Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2024 07:22

General

  • Target

    Payment Transfer Request Form.bat.exe

  • Size

    1.2MB

  • MD5

    fc5a80adf45d78ffa834283d0a78f9f6

  • SHA1

    6865dec6f71546ea01420295b7175038c3a81ec4

  • SHA256

    e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c

  • SHA512

    27636cd0d31e3b1ff384869f1f2be6c23d7f02ecd70027c5d689de0893835d070218596a941472481d637cc6253ed3f2405991a6af4772596cc88f909a7dd7cb

  • SSDEEP

    24576:RYdgfvzAKzxWCC9vSA6GRdsttHVqowvVpBdlvlOUa:rzAcWFt96ydyQow5dldna

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

212.162.149.226:9285

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    AppUpdate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-VCJ8ZS

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    AppUpdate

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4336
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iKgKaogJ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1912
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA7B.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2156
    • C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3064
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4076
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\AppUpdate\remcos.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3300
          • C:\ProgramData\AppUpdate\remcos.exe
            C:\ProgramData\AppUpdate\remcos.exe
            5⤵
            • Checks computer location settings
            • 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:1548
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1056
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iKgKaogJ.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1560
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp81ED.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:4656
            • C:\ProgramData\AppUpdate\remcos.exe
              "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Executes dropped EXE
              PID:3004
            • C:\ProgramData\AppUpdate\remcos.exe
              "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:1808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\AppUpdate\remcos.exe

    Filesize

    1.2MB

    MD5

    fc5a80adf45d78ffa834283d0a78f9f6

    SHA1

    6865dec6f71546ea01420295b7175038c3a81ec4

    SHA256

    e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c

    SHA512

    27636cd0d31e3b1ff384869f1f2be6c23d7f02ecd70027c5d689de0893835d070218596a941472481d637cc6253ed3f2405991a6af4772596cc88f909a7dd7cb

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    c2ac037e78b5a4c036ab648595cbf188

    SHA1

    60d19eb063332be530d4ca4500a69d81cd40b1c3

    SHA256

    276e68ce70f8c371d1c081de6f7bc0705a4633d8e3ce011ebc70fc3643f54615

    SHA512

    7d38ea3da03798790f51c8743cdd66aab489cb7d5f919c23d16ea5ed89416b6efeebe8d41d340bd52fc5bf2fe6e91c381d82532128c51950405e6bc8cacd3ff0

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    6cb7f0dfaa53141d7c40b009b938b001

    SHA1

    d5328e45e8903295c4e930d035a776f13206b179

    SHA256

    adaa6490af6272b6cd4a9e23933fc7e84e377d9638afefeef51991fe6476c70e

    SHA512

    3d43ef4c35510c0a5450ccd3cdd08de91e0a9a1746e14e595759ff14be56e3c4644b8aadcbb761fc93bf0bc2df199042531a929ffc5504e2607aca2800b63754

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b3xmggwl.bri.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    392B

    MD5

    046708368578d720d91fb9ceecec742e

    SHA1

    1dc732f67f48a1d5694f4cf14a8d279dbd1d6ee6

    SHA256

    04f4edc28e97a16f93cf7acac864aba17cc467282550ae61baac719262be6f5e

    SHA512

    9106f645ee74c9e061fcb396a00d706512d41054a356125f26a10d42390d8f0d3ea3dd785393bf5de358b62464ec3c0f7d2e27411e87bb408581f820c427e7f0

  • C:\Users\Admin\AppData\Local\Temp\tmpA7B.tmp

    Filesize

    1KB

    MD5

    c2782d3c456780dcdcf0df733103a724

    SHA1

    c7cf6fb0ede28224be4fee958b47e2fa5ce06b47

    SHA256

    06570439bc65dd68d3b0385b73b915bc16bc75e440b2700b1fb0d4ceffcefdf0

    SHA512

    5b3f38c307f47c0c3bd72313110423bf02b13062e21e3e77ed5db4d8a6c9030012f95b3f11caac716065700a14103183dd7950db5bb66d7a7703581c447dcb1c

  • memory/548-4-0x0000000004FA0000-0x0000000004FAA000-memory.dmp

    Filesize

    40KB

  • memory/548-8-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

    Filesize

    4KB

  • memory/548-9-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/548-10-0x0000000006320000-0x00000000063E0000-memory.dmp

