General

  • Target

    URGENTDHLinvoiceSG00101637Adobepdf.vbs

  • Size

    15KB

  • Sample

    241125-gzwcdasras

  • MD5

    84183b62bf0c860efeaea9604efbfe3a

  • SHA1

    4cc58ad007613902ff2118cb7091042f37ba394f

  • SHA256

    b4eff9a95f5eeeaee8c4e4a8ce366f478acf9f309e1df6db8a93375045982c5a

  • SHA512

    916c80269eec78f3391e67819a3fa9a4a64a52a2e7909c5a2a3f310211e1aba01534a932f6df06df8d70ec0ea7d641c7e5b9b5e527045a6f27b65a128f19a81b

  • SSDEEP

    384:WxaWEl8MDBPMpf/X1tBoCPSn5otbq+4Xs4kDyLuoWt:gEl8MDBPy3X7BoBCtbq+4XspDyHWt

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

gnsuw4-nsh6-mnsg.duckdns.org:3613

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-8OIXMO

  • 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

      URGENTDHLinvoiceSG00101637Adobepdf.vbs

    • Size

      15KB

    • MD5

      84183b62bf0c860efeaea9604efbfe3a

    • SHA1

      4cc58ad007613902ff2118cb7091042f37ba394f

    • SHA256

      b4eff9a95f5eeeaee8c4e4a8ce366f478acf9f309e1df6db8a93375045982c5a

    • SHA512

      916c80269eec78f3391e67819a3fa9a4a64a52a2e7909c5a2a3f310211e1aba01534a932f6df06df8d70ec0ea7d641c7e5b9b5e527045a6f27b65a128f19a81b

    • SSDEEP

      384:WxaWEl8MDBPMpf/X1tBoCPSn5otbq+4Xs4kDyLuoWt:gEl8MDBPy3X7BoBCtbq+4XspDyHWt

    • 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

    • 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