Analysis

  • max time kernel
    148s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
  • Loads dropped DLL 2 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 13 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 64 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:780
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 18 > 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:2600
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 18
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2800
      • 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:2756
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 18 > 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 18 > nul && "C:\Users\Admin\AppData\Roaming\Images.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 18
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2208
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 18
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2572
      • 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:2568
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          4⤵
            PID:532
          • 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:2832
            • 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\ifeifplxjkpmgmftaezlvax"
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:1056
            • 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\shraghwzxshzrbtxspmfgfkvcko"
              5⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:748
            • 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\vbxlhahslaadthpbbaygjremlrfovw"
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:1736

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      Filesize

      1.3MB

      MD5

      5c44a72a49fe4fbc94f1c1aa8cbf0ab6

      SHA1

      d0d0903f73b4aa11ee580fb6fd8d80775e6e88de

      SHA256

      39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

      SHA512

      d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97

    • memory/532-20-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/532-22-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/532-28-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/532-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/532-30-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/532-24-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/532-26-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/748-63-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/748-68-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/748-62-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/780-5-0x0000000074BC0000-0x00000000752AE000-memory.dmp

      Filesize

      6.9MB

    • memory/780-4-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

      Filesize

      4KB

    • memory/780-3-0x0000000074BC0000-0x00000000752AE000-memory.dmp

      Filesize

      6.9MB

    • memory/780-2-0x00000000004D0000-0x0000000000514000-memory.dmp

      Filesize

      272KB

    • memory/780-1-0x0000000000800000-0x0000000000946000-memory.dmp

      Filesize

      1.3MB

    • memory/780-6-0x0000000074BC0000-0x00000000752AE000-memory.dmp

      Filesize

      6.9MB

    • memory/780-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

      Filesize

      4KB

    • memory/1056-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1056-64-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1056-60-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1056-59-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1736-69-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1736-67-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1736-66-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2568-17-0x0000000000E70000-0x0000000000FB6000-memory.dmp

      Filesize

      1.3MB

    • memory/2568-18-0x0000000000520000-0x000000000053A000-memory.dmp

      Filesize

      104KB

    • memory/2568-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2832-57-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-55-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-49-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-48-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-47-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-46-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-51-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-56-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2832-50-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-52-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-53-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-75-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2832-79-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2832-78-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2832-80-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-81-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2832-82-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB