General

  • Target

    12f5b4bda44c7e6efdaa1c0d03e9b17e2779d55ced523a2d36054b68ad4d7d88.zip

  • Size

    72KB

  • Sample

    240402-mll5fafa7x

  • MD5

    f61d66a9a89a132412767e2f7537ab07

  • SHA1

    ca6546e5c6ee397dda014c58e5c934a99223cc16

  • SHA256

    ee511bd7f93bedcef2c18179b04b312ed417c9674a19154ea6463b705706d157

  • SHA512

    faea262867410d1b0451ba41e8af96ad24d6d053f8b1e74eec7c11b71b3cb23c59a4013ddc2ef8e3b0c561be4289537e1d91e5dee852dc8a7e0e32deb41dd918

  • SSDEEP

    1536:O0doHLvR78/CjtFASW84rva09XCgW0sWA/dYOeALs4:OtJ5Qva08gW0eeOey

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

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

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-KQ00DZ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      12f5b4bda44c7e6efdaa1c0d03e9b17e2779d55ced523a2d36054b68ad4d7d88.vbs

    • Size

      178KB

    • MD5

      06d3e336e95c18b592b1a1cb0effe645

    • SHA1

      987cc6db7c8d0137c5b4170bee730639fdafe5b5

    • SHA256

      12f5b4bda44c7e6efdaa1c0d03e9b17e2779d55ced523a2d36054b68ad4d7d88

    • SHA512

      8cd8dd907cee5e9ed928f38599659ec21c1b6c3797ac31f0140f788f0cb7a03dbd625fa6842f6ab200e6cf37d5db670c00fef57acf1b402b0cc117c82b60169b

    • SSDEEP

      3072:XPvtrVR7t/zhP5AbvMZoxnRcRKKh14t8EIuvQcVi1l8ok/1fyLbvj/3s0oV++hyx:/vdVR7tLhxAbvMZoxnRcsK3M8EIOQcVg

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Remcos

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks