Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 01:14

General

  • Target
    a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe
  • Size 1.6MB
  • Sample240405-bl2pcafh9v
  • SHA256 a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 127.0.0.1:44999

  • 127.0.0.1:54991

  • africarem.duckdns.org:54991

  • africarem.duckdns.org:44999

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-R571U4

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • ModiLoader Second Stage 1 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 8 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe
    "C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3280
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c mkdir "\\?\C:\Windows "
      2⤵
        PID:2968
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c mkdir "\\?\C:\Windows \System32"
        2⤵
          PID:4828
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c "C:\Windows \System32\7383532.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2496
          • C:\Windows \System32\7383532.exe
            "C:\Windows \System32\7383532.exe"
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2160
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:2068
              • C:\Windows\system32\cmd.exe
                cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                5⤵
                • Suspicious use of WriteProcessMemory
                PID:3132
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                  6⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3888
        • C:\Windows\SysWOW64\extrac32.exe
          C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe C:\\Users\\Public\\Libraries\\Hmzvinyr.PIF
          2⤵
            PID:2588
          • C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe
            C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe /stext "C:\Users\Admin\AppData\Local\Temp\sspdwscxsyatkketolwsiwerbjfqlvayo"
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:2664
          • C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe
            C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe /stext "C:\Users\Admin\AppData\Local\Temp\vnvwx"
            2⤵
            • Accesses Microsoft Outlook accounts
            PID:4368
          • C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe
            C:\Users\Admin\AppData\Local\Temp\a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd.exe /stext "C:\Users\Admin\AppData\Local\Temp\fpigxdgtc"
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3288

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              __PSScriptPolicyTest_bazoky1u.aj1.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bazoky1u.aj1.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512

              sspdwscxsyatkketolwsiwerbjfqlvayo

              • Path C:\Users\Admin\AppData\Local\Temp\sspdwscxsyatkketolwsiwerbjfqlvayo
              • Size 4KB
              • SHA256 778b7d5b90428961459c82e9881fe0fece78424d6301eb0720a96f100511f599
              • MD5 SHA1 SHA512 SSDEEP

              7383532.exe

              • Path C:\Windows \System32\7383532.exe
              • Size 128KB
              • SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
              • MD5 SHA1 SHA512 SSDEEP

              netutils.dll

              • Path C:\Windows \System32\netutils.dll
              • Size 112KB
              • SHA256 50573c81e5773c13a5411e8446d7fb17956865675782239818f7affd40a2fecb
              • MD5 SHA1 SHA512 SSDEEP

              KDECO.bat

              • Path C:\windows \system32\KDECO.bat
              • Size 11KB
              • SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
              • MD5 SHA1 SHA512 SSDEEP

              memory/2160-15-0x00000000613C0000-0x00000000613E3000-memory.dmp

              memory/2664-79-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/2664-61-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/2664-67-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/2664-59-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/2664-52-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/3280-44-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-105-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-95-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-93-0x0000000033B50000-0x0000000033B69000-memory.dmp

              memory/3280-40-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-41-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-42-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-101-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-45-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-46-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-47-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-49-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-51-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-100-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-90-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-106-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-0-0x00000000007A0000-0x00000000007A1000-memory.dmp

              memory/3280-89-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-88-0x0000000015410000-0x0000000016410000-memory.dmp

              memory/3280-4-0x0000000000400000-0x00000000005AF000-memory.dmp

              memory/3280-87-0x0000000033B50000-0x0000000033B69000-memory.dmp

              memory/3280-86-0x0000000033B50000-0x0000000033B69000-memory.dmp

              memory/3280-85-0x0000000033B50000-0x0000000033B69000-memory.dmp

              memory/3280-82-0x0000000033B50000-0x0000000033B69000-memory.dmp

              memory/3280-2-0x0000000002AD0000-0x0000000003AD0000-memory.dmp

              memory/3280-1-0x0000000002AD0000-0x0000000003AD0000-memory.dmp

              memory/3288-58-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/3288-77-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/3288-66-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/3288-75-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/3288-74-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/3888-29-0x0000022B723C0000-0x0000022B723D0000-memory.dmp

              memory/3888-33-0x00007FFD00DA0000-0x00007FFD01861000-memory.dmp

              memory/3888-30-0x0000022B723C0000-0x0000022B723D0000-memory.dmp

              memory/3888-28-0x0000022B723C0000-0x0000022B723D0000-memory.dmp

              memory/3888-27-0x00007FFD00DA0000-0x00007FFD01861000-memory.dmp

              memory/3888-22-0x0000022B72600000-0x0000022B72622000-memory.dmp

              memory/4368-65-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/4368-62-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/4368-53-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/4368-68-0x0000000000400000-0x0000000000462000-memory.dmp