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Analysis

  • max time kernel
    147s
  • max time network
    135s
  • 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, 09:39

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 35 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:1192
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 19 > 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:2060
      • 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:5100
      • 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:2148
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 24 > 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 24 > 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:3812
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 24
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:4892
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 24
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1008
      • 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:2608
        • 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:628
          • 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\vkzdxkbxxvjpjrcqpwexvhkdpaoob"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:1912
          • 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\fmfnxdlrldbutxycygrqgmeuphgxcvsg"
            5⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:4828
          • 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\qgkgq"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4448

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    4KB

    MD5

    57509a6a6267f17bef5e5da8b1df8829

    SHA1

    0886741be12c4e6dd24688df7b9568e91b2fc2aa

    SHA256

    4d50e4b2ee7b25d6a88dea6a28503975ca95f98e6e72fcd1ee754d016df3ed3d

    SHA512

    019c20a2354ef20ff3870ea4d544ae4e7ec21729bfbeb19d2dd2f8b087fcb6b83f259ab2f35e0f3c7f044ebb7c5bbfdfc63f23b811d458a15f5ad35aa9175228

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

    Filesize

    1.3MB

    MD5

    5c44a72a49fe4fbc94f1c1aa8cbf0ab6

    SHA1

    d0d0903f73b4aa11ee580fb6fd8d80775e6e88de

    SHA256

    39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

    SHA512

    d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97

  • memory/628-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-54-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/628-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-32-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-30-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-53-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/628-50-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/628-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-24-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-57-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-56-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/628-55-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1192-10-0x0000000074A00000-0x00000000751B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1192-8-0x0000000074A00000-0x00000000751B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1192-3-0x0000000005FE0000-0x0000000006584000-memory.dmp

    Filesize

    5.6MB

  • memory/1192-2-0x0000000005990000-0x0000000005A2C000-memory.dmp

    Filesize

    624KB

  • memory/1192-12-0x0000000074A00000-0x00000000751B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1192-9-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

    Filesize

    4KB

  • memory/1192-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

    Filesize

    4KB

  • memory/1192-1-0x0000000000FD0000-0x0000000001116000-memory.dmp

    Filesize

    1.3MB

  • memory/1192-7-0x0000000005C30000-0x0000000005C3A000-memory.dmp

    Filesize

    40KB

  • memory/1192-6-0x0000000074A00000-0x00000000751B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1192-5-0x0000000005A30000-0x0000000005A74000-memory.dmp

    Filesize

    272KB

  • memory/1192-4-0x0000000005AD0000-0x0000000005B62000-memory.dmp

    Filesize

    584KB

  • memory/1912-36-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1912-40-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1912-38-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2608-28-0x00000000749D0000-0x0000000075180000-memory.dmp

    Filesize

    7.7MB

  • memory/2608-23-0x0000000009AD0000-0x0000000009AD6000-memory.dmp

    Filesize

    24KB

  • memory/2608-22-0x0000000007480000-0x000000000749A000-memory.dmp

    Filesize

    104KB

  • memory/2608-21-0x00000000749D0000-0x0000000075180000-memory.dmp

    Filesize

    7.7MB

  • memory/2608-20-0x00000000749D0000-0x0000000075180000-memory.dmp

    Filesize

    7.7MB

  • memory/2608-19-0x0000000000D70000-0x0000000000EB6000-memory.dmp

    Filesize

    1.3MB

  • memory/2608-18-0x00000000749D0000-0x0000000075180000-memory.dmp

    Filesize

    7.7MB

  • memory/4448-44-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4448-43-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4448-42-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4828-41-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4828-39-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4828-37-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB