General

  • Target

    547ffc87de4f0a1aa0c3031152ba6297e1b0aa81e41fa1d5f97a63318137206d.exe

  • Size

    658KB

  • Sample

    240926-l74qya1fqq

  • MD5

    c5aceb5a91bf991604daec67bde90bc7

  • SHA1

    66f965774fbee77e43d089281366d1256b312386

  • SHA256

    547ffc87de4f0a1aa0c3031152ba6297e1b0aa81e41fa1d5f97a63318137206d

  • SHA512

    a774095ba9c245ecb217fabbcc3f5a37d9678ef1e304543834a54eb554fb0735b761957cd254c30b5ee0e73638c2992580fffe68b1aadb824e76a8b10c375a6e

  • SSDEEP

    12288:8vPoJfNUnZjJd4Yuz366rLjW4aFdIge89hbL7TWxv69jIQS6lpOYCUjJ+C:8PQfNUnN4dKBdtZN7avBQTlpvCUz

Malware Config

Extracted

Family

remcos

Botnet

Rem_doc2

C2

107.173.4.16:2404

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

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-DSGECX

  • 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

      547ffc87de4f0a1aa0c3031152ba6297e1b0aa81e41fa1d5f97a63318137206d.exe

    • Size

      658KB

    • MD5

      c5aceb5a91bf991604daec67bde90bc7

    • SHA1

      66f965774fbee77e43d089281366d1256b312386

    • SHA256

      547ffc87de4f0a1aa0c3031152ba6297e1b0aa81e41fa1d5f97a63318137206d

    • SHA512

      a774095ba9c245ecb217fabbcc3f5a37d9678ef1e304543834a54eb554fb0735b761957cd254c30b5ee0e73638c2992580fffe68b1aadb824e76a8b10c375a6e

    • SSDEEP

      12288:8vPoJfNUnZjJd4Yuz366rLjW4aFdIge89hbL7TWxv69jIQS6lpOYCUjJ+C:8PQfNUnN4dKBdtZN7avBQTlpvCUz

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Remcos

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks