Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    06-12-2024 20:19

General

  • Target

    DAÑOS Y PERJUICIO/DEMANDA JUDICIAL.exe

  • Size

    300.0MB

  • MD5

    af43d6ddda738aa40b80b613f8d35921

  • SHA1

    3eb0dac10c5432c5170086428ae2d698b2c16f6e

  • SHA256

    4a47d92d581b4b746b48bb92057354415fea9343f744938e0d7454e9610b9222

  • SHA512

    d10c04027e02766aa2c10f397f67eea33f28253b3a708e16d965ea3cc01f718ded33bfeeb00abdbeca22fac3b59efa5bc423d687e26520f5fab6c095d46b0a63

  • SSDEEP

    12288:W8ryNswRXbW3UOk6r57kaclgzw7XXs8s3ssOdytTFbjLTxV:Z2NpXqDk6lg7aqX8v8Wbv

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

baloto1.duckdns.org:2019

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-NRZVSH

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Executes dropped EXE 3 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 21 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DAÑOS Y PERJUICIO\DEMANDA JUDICIAL.exe
    "C:\Users\Admin\AppData\Local\Temp\DAÑOS Y PERJUICIO\DEMANDA JUDICIAL.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:2188
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2780
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2908
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\DAÑOS Y PERJUICIO\DEMANDA JUDICIAL.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2496
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {C9393144-D7DE-438D-8157-FBA44D493EA0} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2624
    • C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
      C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
        3⤵
          PID:1876
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:1284
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1028
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2620
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c copy "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2816
      • C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
        C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        PID:2408
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
          3⤵
            PID:1812
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
            3⤵
            • System Location Discovery: System Language Discovery
            PID:1984
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
            3⤵
            • System Location Discovery: System Language Discovery
            PID:2080
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
              4⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1592
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c copy "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
            3⤵
            • System Location Discovery: System Language Discovery
            PID:2344
        • C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
          C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          PID:3000
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
            3⤵
              PID:316
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
              3⤵
              • System Location Discovery: System Language Discovery
              PID:1488
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
              3⤵
              • System Location Discovery: System Language Discovery
              PID:2040
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\nostos\nostos.exe'" /f
                4⤵
                • System Location Discovery: System Language Discovery
                • Scheduled Task/Job: Scheduled Task
                PID:320
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c copy "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
              3⤵
              • System Location Discovery: System Language Discovery
              PID:600

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          230B

          MD5

          fa31ff675ca2c05f8b13b5a922222c4c

          SHA1

          314c69a70b119d2e3b48676ca955c6cd737fa3ed

          SHA256

          fc2761e60736bdfae36b05ed1a802f49f20c86dd3e74b268efb5ebf03cf10393

          SHA512

          3d562a29644843232d0b645c7569a2377639a18facaf1b5094db99ae5b5933f79b8413acf620d42ca9940974d0f97ed30768b5b4750a4c6d6ef3ecb9fb7ff7c7

        • memory/2188-48-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-9-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-12-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-10-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-74-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-73-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2188-6-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-8-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-7-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-5-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-2-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-27-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-24-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-4-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-29-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-32-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-33-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-34-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-35-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-36-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-38-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-39-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-40-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-41-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-49-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-47-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-44-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-43-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-18-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-42-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-50-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-51-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-52-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-53-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-55-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-56-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-57-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-58-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-59-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-60-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-62-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-63-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-64-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-65-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-66-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-67-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-68-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-23-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-70-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-71-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2188-72-0x0000000000080000-0x0000000000100000-memory.dmp

          Filesize

          512KB

        • memory/2312-1-0x0000000000800000-0x00000000008C2000-memory.dmp

          Filesize

          776KB

        • memory/2312-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

          Filesize

          4KB

        • memory/2312-28-0x0000000074C50000-0x000000007533E000-memory.dmp

          Filesize

          6.9MB

        • memory/2312-16-0x0000000074C50000-0x000000007533E000-memory.dmp

          Filesize

          6.9MB

        • memory/2408-179-0x0000000000C70000-0x0000000000D32000-memory.dmp

          Filesize

          776KB

        • memory/2964-77-0x0000000000C70000-0x0000000000D32000-memory.dmp

          Filesize

          776KB

        • memory/3000-286-0x0000000000140000-0x0000000000202000-memory.dmp

          Filesize

          776KB