General

  • Target

    FDS00978900008789.exe

  • Size

    1.4MB

  • Sample

    240118-kvf9faghc4

  • MD5

    4035b319a633da95a6dcd5d9c4ea974b

  • SHA1

    43d6e37f2edd8c710e0c1b437f5a88c9b007b279

  • SHA256

    c7f390ce3d021724c94adc4ac29807f4ecf8e3c1eb5b17e3b38808904a53c01f

  • SHA512

    794bc533c0ea5ddd726407f71cfbdee0fbd2461c369f347b4cd138e87563f3845bc3d5d371c284ae4f29e1a293462dd2ae98c68c9462be84ee77881bea792440

  • SSDEEP

    24576:AqDEvCTbMWu7rQYlBQcBiT6rprG8axmbWwSrHEaaGsiM1XXLBWI:ATvC/MTQYxsWR7axmbGrH1arXt

Malware Config

Extracted

Family

remcos

Botnet

PC

C2

107.175.229.139:8087

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-X5MJYU

  • 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

      FDS00978900008789.exe

    • Size

      1.4MB

    • MD5

      4035b319a633da95a6dcd5d9c4ea974b

    • SHA1

      43d6e37f2edd8c710e0c1b437f5a88c9b007b279

    • SHA256

      c7f390ce3d021724c94adc4ac29807f4ecf8e3c1eb5b17e3b38808904a53c01f

    • SHA512

      794bc533c0ea5ddd726407f71cfbdee0fbd2461c369f347b4cd138e87563f3845bc3d5d371c284ae4f29e1a293462dd2ae98c68c9462be84ee77881bea792440

    • SSDEEP

      24576:AqDEvCTbMWu7rQYlBQcBiT6rprG8axmbWwSrHEaaGsiM1XXLBWI:ATvC/MTQYxsWR7axmbGrH1arXt

    • Remcos

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

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks