Overview

overview

10

Static

static

1

Guisarme1.exe

windows7-x64

10

Guisarme1.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    Guisarme1.exe
  • Size 229KB
  • Sample230403-rkjp5sfc28
  • SHA256 1a0b3222046f0838c8a536e376b898b6c97cdb821aaebae4f9ed0dc9eeb23b7c
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
guloaderremcosremotehostdownloaderrat

Malware Config

Extracted

Family

  • remcos

Botnet

  • RemoteHost

C2

  • 172.93.166.85:2404

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-XYFFIR

  • 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

Targets

    • Target
      Guisarme1.exe
    • Size 229KB
    • SHA256 1a0b3222046f0838c8a536e376b898b6c97cdb821aaebae4f9ed0dc9eeb23b7c
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    guloaderremcosremotehostdownloaderrat

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

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

      ratremcos

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Loads dropped DLL

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks