Analysis

  • max time kernel
    149s
  • max time network
    175s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    24-08-2021 05:44

General

  • Target

    RFQ_SMC14416 Nuevo pedido,pdf.exe

  • Size

    829KB

  • MD5

    9362b9c45f484234acb2760f19666e4d

  • SHA1

    8cfb13742b157322fc4ab01b4c164a5a6eb35634

  • SHA256

    d89a39469a38c622ff6d1c36603491bedfc5d5dcc92cf629aa50057eda35f563

  • SHA512

    9e07b62a4dbf23443af9dd8c469e110fd988bc6b0677d201847a45529ad4cbceabb1f875d6f26c597ffdf63f7120fd8ab161ebd7eccf354a9eddaa2630108091

Malware Config

Extracted

Family

remcos

Botnet

E sure 4 me

C2

thankyoulord4real.ddns.net:3030

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-7DDGKV

  • 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

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

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

  • suricata: ET MALWARE Remocs 3.x Unencrypted Checkin

    suricata: ET MALWARE Remocs 3.x Unencrypted Checkin

  • suricata: ET MALWARE Remocs 3.x Unencrypted Server Response

    suricata: ET MALWARE Remocs 3.x Unencrypted Server Response

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ_SMC14416 Nuevo pedido,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ_SMC14416 Nuevo pedido,pdf.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1072
    • C:\Users\Admin\AppData\Local\Temp\RFQ_SMC14416 Nuevo pedido,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ_SMC14416 Nuevo pedido,pdf.exe"
      2⤵
      • Adds Run key to start application
      PID:1372
      • C:\Program Files (x86)\internet explorer\ieinstal.exe
        "C:\Program Files (x86)\internet explorer\ieinstal.exe"
        3⤵
          PID:2260

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1072-60-0x0000000000220000-0x0000000000221000-memory.dmp
      Filesize

      4KB

    • memory/1072-63-0x0000000010410000-0x000000001042B000-memory.dmp
      Filesize

      108KB

    • memory/1372-62-0x0000000000000000-mapping.dmp
    • memory/1372-67-0x0000000000330000-0x0000000000331000-memory.dmp
      Filesize

      4KB

    • memory/1372-66-0x00000000001B0000-0x00000000001B1000-memory.dmp
      Filesize

      4KB

    • memory/2260-68-0x0000000000000000-mapping.dmp
    • memory/2260-69-0x0000000075561000-0x0000000075563000-memory.dmp
      Filesize

      8KB

    • memory/2260-73-0x0000000010590000-0x000000001060D000-memory.dmp
      Filesize

      500KB

    • memory/2260-72-0x00000000001F0000-0x00000000001F1000-memory.dmp
      Filesize

      4KB

    • memory/2260-71-0x0000000000110000-0x0000000000111000-memory.dmp
      Filesize

      4KB

    • memory/2260-70-0x0000000000090000-0x0000000000091000-memory.dmp
      Filesize

      4KB

    • memory/2260-74-0x0000000000280000-0x00000000002FA000-memory.dmp
      Filesize

      488KB