General

  • Target

    #Inv_PI_006924434650_pdf.zip

  • Size

    883KB

  • Sample

    240523-pexzgagg89

  • MD5

    f93ab84bbec6c1ee1656b93ba68f0f68

  • SHA1

    48a43dcb74328a9b127ed0a6317d5f74ba4ff132

  • SHA256

    3054a87277b711bb95f9079c7b2ed9e35f85d4bc2f10d13b876304254b5aad3a

  • SHA512

    9467cc15ee86b9803607e95e3194140719e3f415f30cf8773c76f448858e29424257548ca23286a42e79cbe5b25191564d9f371ca0f23e5b793137121a622dfc

  • SSDEEP

    24576:H9rJW0lOZThmrMNdsT8iVk7eU9JbmgfFVdVCZ:RJW0ktNeHVK7a6FFCZ

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.95.169.137:2404

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

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NG20QI

  • 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

      #Inv_PI_{number_12}_pdf.exe

    • Size

      1.1MB

    • MD5

      96a62642b79fcb88da4f854b2c46c64c

    • SHA1

      1778d5bad1acb999458092745af2a6ac3fce39a3

    • SHA256

      472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1

    • SHA512

      4643ede4706e904a6b6efd4c59d29c5a58c3aa3614de1d4d17e02d8ad33c4ecfd2bfe61de335e726c8ec085717afef77e9146eab4f71fd8a25758a2f3612d457

    • SSDEEP

      24576:+8lmSlcXrLArMThOTAiVOpoUJ3jEDFXF9bo:9mSubfQrVS1xjcFDo

    • Remcos

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

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks