General

  • Target

    FE_50602072400310161019800100024010042047501200000000pdf.zip

  • Size

    19KB

  • Sample

    241127-s45bmawkel

  • MD5

    fa0aa0ea4a2a884f6f791a690b11727d

  • SHA1

    4ca7ee68e2373a8a4f8f9544732c806708b72d1b

  • SHA256

    62f66044c416d006f34290ddd35454a2b31e17bea0780553032fc10c2d715b63

  • SHA512

    28ee3d96eebd384a3b0e716f4c302bdec111becaeb440fc1eb64f28187a408c76e3da1d8718ac6e90ce7f3a826a84d1df7d89e11836f88929d7ddfbc6bdd4977

  • SSDEEP

    384:L2DWXzmu00H2n21oyERSEUuwXwAU3/uniGNjn61/TzJwM++BHsg77:La4zzIKzELQw3vVGNu1/Tzb++Cw

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

8766e34g8.duckdns.org:3782

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-93TSMD

  • 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

      FE_50602072400310161019800100024010042047501200000000·pdf.vbs

    • Size

      33KB

    • MD5

      d6f45ebf3891c5dbabcc90063267a500

    • SHA1

      e5943a4dcacd697d58287bf70e45cf054015e881

    • SHA256

      1bd88defe4347880e470dc8536cab819495a34c4320b1dac9fa4952e730f0962

    • SHA512

      25952f18ea9a949b745de4822e9a6830ea6c16d643d996db9275f8be7bc10be70a40581b48034be5ebd07720f229b54b38b7effa4e274c9a795314669a388cff

    • SSDEEP

      768:YNdasoF+ZTskr3M28uNK7Rkc94VhNxLKe9KhZh9H5u7jCx4GVVBXgdrnGu:6dasOaAkrHoNYjbU/z9jQdCu

    • Remcos

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

    • Remcos family

    • UAC bypass

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Blocklisted process makes network request

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks