Analysis

  • max time kernel
    149s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 03:05

General

  • Target

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe

  • Size

    990KB

  • MD5

    ae507105cceba5aacb48465edc216829

  • SHA1

    3ce82cbc3bfe6ce6cc80548b3972fe50474ee58d

  • SHA256

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847

  • SHA512

    789fb309e65a1cff6b56ea1101aaa81739ab7a9ac4082aea12a6d4349cb2b18daf4b1417817e4425dadcd3171be7b4946f032ffe32ff5e5dc5497d6c8ae0e5bf

  • SSDEEP

    24576:5Xz87bPA2b+O0v7c+6ShVZ5II39pexAJSgEiYG77:5Xz87k/O0vAkhVZ63KMG7

Malware Config

Extracted

Family

remcos

Botnet

DESK

C2

198.27.121.194:2024

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-EQJXDT

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 26 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
    "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LCIBkTUxHQE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3044
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCIBkTUxHQE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF5C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2392
    • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
      "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
      2⤵
        PID:2884
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2880
        • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
          C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\aekuwfhtuievsnxawznq"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1576
        • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
          C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\cypfwxsnqqwadblegkartbsl"
          3⤵
            PID:1384

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmpF5C.tmp

              Filesize

              1KB

              MD5

              7234d0bb6592af649c64529f26d8f297

              SHA1

              340d409122ae30567b2f44699a2a0accb6c8a2ee

              SHA256

              8d5768a8e0c47cb84fcdbf8e359bbc6e6d12683166a503e3ce3f5d41b584191a

              SHA512

              282f3c6e958c2cb9d60fe50c298584d400b51b674d48b20cf6404a964574bbb276742b2d27069d26ad6202d5867cb5a7f7e86272a1358aa91425262e418782b2

            • memory/1576-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/1576-59-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/1576-63-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/1576-65-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/1576-70-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2052-4-0x00000000006C0000-0x00000000006CA000-memory.dmp

              Filesize

              40KB

            • memory/2052-7-0x0000000074E80000-0x000000007556E000-memory.dmp

              Filesize

              6.9MB

            • memory/2052-8-0x00000000005D0000-0x0000000000610000-memory.dmp

              Filesize

              256KB

            • memory/2052-6-0x0000000005A90000-0x0000000005B56000-memory.dmp

              Filesize

              792KB

            • memory/2052-5-0x0000000000710000-0x000000000071E000-memory.dmp

              Filesize

              56KB

            • memory/2052-39-0x0000000074E80000-0x000000007556E000-memory.dmp

              Filesize

              6.9MB

            • memory/2052-3-0x00000000005C0000-0x00000000005D4000-memory.dmp

              Filesize

              80KB

            • memory/2052-2-0x00000000005D0000-0x0000000000610000-memory.dmp

              Filesize

              256KB

            • memory/2052-1-0x0000000074E80000-0x000000007556E000-memory.dmp

              Filesize

              6.9MB

            • memory/2052-0-0x0000000001260000-0x000000000135E000-memory.dmp

              Filesize

              1016KB

            • memory/2880-55-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-49-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2880-34-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-36-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-77-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-28-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-76-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-75-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-42-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-74-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-43-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-45-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-44-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-46-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-47-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-48-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-30-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-51-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-73-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-54-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-26-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-56-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-24-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-22-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-20-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-18-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-16-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-71-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2880-72-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/3044-52-0x000000006EFB0000-0x000000006F55B000-memory.dmp

              Filesize

              5.7MB

            • memory/3044-41-0x00000000023D0000-0x0000000002410000-memory.dmp

              Filesize

              256KB

            • memory/3044-40-0x00000000023D0000-0x0000000002410000-memory.dmp

              Filesize

              256KB

            • memory/3044-38-0x000000006EFB0000-0x000000006F55B000-memory.dmp

              Filesize

              5.7MB

            • memory/3044-37-0x000000006EFB0000-0x000000006F55B000-memory.dmp

              Filesize

              5.7MB