    Filesize

    768KB

  • memory/548-7-0x00000000050F0000-0x0000000005102000-memory.dmp

    Filesize

    72KB

  • memory/548-6-0x0000000005050000-0x00000000050EC000-memory.dmp

    Filesize

    624KB

  • memory/548-5-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/548-55-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/548-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

    Filesize

    4KB

  • memory/548-3-0x0000000004DE0000-0x0000000004E72000-memory.dmp

    Filesize

    584KB

  • memory/548-2-0x00000000052F0000-0x0000000005894000-memory.dmp

    Filesize

    5.6MB

  • memory/548-1-0x00000000002A0000-0x00000000003D2000-memory.dmp

    Filesize

    1.2MB

  • memory/1056-160-0x0000000007B60000-0x0000000007B74000-memory.dmp

    Filesize

    80KB

  • memory/1056-136-0x0000000073650000-0x000000007369C000-memory.dmp

    Filesize

    304KB

  • memory/1056-105-0x0000000005F20000-0x0000000006274000-memory.dmp

    Filesize

    3.3MB

  • memory/1056-132-0x0000000006B40000-0x0000000006B8C000-memory.dmp

    Filesize

    304KB

  • memory/1056-159-0x0000000007B10000-0x0000000007B21000-memory.dmp

    Filesize

    68KB

  • memory/1056-146-0x0000000007850000-0x00000000078F3000-memory.dmp

    Filesize

    652KB

  • memory/1548-102-0x0000000005510000-0x0000000005522000-memory.dmp

    Filesize

    72KB

  • memory/1560-147-0x0000000073650000-0x000000007369C000-memory.dmp

    Filesize

    304KB

  • memory/1808-167-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-129-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-135-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-134-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-133-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-165-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-166-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-169-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-130-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-164-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-128-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1808-168-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1912-21-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1912-19-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1912-100-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1912-33-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1912-80-0x0000000075430000-0x000000007547C000-memory.dmp

    Filesize

    304KB

  • memory/3064-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3064-34-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3064-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3064-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3064-58-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4336-90-0x00000000073E0000-0x00000000073F1000-memory.dmp

    Filesize

    68KB

  • memory/4336-79-0x0000000007460000-0x00000000074F6000-memory.dmp

    Filesize

    600KB

  • memory/4336-101-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4336-78-0x0000000007250000-0x000000000725A000-memory.dmp

    Filesize

    40KB

  • memory/4336-76-0x0000000007820000-0x0000000007E9A000-memory.dmp

    Filesize

    6.5MB

  • memory/4336-77-0x00000000071E0000-0x00000000071FA000-memory.dmp

    Filesize

    104KB

  • memory/4336-72-0x0000000006E90000-0x0000000006F33000-memory.dmp

    Filesize

    652KB

  • memory/4336-71-0x0000000006470000-0x000000000648E000-memory.dmp

    Filesize

    120KB

  • memory/4336-60-0x0000000006490000-0x00000000064C2000-memory.dmp

    Filesize

    200KB

  • memory/4336-61-0x0000000075430000-0x000000007547C000-memory.dmp

    Filesize

    304KB

  • memory/4336-94-0x0000000007500000-0x0000000007508000-memory.dmp

    Filesize

    32KB

  • memory/4336-57-0x0000000006140000-0x000000000618C000-memory.dmp

    Filesize

    304KB

  • memory/4336-56-0x0000000005EC0000-0x0000000005EDE000-memory.dmp

    Filesize

    120KB

  • memory/4336-22-0x0000000005720000-0x0000000005742000-memory.dmp

    Filesize

    136KB

  • memory/4336-23-0x00000000057C0000-0x0000000005826000-memory.dmp

    Filesize

    408KB

  • memory/4336-93-0x0000000007520000-0x000000000753A000-memory.dmp

    Filesize

    104KB

  • memory/4336-32-0x00000000058F0000-0x0000000005C44000-memory.dmp

    Filesize

    3.3MB

  • memory/4336-91-0x0000000007410000-0x000000000741E000-memory.dmp

    Filesize

    56KB

  • memory/4336-28-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4336-92-0x0000000007420000-0x0000000007434000-memory.dmp

    Filesize

    80KB

  • memory/4336-24-0x0000000005830000-0x0000000005896000-memory.dmp

    Filesize

    408KB

  • memory/4336-18-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4336-17-0x0000000004FF0000-0x0000000005618000-memory.dmp

    Filesize

    6.2MB

  • memory/4336-16-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4336-15-0x0000000004900000-0x0000000004936000-memory.dmp

    Filesize

    216KB