General

  • Target

    Payment receipt.exe

  • Size

    488KB

  • Sample

    221202-kz3m8sfc8t

  • MD5

    42f46f5712661c1cde04667a69263196

  • SHA1

    0441839c8aaf53c06ec48e698da276b499ba21b5

  • SHA256

    f1ee84bf85dec48e4b94e5967de93bbed0d1b96ef43d68c2aa0b8ab7675d2c70

  • SHA512

    2955f10a90c57dfc96f4006ce265843e75375be911548f4ea1e0546fa244c1090c746302507a765244b10b8fab4a4d23f57a061d9cc999355256fa9b3ec53821

  • SSDEEP

    12288:VAJQhjuFi1ckK160/7qNPG4GT1jj8MW3XJ7I+GZb6qt+uP8:WJT41ckKE0/4G4u1jj8MWnJ7jG16w+/

Malware Config

Extracted

Family

remcos

Botnet

UC

C2

ucremcz1.ddns.net:1823

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    BIN.exe

  • copy_folder

    BIN

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-X402GF

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    bin

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      Payment receipt.exe

    • Size

      488KB

    • MD5

      42f46f5712661c1cde04667a69263196

    • SHA1

      0441839c8aaf53c06ec48e698da276b499ba21b5

    • SHA256

      f1ee84bf85dec48e4b94e5967de93bbed0d1b96ef43d68c2aa0b8ab7675d2c70

    • SHA512

      2955f10a90c57dfc96f4006ce265843e75375be911548f4ea1e0546fa244c1090c746302507a765244b10b8fab4a4d23f57a061d9cc999355256fa9b3ec53821

    • SSDEEP

      12288:VAJQhjuFi1ckK160/7qNPG4GT1jj8MW3XJ7I+GZb6qt+uP8:WJT41ckKE0/4G4u1jj8MWnJ7jG16w+/

    • Remcos

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Tasks