Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    21-09-2023 10:31

General

  • Target

    20230921-8569342.exe

  • Size

    1.0MB

  • MD5

    b4a65efc3640455ae3b284515d884ef7

  • SHA1

    36bc08893282e08210bafd666d09c5f7f2a81e68

  • SHA256

    75e017e742b2506cdda2a132759075c7b187ca941df606b34116d0452ef04fd0

  • SHA512

    0bb2831a3f27ecdb8f8cc33379bba5017ed462bcbd66b5d204c6837daa73cd19c7d8bc4737ba00ba488d327ebc7b0c87213e5f70e87a1fc69b55f6c98239c7d0

  • SSDEEP

    24576:6RWQYAE36CIx5yD7cyR5JMwUlkR9tWYk4Sr8sBWRvooPRle:cWQ3nxkDZ52pl3Yk4SAiqvjPC

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

888888

C2

moremoney.myftp.org:6609

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-EUI58J

  • 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.

  • Executes dropped EXE 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20230921-8569342.exe
    "C:\Users\Admin\AppData\Local\Temp\20230921-8569342.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:2600
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c mkdir "C:\Users\Admin\AppData\Local\Temp\Phtos"
        2⤵
          PID:2808
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\20230921-8569342.exe" "C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe"
          2⤵
            PID:1724
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2732
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
              3⤵
              • Creates scheduled task(s)
              PID:2608
        • C:\Windows\system32\taskeng.exe
          taskeng.exe {0D9ABEB5-EC14-47B6-B9D0-597F51AB0AF1} S-1-5-21-3849525425-30183055-657688904-1000:KGPMNUDG\Admin:Interactive:[1]
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:2036
          • C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe
            C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2456
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
              3⤵
                PID:2424
              • C:\Windows\SysWOW64\cmd.exe
                "cmd" /c mkdir "C:\Users\Admin\AppData\Local\Temp\Phtos"
                3⤵
                  PID:1992
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe" "C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe"
                  3⤵
                    PID:1376
                  • C:\Windows\SysWOW64\cmd.exe
                    "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1980
                    • C:\Windows\SysWOW64\schtasks.exe
                      schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
                      4⤵
                      • Creates scheduled task(s)
                      PID:1700
                • C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe
                  C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe
                  2⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  PID:2436
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
                    3⤵
                      PID:1504
                    • C:\Windows\SysWOW64\cmd.exe
                      "cmd" /c mkdir "C:\Users\Admin\AppData\Local\Temp\Phtos"
                      3⤵
                        PID:2072
                      • C:\Windows\SysWOW64\cmd.exe
                        "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
                        3⤵
                          PID:2404
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
                            4⤵
                            • Creates scheduled task(s)
                            PID:2088
                        • C:\Windows\SysWOW64\cmd.exe
                          "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe" "C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe"
                          3⤵
                            PID:2896

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe

                        Filesize

                        1.0MB

                        MD5

                        b4a65efc3640455ae3b284515d884ef7

                        SHA1

                        36bc08893282e08210bafd666d09c5f7f2a81e68

                        SHA256

                        75e017e742b2506cdda2a132759075c7b187ca941df606b34116d0452ef04fd0

                        SHA512

                        0bb2831a3f27ecdb8f8cc33379bba5017ed462bcbd66b5d204c6837daa73cd19c7d8bc4737ba00ba488d327ebc7b0c87213e5f70e87a1fc69b55f6c98239c7d0

                      • C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe

                        Filesize

                        1.0MB

                        MD5

                        b4a65efc3640455ae3b284515d884ef7

                        SHA1

                        36bc08893282e08210bafd666d09c5f7f2a81e68

                        SHA256

                        75e017e742b2506cdda2a132759075c7b187ca941df606b34116d0452ef04fd0

                        SHA512

                        0bb2831a3f27ecdb8f8cc33379bba5017ed462bcbd66b5d204c6837daa73cd19c7d8bc4737ba00ba488d327ebc7b0c87213e5f70e87a1fc69b55f6c98239c7d0

                      • C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe

                        Filesize

                        1.0MB

                        MD5

                        b4a65efc3640455ae3b284515d884ef7

                        SHA1

                        36bc08893282e08210bafd666d09c5f7f2a81e68

                        SHA256

                        75e017e742b2506cdda2a132759075c7b187ca941df606b34116d0452ef04fd0

                        SHA512

                        0bb2831a3f27ecdb8f8cc33379bba5017ed462bcbd66b5d204c6837daa73cd19c7d8bc4737ba00ba488d327ebc7b0c87213e5f70e87a1fc69b55f6c98239c7d0

                      • memory/1504-80-0x0000000000401000-0x0000000000459000-memory.dmp

                        Filesize

                        352KB

                      • memory/2228-0-0x0000000000F70000-0x0000000001078000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/2228-1-0x0000000074AF0000-0x00000000751DE000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2228-2-0x0000000000B60000-0x0000000000BA0000-memory.dmp

                        Filesize

                        256KB

                      • memory/2228-3-0x0000000004B30000-0x0000000004C26000-memory.dmp

                        Filesize

                        984KB

                      • memory/2228-21-0x0000000074AF0000-0x00000000751DE000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2424-47-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/2436-81-0x00000000730E0000-0x00000000737CE000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2436-56-0x00000000730E0000-0x00000000737CE000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2436-57-0x0000000000B80000-0x0000000000C88000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/2436-58-0x0000000004370000-0x00000000043B0000-memory.dmp

                        Filesize

                        256KB

                      • memory/2456-50-0x00000000737D0000-0x0000000073EBE000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2456-37-0x0000000002110000-0x0000000002150000-memory.dmp

                        Filesize

                        256KB

                      • memory/2456-36-0x00000000737D0000-0x0000000073EBE000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2456-35-0x0000000000B80000-0x0000000000C88000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/2600-13-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-15-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/2600-26-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-27-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-29-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-30-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-31-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-32-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-24-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-20-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-19-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-18-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-16-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-25-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-14-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-51-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-53-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-54-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-12-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-11-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-10-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-8-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-6-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-4-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2600-82-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB