrewifq"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2912
          • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
            C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe /stext "C:\Users\Admin\AppData\Local\Temp\lsxq"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:1860
          • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe
            C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.37.11054.31488.exe /stext "C:\Users\Admin\AppData\Local\Temp\vukjgsn"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2256

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        298B

        MD5

        47ae2a6f222c55df6e9cf990f5f16886

        SHA1

        1e2f0a461f0470e946799202379b26c6a7872ade

        SHA256

        ee8f5803d4d73d9c6f8f893aed05527b993d99dce8b1292f127be2f690d14d5a

        SHA512

        3a8fc30e379cc646fd055973767fe49bc1e7963e2c4504aeea96bfbe68c37aff2a94fcace6a5ea4bbd2fee37bea459404cead11045030c4492a6507313f8b695

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

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • memory/1860-47-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1860-55-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1860-54-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2256-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2256-52-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2256-53-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2256-51-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2460-40-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-28-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-21-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-19-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-17-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-15-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-11-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-9-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-7-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-35-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-34-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-31-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-30-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-104-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-39-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-38-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-103-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-41-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-43-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-96-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-27-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2460-95-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-88-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-87-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-79-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-72-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-71-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-69-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-62-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2460-64-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2460-68-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2460-67-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2688-2-0x0000000074E50000-0x000000007553E000-memory.dmp

        Filesize

        6.9MB

      • memory/2688-3-0x0000000000700000-0x0000000000718000-memory.dmp

        Filesize

        96KB

      • memory/2688-1-0x0000000000160000-0x000000000024A000-memory.dmp

        Filesize

        936KB

      • memory/2688-4-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

        Filesize

        4KB

      • memory/2688-5-0x0000000074E50000-0x000000007553E000-memory.dmp

        Filesize

        6.9MB

      • memory/2688-6-0x00000000050A0000-0x0000000005160000-memory.dmp

        Filesize

        768KB

      • memory/2688-0-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

        Filesize

        4KB

      • memory/2688-29-0x0000000074E50000-0x000000007553E000-memory.dmp

        Filesize

        6.9MB

      • memory/2912-45-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2912-49-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2912-48-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB