General

  • Target

    11112024_1326_11112024_전자세금계산서·pdf.zip

  • Size

    45KB

  • Sample

    241111-qph4qszcnp

  • MD5

    e20b45f8e02f65be448d8dcb4227b10d

  • SHA1

    866a835f83ebd40cd5261b9f3dd87c45b352a286

  • SHA256

    26e43271d698c8a1fcc996749109f77b779dd533dc0813513278947db90477b9

  • SHA512

    db7cec2e27f92b921017700237de8d0d33b41d32758e6e69b6bbd2e83ca612e0cd54e29ffd5b4cfc029c2cda37cf690f362762612d0b2350c77cf10ebbbb41d2

  • SSDEEP

    768:GSb1CrRDLiXY+gnyfuxlspIL0IQSYSH1OqTJ4sbgQvOY4ljtZonqKgeaJ4VNIK2n:Gh3i0yfXIQEVJTJnxqKgD/BqwqPG

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

13hindi4pistatukoy4tra.duckdns.org:47392

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-7IIE67

  • 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

      전자세금계산서·pdf.vbs

    • Size

      86KB

    • MD5

      8b88faca30c1d912d945515b0edce924

    • SHA1

      62d5bee19f043112784832da29a423e1a35cdbae

    • SHA256

      2a3615e8c977f2a9411c9fef294c7dd53986ce084579340b55977544fc94f143

    • SHA512

      be3f1dcdb304cf2e72c9f305cc24c3cb99c6a7579b5d5c69c77f14cdfb12dad82cc3b1ba875d0e94c86cafc740a10a4bfc7eb809c58b9c01ece4dc1fc1e549f9

    • SSDEEP

      1536:R70tt9i0kFFGd9p6puoNyVnJrsI/FBqqOkbSApBknXZ8Y4apgi1VdXaAj2LvbAP:RQL9ihHU9Yu4kn1OEDp6nXZ8YjpTVdus

    • 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

    • 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

    • 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