Analysis

  • max time kernel
    597s
  • max time network
    586s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    13-11-2024 14:02

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 29 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 43 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:2908
    • 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:5320
      • 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:5948
      • 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:1232
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 29 > 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 29 > 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:5764
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 29
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2700
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 29
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:3080
      • 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:3564
        • 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:416
          • 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\dyxjjkanmasq"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:5432
          • 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\nactjclhaikvsmi"
            5⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:3136
          • 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\yuimcueiwqdicawylsv"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

    Filesize

    1.3MB

    MD5

    5c44a72a49fe4fbc94f1c1aa8cbf0ab6

    SHA1

    d0d0903f73b4aa11ee580fb6fd8d80775e6e88de

    SHA256

    39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

    SHA512

    d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97

  • memory/416-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-59-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-68-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-67-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-66-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-65-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-72-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-63-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-62-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-61-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-84-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-85-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-76-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-60-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-75-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-74-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-24-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-73-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-30-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-32-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-33-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-58-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-64-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-57-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-71-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-56-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-70-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-54-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/416-55-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/416-53-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/416-50-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2796-40-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2796-39-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2796-41-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2908-5-0x00000000055A0000-0x00000000055E4000-memory.dmp

    Filesize

    272KB

  • memory/2908-9-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

    Filesize

    4KB

  • memory/2908-4-0x0000000005740000-0x00000000057D2000-memory.dmp

    Filesize

    584KB

  • memory/2908-3-0x0000000005CF0000-0x0000000006296000-memory.dmp

    Filesize

    5.6MB

  • memory/2908-6-0x0000000074E10000-0x00000000755C1000-memory.dmp

    Filesize

    7.7MB

  • memory/2908-1-0x00000000003F0000-0x0000000000536000-memory.dmp

    Filesize

    1.3MB

  • memory/2908-2-0x0000000005630000-0x00000000056CC000-memory.dmp

    Filesize

    624KB

  • memory/2908-0-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

    Filesize

    4KB

  • memory/2908-12-0x0000000074E10000-0x00000000755C1000-memory.dmp

    Filesize

    7.7MB

  • memory/2908-10-0x0000000074E10000-0x00000000755C1000-memory.dmp

    Filesize

    7.7MB

  • memory/2908-7-0x0000000005C70000-0x0000000005C7A000-memory.dmp

    Filesize

    40KB

  • memory/2908-8-0x0000000074E10000-0x00000000755C1000-memory.dmp

    Filesize

    7.7MB

  • memory/3136-42-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3136-37-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3136-44-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3564-21-0x0000000074DE0000-0x0000000075591000-memory.dmp

    Filesize

    7.7MB

  • memory/3564-28-0x0000000074DE0000-0x0000000075591000-memory.dmp

    Filesize

    7.7MB

  • memory/3564-23-0x000000000A2F0000-0x000000000A2F6000-memory.dmp

    Filesize

    24KB

  • memory/3564-22-0x0000000007CA0000-0x0000000007CBA000-memory.dmp

    Filesize

    104KB

  • memory/3564-20-0x0000000074DE0000-0x0000000075591000-memory.dmp

    Filesize

    7.7MB

  • memory/3564-19-0x0000000000370000-0x00000000004B6000-memory.dmp

    Filesize

    1.3MB

  • memory/3564-18-0x0000000074DE0000-0x0000000075591000-memory.dmp

    Filesize

    7.7MB

  • memory/5432-43-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/5432-38-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/5432-36-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB