Analysis

  • max time kernel
    151s
  • max time network
    182s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    23-08-2021 16:48

General

  • Target

    PO Order No 338390208B,pdf.exe

  • Size

    689KB

  • MD5

    59b6819fd6875b148f559193228aeacf

  • SHA1

    9ae463940601c9adbcee46a275a57308cf77612c

  • SHA256

    86da76aaa93035696752329676cc619cb00d99fbf38857a56b087fa27f80c028

  • SHA512

    c6540b18b5569354458eb74b43c59a4f12fc2209e58fac24cd477943871be0733685d127d61716e2e48478af8e729ecd98e133b2709e414a3c70dc8acdd1ebaa

Malware Config

Extracted

Family

remcos

Botnet

Jboy

C2

newlogs.ddns.net:6565

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-I84YGE

  • 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

    wikipedia;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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO Order No 338390208B,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\PO Order No 338390208B,pdf.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:748
    • C:\Program Files (x86)\internet explorer\ieinstal.exe
      "C:\Program Files (x86)\internet explorer\ieinstal.exe"
      2⤵
        PID:1876

    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/748-60-0x0000000000220000-0x0000000000221000-memory.dmp
      Filesize

      4KB

    • memory/748-61-0x0000000075451000-0x0000000075453000-memory.dmp
      Filesize

      8KB

    • memory/1876-62-0x0000000000000000-mapping.dmp
    • memory/1876-65-0x00000000000D0000-0x00000000000D1000-memory.dmp
      Filesize

      4KB

    • memory/1876-64-0x0000000000090000-0x0000000000091000-memory.dmp
      Filesize

      4KB

    • memory/1876-66-0x00000000001F0000-0x00000000001F1000-memory.dmp
      Filesize

      4KB

    • memory/1876-67-0x0000000010590000-0x000000001060C000-memory.dmp
      Filesize

      496KB

    • memory/1876-68-0x0000000000330000-0x00000000003A9000-memory.dmp
      Filesize

      484KB