Analysis

  • max time kernel
    150s
  • max time network
    170s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    31-10-2022 15:40

General

  • Target

    New Purchase Order–P2D026434-590000206/New Purchase Order–P2D026434-59000034675.exe

  • Size

    902KB

  • MD5

    9532ec4054bbcd5e7c57d56b84a79c05

  • SHA1

    f14ec826b3b8d885f06279fdf10279b291e9b424

  • SHA256

    66036dbdefe6e7a12bd3d05d98be19e5ea65f339866b3765c0bbe057615e4e86

  • SHA512

    d981b28e6da4e1070db7509837b0f6ac3f77765deac60a1a86171041a0484e8ad975a00f21d489105925a29e306bcc55f1b7424595480b0da45f69829066098a

  • SSDEEP

    12288:i9DB0XN+2zVPNZHHuixe/5Zh0SYWf1bjUGKgEbORhFBN8De3JFjcTWZmhj+wzhd:uDmwoHHuSe/5j0ifVU5u8DAo3YYh

Malware Config

Extracted

Family

remcos

Botnet

DUCKDOMAIN-FILE

C2

dapsan.duckdns.org:2404

www.dapsan.biz:2404

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

    true

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-BERTBE

  • 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

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.

  • ModiLoader Second Stage 29 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New Purchase Order–P2D026434-590000206\New Purchase Order–P2D026434-59000034675.exe
    "C:\Users\Admin\AppData\Local\Temp\New Purchase Order–P2D026434-590000206\New Purchase Order–P2D026434-59000034675.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Windows\SysWOW64\colorcpl.exe
      C:\Windows\System32\colorcpl.exe
      2⤵
        PID:1148

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Install Root Certificate

    1
    T1130

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1148-62-0x0000000000000000-mapping.dmp
    • memory/1148-93-0x00000000005B0000-0x000000000062F000-memory.dmp
      Filesize

      508KB

    • memory/1148-92-0x00000000005B0000-0x000000000062F000-memory.dmp
      Filesize

      508KB

    • memory/1148-91-0x0000000010590000-0x0000000010612000-memory.dmp
      Filesize

      520KB

    • memory/1148-66-0x0000000010590000-0x0000000010612000-memory.dmp
      Filesize

      520KB

    • memory/1808-75-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-77-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-59-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-64-0x0000000010590000-0x0000000010612000-memory.dmp
      Filesize

      520KB

    • memory/1808-65-0x0000000010590000-0x0000000010612000-memory.dmp
      Filesize

      520KB

    • memory/1808-60-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-68-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-69-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-70-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-71-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-72-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-73-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-74-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-54-0x00000000751A1000-0x00000000751A3000-memory.dmp
      Filesize

      8KB

    • memory/1808-76-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-61-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-80-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-79-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-78-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-81-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-82-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-83-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-84-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-85-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-86-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-87-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-88-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-89-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-90-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-58-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-57-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB

    • memory/1808-55-0x00000000002B0000-0x00000000002DB000-memory.dmp
      Filesize

      172KB