General

  • Target

    f652bc01dbf92b470782f3be94b4597d47dace5c2fc32750d0c145fa3cffe7f6

  • Size

    18.1MB

  • Sample

    240902-k536ysxgmh

  • MD5

    76847e889a4f08d12ab8f8c793e31b07

  • SHA1

    d8723e677ba39d07a261fecac64eede880ed8812

  • SHA256

    f652bc01dbf92b470782f3be94b4597d47dace5c2fc32750d0c145fa3cffe7f6

  • SHA512

    4ced1fb9284c3a0b6ecf4c67f91c50ced3b89ffbcb45935d9bdaee6a18dc34ce06602b03596bd68c84b3047bdd64e58ea45b0da94f4a80a15aef927909dee20d

  • SSDEEP

    393216:zpHnu9zuNQw1fPpzTp0TeX0C8CwdQklwxREDZKqBw6kCjPk8nZ:zF4aV1Htw80+2lyrEDZK1CY8Z

Malware Config

Extracted

Family

remcos

Botnet

Rain

C2

nzobaku.ddns.net:8081

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-OVTDA2

  • 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

      b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe

    • Size

      18.5MB

    • MD5

      1edf285969ddea6233f47882315193c0

    • SHA1

      a7f25cf4a08b478e0b046a4013ce73cd0edaeba6

    • SHA256

      b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65

    • SHA512

      3315d921e8089a6b4d8f2bf26b3335a1dbd8151f2545e2d4790026e4d33d7a2a2d88f791e94cb1f3662e1a3a57079f3eb4960ffcdbd4e99b29672653487d8b8a

    • SSDEEP

      393216:+nfbWnfb7nfbanfbonfbJnfbJnfb9nfb+nfbwnfbWnfb:+ninfnWnknVntnhnincnKn

    • Remcos

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks