General

  • Target

    DHL document LHER00.xls

  • Size

    317KB

  • Sample

    240321-vrge5sch38

  • MD5

    e72b21b59a48b79ab517924026a54c43

  • SHA1

    14808fa1b142d51b7627074ea41f0c85f63c701e

  • SHA256

    c613e4d92cdca1b82fd44e2415053a45fb3ea2cfc3ab9b0cdbf7cf616727ba0a

  • SHA512

    40fc44d12e4ed697fb0698ccafc6341271d2c01aeea8d7fffe95159692c8e3fabba0db667e061c1e9826ceec66ee0e13e6f90e236f2cff16228df2d7f402fa88

  • SSDEEP

    6144:PVunhXAtY35qAOJl/YrLYz+WrNhZF+E+fgL+0dD8ivSbVB1MIvOJ1J8VtA5DXdir:P4hXAU3bVB1MIWJ1StWYPtHz

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

sembe.duckdns.org:14645

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

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    notess

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-P0AEMX

  • 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

      DHL document LHER00.xls

    • Size

      317KB

    • MD5

      e72b21b59a48b79ab517924026a54c43

    • SHA1

      14808fa1b142d51b7627074ea41f0c85f63c701e

    • SHA256

      c613e4d92cdca1b82fd44e2415053a45fb3ea2cfc3ab9b0cdbf7cf616727ba0a

    • SHA512

      40fc44d12e4ed697fb0698ccafc6341271d2c01aeea8d7fffe95159692c8e3fabba0db667e061c1e9826ceec66ee0e13e6f90e236f2cff16228df2d7f402fa88

    • SSDEEP

      6144:PVunhXAtY35qAOJl/YrLYz+WrNhZF+E+fgL+0dD8ivSbVB1MIvOJ1J8VtA5DXdir:P4hXAU3bVB1MIWJ1StWYPtHz

    • Remcos

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

    • Blocklisted process makes network request

    • Abuses OpenXML format to download file from external location

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks