Analysis

  • max time kernel
    81s
  • max time network
    79s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    12-08-2024 05:54

General

  • Target

    remcos_a.exe

  • Size

    483KB

  • MD5

    5b2027af10b3d0fb8fc1a5aca4fe2884

  • SHA1

    cd342301a2db8ba6bb540a7c3d1ab8491974991c

  • SHA256

    1aa8e0e39ef44f0906f9f8036df2eff25f53c985a22b24c4f8ac994c3cd5e6d2

  • SHA512

    1beb46efcad6bbacfd9daf3359609f502aecd8a546477d50b0de38ac161fcad7bcb1540fd6375a2adcbe0fdd21ca291a140847ed01f83942730996b8fc816413

  • SSDEEP

    6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrLT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBIT4

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.168.1.252:2404

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-K3NAY7

  • 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 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:2292
    • \??\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:2012
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
          PID:3056
    • C:\Program Files\VideoLAN\VLC\vlc.exe
      "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\SplitTest.M2T"
      1⤵
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:2664

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      308B

      MD5

      7e6c1d8d37a2fa0d97dcee7b70a1ee64

      SHA1

      ea43a941f27158e6aa7f32993eb86b48cdefb822

      SHA256

      8e0f7dd40b6dadb8405109dff0c45269958c748b046e777388b265d94306ce60

      SHA512

      40672b779329044f6a4c02abbbeec9bde1d0819edf2228dbf02704567a30ff609f8d0cc5de8a20b4b02569e6f88b5bb432f163aa738f5992708233f43ba479bc

    • memory/2012-20-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-8-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-5-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-0-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2012-12-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-2-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-91-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-89-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-84-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-83-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-4-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-78-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2012-77-0x0000000000130000-0x00000000001B2000-memory.dmp

      Filesize

      520KB

    • memory/2664-45-0x000007FEF6C30000-0x000007FEF6C41000-memory.dmp

      Filesize

      68KB

    • memory/2664-54-0x000007FEF48A0000-0x000007FEF48C8000-memory.dmp

      Filesize

      160KB

    • memory/2664-34-0x000007FEF7CF0000-0x000007FEF7D0D000-memory.dmp

      Filesize

      116KB

    • memory/2664-28-0x000007FEF6790000-0x000007FEF6A46000-memory.dmp

      Filesize

      2.7MB

    • memory/2664-35-0x000007FEF7C40000-0x000007FEF7C51000-memory.dmp

      Filesize

      68KB

    • memory/2664-37-0x000007FEF54D0000-0x000007FEF56DB000-memory.dmp

      Filesize

      2.0MB

    • memory/2664-38-0x000007FEF7780000-0x000007FEF77C1000-memory.dmp

      Filesize

      260KB

    • memory/2664-36-0x000007FEF56E0000-0x000007FEF6790000-memory.dmp

      Filesize

      16.7MB

    • memory/2664-39-0x000007FEF71A0000-0x000007FEF71C1000-memory.dmp

      Filesize

      132KB

    • memory/2664-40-0x000007FEF7730000-0x000007FEF7748000-memory.dmp

      Filesize

      96KB

    • memory/2664-41-0x000007FEF7180000-0x000007FEF7191000-memory.dmp

      Filesize

      68KB

    • memory/2664-42-0x000007FEF7160000-0x000007FEF7171000-memory.dmp

      Filesize

      68KB

    • memory/2664-43-0x000007FEF7140000-0x000007FEF7151000-memory.dmp

      Filesize

      68KB

    • memory/2664-44-0x000007FEF6C50000-0x000007FEF6C6B000-memory.dmp

      Filesize

      108KB

    • memory/2664-32-0x000007FEF7D30000-0x000007FEF7D47000-memory.dmp

      Filesize

      92KB

    • memory/2664-48-0x000007FEF6C10000-0x000007FEF6C28000-memory.dmp

      Filesize

      96KB

    • memory/2664-49-0x000007FEF6BE0000-0x000007FEF6C10000-memory.dmp

      Filesize

      192KB

    • memory/2664-50-0x000007FEF6B70000-0x000007FEF6BD7000-memory.dmp

      Filesize

      412KB

    • memory/2664-51-0x000007FEF4E20000-0x000007FEF4E9C000-memory.dmp

      Filesize

      496KB

    • memory/2664-52-0x000007FEF49B0000-0x000007FEF49C1000-memory.dmp

      Filesize

      68KB

    • memory/2664-53-0x000007FEF46B0000-0x000007FEF4707000-memory.dmp

      Filesize

      348KB

    • memory/2664-33-0x000007FEF7D10000-0x000007FEF7D21000-memory.dmp

      Filesize

      68KB

    • memory/2664-55-0x000007FEF4870000-0x000007FEF4894000-memory.dmp

      Filesize

      144KB

    • memory/2664-56-0x000007FEF4830000-0x000007FEF4848000-memory.dmp

      Filesize

      96KB

    • memory/2664-57-0x000007FEF4800000-0x000007FEF4823000-memory.dmp

      Filesize

      140KB

    • memory/2664-58-0x000007FEF47E0000-0x000007FEF47F1000-memory.dmp

      Filesize

      68KB

    • memory/2664-59-0x000007FEF47C0000-0x000007FEF47D2000-memory.dmp

      Filesize

      72KB

    • memory/2664-60-0x000007FEF4790000-0x000007FEF47B1000-memory.dmp

      Filesize

      132KB

    • memory/2664-61-0x000007FEF4770000-0x000007FEF4783000-memory.dmp

      Filesize

      76KB

    • memory/2664-72-0x000000013FD60000-0x000000013FE58000-memory.dmp

      Filesize

      992KB

    • memory/2664-74-0x000007FEF6790000-0x000007FEF6A46000-memory.dmp

      Filesize

      2.7MB

    • memory/2664-73-0x000007FEFB630000-0x000007FEFB664000-memory.dmp

      Filesize

      208KB

    • memory/2664-75-0x000007FEF56E0000-0x000007FEF6790000-memory.dmp

      Filesize

      16.7MB

    • memory/2664-31-0x000007FEF7D50000-0x000007FEF7D61000-memory.dmp

      Filesize

      68KB

    • memory/2664-30-0x000007FEFB8E0000-0x000007FEFB8F7000-memory.dmp

      Filesize

      92KB

    • memory/2664-27-0x000007FEFB630000-0x000007FEFB664000-memory.dmp

      Filesize

      208KB

    • memory/2664-26-0x000000013FD60000-0x000000013FE58000-memory.dmp

      Filesize

      992KB

    • memory/2664-29-0x000007FEFB940000-0x000007FEFB958000-memory.dmp

      Filesize

      96KB

    • memory/3056-15-0x0000000000110000-0x0000000000192000-memory.dmp

      Filesize

      520KB

    • memory/3056-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/3056-17-0x0000000000110000-0x0000000000192000-memory.dmp

      Filesize

      520KB

    • memory/3056-18-0x0000000000110000-0x0000000000192000-memory.dmp

      Filesize

      520KB

    • memory/3056-23-0x0000000000110000-0x0000000000192000-memory.dmp

      Filesize

      520KB