Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
  • Program crash 1 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:2364
    • 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:4512
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4620
    • 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:1872
      • 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:1796
    • 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:1700
  • C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
    C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
      2⤵
        PID:1776
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:4920
      • 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:4504
        • 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:2144
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c copy "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:1120
    • C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
      C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1056
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
        2⤵
          PID:4796
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
          2⤵
          • System Location Discovery: System Language Discovery
          PID:2932
        • 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
          PID:1116
          • 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:1596
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c copy "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          PID:2364
      • C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
        C:\Users\Admin\AppData\Roaming\nostos\nostos.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        PID:4308
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
          2⤵
            PID:2936
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2936 -s 520
              3⤵
              • Program crash
              PID:4824
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\nostos"
            2⤵
            • System Location Discovery: System Language Discovery
            PID:4896
          • 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
            PID:336
            • 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:1204
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c copy "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe" "C:\Users\Admin\AppData\Roaming\nostos\nostos.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            PID:3924
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 2936 -ip 2936
          1⤵
            PID:4568

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            230B

            MD5

            f53099b1fad1d7f9c4e0afe997746b8b

            SHA1

            505246a503ce23866d1ebb4928d7324337693777

            SHA256

            2711c57d39d9f5385935cddb3975c15ccb89eaaf2aafe5016b242914c0b72266

            SHA512

            fc7828d6e429bf17a962ede81fbd07c5094ddb35337b1bd175ab53acc3a4509eb87ce1fe9423d7f64bca0072bb9c0a01160fdb78a379c3fac149ac94970b88bb

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\nostos.exe.log

            Filesize

            517B

            MD5

            13f84b613e6a4dd2d82f7c44b2295a04

            SHA1

            f9e07213c2825ecb28e732f3e66e07625747c4b3

            SHA256

            d9c52c1eb0b6a04d3495ab971da2c6d01b0964a8b04fd173bfb351820b255c33

            SHA512

            3a2aca3d21bff43e36de5d9c97b0d1a9c972ee5ab0d9322a3615c0820042a7c9c4c0f2d41522fb4f2347b9a1679b63c91dcf5dc75444ba64c736e2cdcf10ee7d

          • memory/1776-63-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/2364-11-0x00000000749B0000-0x0000000075160000-memory.dmp

            Filesize

            7.7MB

          • memory/2364-1-0x0000000000E00000-0x0000000000EC2000-memory.dmp

            Filesize

            776KB

          • memory/2364-2-0x00000000057E0000-0x0000000005846000-memory.dmp

            Filesize

            408KB

          • memory/2364-0-0x00000000749BE000-0x00000000749BF000-memory.dmp

            Filesize

            4KB

          • memory/2364-13-0x00000000749B0000-0x0000000075160000-memory.dmp

            Filesize

            7.7MB

          • memory/4512-43-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-49-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-7-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-14-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-15-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-18-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-19-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-20-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-21-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-22-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-24-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-25-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-26-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-27-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-28-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-29-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-30-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-33-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-34-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-35-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-36-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-37-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-38-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-40-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-41-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-42-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-10-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-44-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-45-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-46-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-48-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-12-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-50-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-51-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-52-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-53-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-54-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-56-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-57-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-58-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-59-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-5-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-65-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-67-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-4-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-68-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-69-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-70-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-71-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-72-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-73-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-75-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-76-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-77-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-78-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-79-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-80-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-82-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-83-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-84-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB

          • memory/4512-3-0x0000000000400000-0x0000000000480000-memory.dmp

            Filesize

            512KB