Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    21-05-2024 19:23

General

  • Target

    062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5.exe

  • Size

    975KB

  • MD5

    6bc3017aa0b572802c23e8fad4c7a612

  • SHA1

    262fb0d7951854d4ba58ad2a38480fb0bbe4f6d1

  • SHA256

    062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5

  • SHA512

    86c6dd6d2786d01990d86b4b69d624aa373f441e4b25f6730071a5336eb32939874e8c9dd445330dfa33a5598c23c7427b6a741ecdc178678507fcab0a1b1354

  • SSDEEP

    24576:8LZq8lDaXLp5C7UMUoloIG8h3IP8trNwNoZ:8oUDaXLnC7Ia68FCO

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

46.183.223.69:13452

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-UJROWN

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5.exe
    "C:\Users\Admin\AppData\Local\Temp\062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5.exe
      "C:\Users\Admin\AppData\Local\Temp\062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2404
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetWindowsHookEx
          PID:2584

Network

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

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Remcos\logs.dat
    Filesize

    144B

    MD5

    daab2a43008f16c49048e5c6319ef5d0

    SHA1

    1baaced228b03e0b976fed98fb11b5dbbb78a0e1

    SHA256

    28d90c39bc8b678a6641bf15d33aba8c9cb8b0513c34a77ba787729e7f4ce047

    SHA512

    abe4c28a155d8a326865cdecde581a08cdb6d5996ce9620f33e23bcf2e2388cb531b1de287591d5e93a990a69261b3031b4548e36eb4cf4d02037a596aaa434f

  • \ProgramData\Remcos\remcos.exe
    Filesize

    975KB

    MD5

    6bc3017aa0b572802c23e8fad4c7a612

    SHA1

    262fb0d7951854d4ba58ad2a38480fb0bbe4f6d1

    SHA256

    062a2cab613158f0f8ed1d090763270e7956407350767e47822828f076193cf5

    SHA512

    86c6dd6d2786d01990d86b4b69d624aa373f441e4b25f6730071a5336eb32939874e8c9dd445330dfa33a5598c23c7427b6a741ecdc178678507fcab0a1b1354

  • memory/1044-1-0x0000000001210000-0x000000000130A000-memory.dmp
    Filesize

    1000KB

  • memory/1044-2-0x00000000741C0000-0x00000000748AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1044-3-0x0000000005910000-0x0000000005A0A000-memory.dmp
    Filesize

    1000KB

  • memory/1044-4-0x00000000004D0000-0x00000000004F2000-memory.dmp
    Filesize

    136KB

  • memory/1044-5-0x00000000004F0000-0x00000000004FC000-memory.dmp
    Filesize

    48KB

  • memory/1044-6-0x00000000001E0000-0x00000000001F0000-memory.dmp
    Filesize

    64KB

  • memory/1044-7-0x0000000005E80000-0x0000000005F40000-memory.dmp
    Filesize

    768KB

  • memory/1044-0-0x00000000741CE000-0x00000000741CF000-memory.dmp
    Filesize

    4KB

  • memory/1044-28-0x00000000741C0000-0x00000000748AE000-memory.dmp
    Filesize

    6.9MB

  • memory/2404-20-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-16-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-15-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2404-14-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-13-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-12-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-11-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-22-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-8-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2404-10-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-64-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-65-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-58-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-57-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-54-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-53-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2584-91-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-89-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-84-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-83-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-70-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-71-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-77-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2584-78-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2696-31-0x00000000741C0000-0x00000000748AE000-memory.dmp
    Filesize

    6.9MB

  • memory/2696-32-0x0000000000E50000-0x0000000000F4A000-memory.dmp
    Filesize

    1000KB

  • memory/2696-33-0x00000000741C0000-0x00000000748AE000-memory.dmp
    Filesize

    6.9MB

  • memory/2696-59-0x00000000741C0000-0x00000000748AE000-memory.dmp
    Filesize

    6.9MB