General

  • Target

    證據_89004161-000002102-66_20241128·pdf.vbs

  • Size

    33KB

  • Sample

    241128-vvvf6stqbv

  • MD5

    b87c82bba48c44f8fc387ecd6100ff0e

  • SHA1

    2cdcb7b8b4f5a8b0501a121b6b4264aa7c6b2f57

  • SHA256

    20100ee5a74b50849ea1a00363a6751320c9aab43ba31859f79147af1b56b509

  • SHA512

    442d105706dcc997c39a141d7a944bbb961e8948d15caee81814f1a6d6245e46b00bf98e893c1623bd92b12b1ac440432fd26f4fd9166c5ffea8ac9a575af189

  • SSDEEP

    768:5KSasMUqkx36r142byXNoPNhZqpCtHki2ynMVVX09rkFJC:ISas/RF6hWyPN/MbZ09oFM

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

      證據_89004161-000002102-66_20241128·pdf.vbs

    • Size

      33KB

    • MD5

      b87c82bba48c44f8fc387ecd6100ff0e

    • SHA1

      2cdcb7b8b4f5a8b0501a121b6b4264aa7c6b2f57

    • SHA256

      20100ee5a74b50849ea1a00363a6751320c9aab43ba31859f79147af1b56b509

    • SHA512

      442d105706dcc997c39a141d7a944bbb961e8948d15caee81814f1a6d6245e46b00bf98e893c1623bd92b12b1ac440432fd26f4fd9166c5ffea8ac9a575af189

    • SSDEEP

      768:5KSasMUqkx36r142byXNoPNhZqpCtHki2ynMVVX09rkFJC:ISas/RF6hWyPN/MbZ09oFM

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Network Share Discovery

      Attempt to gather information on host network.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks