Overview

overview

10

Static

static

SIGNED CON...I.xlsx

windows7-x64

10

SIGNED CON...I.xlsx

windows10-2004-x64

1

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General

  • Target

    SIGNED CONTRACT AND PI.xlsx

  • Size

    626KB

  • Sample

    230109-j4earsha41

  • MD5

    accd406b15bf726024f1e8874f781df5

  • SHA1

    d64cc1d1e405334755a73b4fd54678f66c19a965

  • SHA256

    072c9d3e6adcee51f16d47d6d67427fa264f5dcbd2e480f576105b2bf8d9a32f

  • SHA512

    a352726a6dbc4970ccd8764ad51352bb49cfbc51040ab620a7cc67b507e77eb792a7994aec25fc0d2fa3ed3ed83bc7c5c655e968cbcda690c589016358644eca

  • SSDEEP

    12288:8xlAx6fFdAQkiK2qz/wkckgfkCGvBeB2RptNsKW3SK1rLw+KUCr:8w69prOTwaDeB2Rp/HiLwR

Score
10/10
remcoswaltar-host 2023persistencerat

Malware Config

Extracted

Family

remcos

Botnet

waltar-Host 2023

C2

muwkege4.zapto.org:2290

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    qqs.exe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-5AOFL5

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    ksd

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      SIGNED CONTRACT AND PI.xlsx

    • Size

      626KB

    • MD5

      accd406b15bf726024f1e8874f781df5

    • SHA1

      d64cc1d1e405334755a73b4fd54678f66c19a965

    • SHA256

      072c9d3e6adcee51f16d47d6d67427fa264f5dcbd2e480f576105b2bf8d9a32f

    • SHA512

      a352726a6dbc4970ccd8764ad51352bb49cfbc51040ab620a7cc67b507e77eb792a7994aec25fc0d2fa3ed3ed83bc7c5c655e968cbcda690c589016358644eca

    • SSDEEP

      12288:8xlAx6fFdAQkiK2qz/wkckgfkCGvBeB2RptNsKW3SK1rLw+KUCr:8w69prOTwaDeB2Rp/HiLwR

    Score
    10/10
    remcoswaltar-host 2023persistencerat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks