General

  • Target

    30092024_1236_29092024_11309-電信費電子通知單·pdf.zip

  • Size

    32KB

  • Sample

    240930-ps1yaavhpr

  • MD5

    ddf3c85ab0ee37898d93996d7bc56112

  • SHA1

    776cd665636afb2863a99ff794a48c2135c6817c

  • SHA256

    31fee7dd5362e8c0e69e6ab90d01dfc4bbd1539edd38d75530c416585f8bd1b5

  • SHA512

    afcf00857a6d78d869941c5fa1cb8f13578b6bf3cc642ce4bd864329e48d224eb2421dddf2d0cc81353584b28cd9cb590a55bdaf068bb12e80f2dc57897f8e42

  • SSDEEP

    768:onis5syQB+Opb7MXT2QjHDDzBgguIlDR07Myq98e8:YuyQIOd7Mj2Qn5g4U08d

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • delete_file

    false

  • hide_file

    true

  • 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-WDQFG0

  • 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

      11309-電信費電子通知單·pdf.vbs

    • Size

      74KB

    • MD5

      cd9505a0c492be1e52f012f624835147

    • SHA1

      bece8abdda5efe16102c4c04d66cb1ab644b0046

    • SHA256

      9f4e20aa889ca5e2dd1e9107fb07a51fae199a243b3c6b145863913f07d198b0

    • SHA512

      b0ab14293923b2ca6a06a0c198b42c8f18d463a2e374e230d6a7f9c13afa49cf4c0c9c87b2c4a9687eb5f6ddf2b7644a1f500cf4077148aaa21a3f23effb00be

    • SSDEEP

      1536:sHyobezwnrkAkPh3JXNP3kK8A+NtZD8A/KtMNVAf:sHyMCAqhtKNtd8bf

    • Remcos

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • 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