Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    12-08-2024 21:13

General

  • Target

    remcos_a.exe

  • Size

    483KB

  • MD5

    b1b853c8e73a491934fcfb8d20c88ffd

  • SHA1

    b2b93eb66a46504fd389a6e8e207d83ff85930d8

  • SHA256

    4b80f8820d44f0b53482e7a5a5cfe6d44a0e2799055526e83d3779a241b4a639

  • SHA512

    2f3cdb5277a3d3cc8ea2418cf80d05afa9ce0af01ede5c85c65faa89143537d4742a17a5e7a70784cc995fd7e2075030b74c8e1086f5614f7528b12efff35265

  • SSDEEP

    6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrHT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBUT4

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

software-julia.gl.at.ply.gg:17106

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

    true

  • 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-SMNGDV

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    roblox

Signatures

  • Remcos

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

  • UAC bypass 3 TTPs 2 IoCs
  • Deletes itself 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry key 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\remcos_a.exe
    "C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2860
      • C:\Windows\SysWOW64\reg.exe
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • UAC bypass
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:2736
    • \??\c:\program files (x86)\internet explorer\iexplore.exe
      "c:\program files (x86)\internet explorer\iexplore.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\Windows\SysWOW64\cmd.exe
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2800
        • C:\Windows\SysWOW64\reg.exe
          C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
          4⤵
          • UAC bypass
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:2596
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
          PID:2772
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vypdcxbuvbwcre.vbs"
          3⤵
          • Deletes itself
          • System Location Discovery: System Language Discovery
          PID:2584

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      230B

      MD5

      6d1104542ba8ffaf3ca1fda90b152251

      SHA1

      30c7d86242117b2cfbc3e2ea8ea31fd34df705c4

      SHA256

      a7f1b2a1b420c669b14172015544b7da6b8d6bc50cf9c98d57bbe6c689a61abf

      SHA512

      dc003927fe930325be72de00b59c5a1b8091325409d8c432fbb90b16c6cfc345ffd169cf47bb7a75e421fd68c8826404299a3fd9af0880c83d462bb6c46b39db

    • C:\Users\Admin\AppData\Local\Temp\vypdcxbuvbwcre.vbs

      Filesize

      504B

      MD5

      088cdc83bbaefe8ed56dafb50c9d61b1

      SHA1

      01a8a9188545dfe84b50b428e4bafc0f65d4719d

      SHA256

      b74b99fbcd0c68b32e776827b3688f55d8f5746a35e92a82d1a019c91fe87b9c

      SHA512

      5710d459135ec2a7e76e27dc799068d48adc909294d6de76140adfdb37c3ae101e71bb4365334fa78e16ba9b55aec168b2ce9d79558d82f255617a0b0a52c5a3

    • memory/2772-16-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2772-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2772-18-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2772-19-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2812-32-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-37-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-11-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-9-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-5-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-21-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-23-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-22-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-24-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-28-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-29-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-33-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-3-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-0-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2812-36-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-6-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-40-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-52-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-53-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-56-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-57-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-60-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-61-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-62-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-63-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-64-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-65-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-67-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-85-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-74-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB

    • memory/2812-4-0x0000000000080000-0x0000000000102000-memory.dmp

      Filesize

      520KB