General

  • Target

    BUNKER INVOICE ‘MV.SUN OCEAN.pdf.arj.zip

  • Size

    9KB

  • Sample

    241128-k8fvtsynap

  • MD5

    242e55b5b7f0b02c2b2a7a4f4f0fc59e

  • SHA1

    d2b407ccc30ee5c580eec9b3d77ee5eeada44684

  • SHA256

    03ae3eda7c206dabd5536de047c178cdc7ef498cb76e350306b883b8468ca4eb

  • SHA512

    057539041dee1615351f64374baff1731baf399d5b85228c03bb48a3d008e3588947d377012410adbcf5925bf1f5bcd068279187d6d851a8db33c05e973a38ee

  • SSDEEP

    192:Prx/bwU7lmOpMKz9po+iuV9xxVCVMmK8tijCSiNTKR6drfQ:PF/tppoUUVM6SGKsNfQ

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

154.216.18.157:2404

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-N639VY

  • 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

      BUNKER INVOICE ‘MV.SUN OCEAN.pdf.vbs

    • Size

      17KB

    • MD5

      8728fd6ce048778714ac79991e78bbea

    • SHA1

      2dd28d298edf6af2ca9f1511d92545c5a3f470a3

    • SHA256

      736b1fd992d69ce4f46a4f4fa5b892e659536c493224b68c022d8fd193c5e88a

    • SHA512

      9c08b2a198adf14071d86eab3b1c29bec9bbad390952c43f06d1964231df5540fe807ae2d98d7b2198ced3ce9d519352ac4f4b87b25901424794463871fe601a

    • SSDEEP

      384:UzVKy+Tt5Q4Lemns5EuZdETHH+ouUY+cTVCtRFBBKg:qVx+Tt5UGsLErLuQc+nBJ

    • Remcos

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

    • Remcos family

    • 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

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks