Analysis

  • max time kernel
    153s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-09-2024 20:58

General

  • Target

    ADJUNTO ARCHIVO CON CUENTA DE COBRO POR $2.000.000, FAVOR DESCARGAR PARA SU PAGO OPORTUNO.exe

  • Size

    1023.0MB

  • MD5

    91e9ce49b650ce147c174a6e17001c70

  • SHA1

    bc427a785e32378edffcd314179fc08510d8237a

  • SHA256

    4704066f7fdf1f819c4d8a25a07dbf021a5a3e47949edfdacc10fa6d98f23225

  • SHA512

    cfdd721244deba2c449a2af27072e43dd8475c61b1ce2fad02abb83e86c7d9c8a5d1678f2f2ece01a8f7d3d4a84b50e9a89c69417b925f7f4af9d998f7c9e178

  • SSDEEP

    12288:75RVeIv1Jyhik2XF62YPtnsMg9t4q78cjNgT8Yz48h7UJ:9RVeIv1JygrV6XtsRVUS81UJ

Malware Config

Extracted

Family

remcos

Botnet

PLATA

C2

comercio43.con-ip.com:1835

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

    registros.dat

  • keylog_flag

    false

  • keylog_folder

    data34

  • mouse_option

    false

  • mutex

    kiustong-7N6PEP

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Capturas de pantalla

  • 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
  • Suspicious use of SetThreadContext 3 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 18 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 3 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\ADJUNTO ARCHIVO CON CUENTA DE COBRO POR $2.000.000, FAVOR DESCARGAR PARA SU PAGO OPORTUNO.exe
    "C:\Users\Admin\AppData\Local\Temp\ADJUNTO ARCHIVO CON CUENTA DE COBRO POR $2.000.000, FAVOR DESCARGAR PARA SU PAGO OPORTUNO.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1132
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:3316
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\AppData"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2756
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\AppData\AppData.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:212
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\AppData\AppData.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2184
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\ADJUNTO ARCHIVO CON CUENTA DE COBRO POR $2.000.000, FAVOR DESCARGAR PARA SU PAGO OPORTUNO.exe" "C:\Users\Admin\AppData\Roaming\AppData\AppData.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4636
  • C:\Users\Admin\AppData\Roaming\AppData\AppData.exe
    C:\Users\Admin\AppData\Roaming\AppData\AppData.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4580
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\AppData"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4484
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\AppData\AppData.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5036
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\AppData\AppData.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3352
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\AppData\AppData.exe" "C:\Users\Admin\AppData\Roaming\AppData\AppData.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:208
  • C:\Users\Admin\AppData\Roaming\AppData\AppData.exe
    C:\Users\Admin\AppData\Roaming\AppData\AppData.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:800
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2032
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 648
        3⤵
        • Program crash
        PID:4264
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\AppData"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:404
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\AppData\AppData.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2496
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\AppData\AppData.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2588
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\AppData\AppData.exe" "C:\Users\Admin\AppData\Roaming\AppData\AppData.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2756
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2032 -ip 2032
    1⤵
      PID:1980

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\data34\registros.dat

      Filesize

      144B

      MD5

      13b738c423c24b9e4505aeb88bfa775d

      SHA1

      0818d78486e753fcdf99611697749e22d0e59bc4

      SHA256

      03307a5dee8f824576d44cd51e312d049f368bf33b30275e3e1ecf799fdc4521

      SHA512

      c9a1f68fce0ecb07d66f44d89bcf9469afd2925ebca878d6b45357a67c34a2bb9139a1a91094f3252f948d74b0c9e08d795918a4680a09d77f1818c7de346ea5

    • C:\ProgramData\data34\registros.dat

      Filesize

      230B

      MD5

      46416d2b17332c6c16dc8d32a69535fa

      SHA1

      acce15268089823fc1e9b4dff5eb6313d6d88b6a

      SHA256

      47668c67b070ab0c16c174c75c12fcbe70376837d4e1207e1604b5c0acb25ef1

      SHA512

      a688dc61b74eb39d72eafa7d83442332557d4a00139d08dc6d5ce60c16bf893cd2b48c316a5f44a6bd37530449641c701860eb650894430cef63270dc403314e

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

      Filesize

      425B

      MD5

      4eaca4566b22b01cd3bc115b9b0b2196

      SHA1

      e743e0792c19f71740416e7b3c061d9f1336bf94

      SHA256

      34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

      SHA512

      bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

    • memory/1132-1-0x00000000008F0000-0x00000000009D6000-memory.dmp

      Filesize

      920KB

    • memory/1132-2-0x00007FF962B70000-0x00007FF962D65000-memory.dmp

      Filesize

      2.0MB

    • memory/1132-0-0x00007FF962B70000-0x00007FF962D65000-memory.dmp

      Filesize

      2.0MB

    • memory/2032-70-0x0000000000370000-0x00000000003F2000-memory.dmp

      Filesize

      520KB

    • memory/2032-69-0x0000000000370000-0x00000000003F2000-memory.dmp

      Filesize

      520KB

    • memory/2032-64-0x0000000000370000-0x00000000003F2000-memory.dmp

      Filesize

      520KB

    • memory/3316-5-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-56-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-14-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-15-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-17-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-4-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-74-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-73-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-8-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-48-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-55-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-13-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-12-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-11-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-7-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3316-3-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4580-44-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4580-42-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB