Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-11-2024 14:37

General

  • Target

    QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe

  • Size

    1.3MB

  • MD5

    5c44a72a49fe4fbc94f1c1aa8cbf0ab6

  • SHA1

    d0d0903f73b4aa11ee580fb6fd8d80775e6e88de

  • SHA256

    39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

  • SHA512

    d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97

  • SSDEEP

    24576:ctcKivRdWnSyEHyfE75BP/+mgWdm/bTLLK6:LKmXWSy6r2mgxv

Malware Config

Extracted

Family

remcos

Botnet

SLAVES

C2

windowslavesclient.duckdns.org:1604

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-J3MJAP

  • 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
  • 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

  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 15 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Videoss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Images.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4072
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 15
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:3240
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Videoss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Images.exe"
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:4908
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 19 > nul && copy "C:\Users\Admin\AppData\Local\Temp\QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe" "C:\Users\Admin\AppData\Roaming\Images.exe" && ping 127.0.0.1 -n 19 > nul && "C:\Users\Admin\AppData\Roaming\Images.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3936
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 19
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1364
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 19
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2556
      • C:\Users\Admin\AppData\Roaming\Images.exe
        "C:\Users\Admin\AppData\Roaming\Images.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4732
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          4⤵
            PID:2940
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
            4⤵
              PID:3844
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
              4⤵
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:4444
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\yajazdpwm"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:3380
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\ivwsavaxaelcy"
                5⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:4952
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\lpclaotromdhjqme"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1952

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        4KB

        MD5

        562a58578d6d04c7fb6bda581c57c03c

        SHA1

        12ab2b88624d01da0c5f5d1441aa21cbc276c5f5

        SHA256

        ff5c70287ba432a83f9015209d6e933462edca01d68c53c09882e1e4d22241c8

        SHA512

        3f6e19faa0196bd4c085defa587e664abdd63c25ef30df8f4323e60a5a5aca3cd2709466f772e64ab00fe331d4264841422d6057451947f3500e9252a132254e

      • C:\Users\Admin\AppData\Roaming\Images.exe

        Filesize

        1.3MB

        MD5

        5c44a72a49fe4fbc94f1c1aa8cbf0ab6

        SHA1

        d0d0903f73b4aa11ee580fb6fd8d80775e6e88de

        SHA256

        39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

        SHA512

        d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97

      • memory/316-6-0x00000000750C0000-0x0000000075870000-memory.dmp

        Filesize

        7.7MB

      • memory/316-3-0x00000000052A0000-0x0000000005844000-memory.dmp

        Filesize

        5.6MB

      • memory/316-4-0x0000000004D90000-0x0000000004E22000-memory.dmp

        Filesize

        584KB

      • memory/316-5-0x0000000004BA0000-0x0000000004BE4000-memory.dmp

        Filesize

        272KB

      • memory/316-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

        Filesize

        4KB

      • memory/316-7-0x0000000004F60000-0x0000000004F6A000-memory.dmp

        Filesize

        40KB

      • memory/316-8-0x00000000750C0000-0x0000000075870000-memory.dmp

        Filesize

        7.7MB

      • memory/316-9-0x00000000750CE000-0x00000000750CF000-memory.dmp

        Filesize

        4KB

      • memory/316-10-0x00000000750C0000-0x0000000075870000-memory.dmp

        Filesize

        7.7MB

      • memory/316-12-0x00000000750C0000-0x0000000075870000-memory.dmp

        Filesize

        7.7MB

      • memory/316-2-0x0000000004C00000-0x0000000004C9C000-memory.dmp

        Filesize

        624KB

      • memory/316-1-0x0000000000180000-0x00000000002C6000-memory.dmp

        Filesize

        1.3MB

      • memory/1952-47-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1952-46-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1952-45-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3380-40-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3380-38-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3380-36-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4444-31-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-32-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-53-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4444-29-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-30-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-26-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-33-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-27-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-35-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-54-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4444-50-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4444-24-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-55-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-56-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4444-57-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4732-28-0x0000000075090000-0x0000000075840000-memory.dmp

        Filesize

        7.7MB

      • memory/4732-19-0x0000000000100000-0x0000000000246000-memory.dmp

        Filesize

        1.3MB

      • memory/4732-18-0x0000000075090000-0x0000000075840000-memory.dmp

        Filesize

        7.7MB

      • memory/4732-20-0x0000000075090000-0x0000000075840000-memory.dmp

        Filesize

        7.7MB

      • memory/4732-23-0x0000000009FC0000-0x0000000009FC6000-memory.dmp

        Filesize

        24KB

      • memory/4732-22-0x0000000007950000-0x000000000796A000-memory.dmp

        Filesize

        104KB

      • memory/4732-21-0x0000000075090000-0x0000000075840000-memory.dmp

        Filesize

        7.7MB

      • memory/4952-39-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4952-41-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4952-37-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB