Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06-04-2024 01:48

General

  • Target

    f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe

  • Size

    891KB

  • MD5

    365611c6c550f6b4d41e017b7f658975

  • SHA1

    b31644d9fb613abfcb0bf7a801db77b4d7fd7ec9

  • SHA256

    f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af

  • SHA512

    6393bd06d1ea7faaccc85469f6b87aaab102064c8871f6ea8c33ea5434d822ddbd59157e50def89219ee0d3ebe09d34423dfc5d23f337b42a134422d71c3f721

  • SSDEEP

    24576:Ig5HJmx9NoiP7+J7v8Dlco1AtasmkDu13xXD7:1Jmx/7zYv8BJ4a1kq1R7

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

paygateme.net:2286

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-WTDTSU

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • 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) 23 IoCs
  • Detects executables packed with SmartAssembly 2 IoCs
  • Suspicious use of SetThreadContext 1 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 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe
    "C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2396
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FCsxaE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2696
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FCsxaE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9CCC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2832
    • C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe
      "C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe"
      2⤵
        PID:2600
      • C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe
        "C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe"
        2⤵
          PID:1724
        • C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe
          "C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe"
          2⤵
            PID:2548
          • C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe
            "C:\Users\Admin\AppData\Local\Temp\f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af.exe"
            2⤵
            • Suspicious use of SetWindowsHookEx
            PID:2436

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          ae2d4f8a327884eba5f4b2455946aeaa

          SHA1

          d709a2b6eacc686d535cc62c65998a603302318c

          SHA256

          30fdfb085ca342f5ea1b7584b6c8e7a960e1d885dd13951d419eef67c96906c8

          SHA512

          b7ac558f6acc6d4766b839cf7b3719a10ab6398e2e98a64bbc60641174211bfc6068e07c3bff770f55dfbbc251d46ffc80d996a330f1b606d119283ae8d3abcc

        • C:\Users\Admin\AppData\Local\Temp\tmp9CCC.tmp

          Filesize

          1KB

          MD5

          85cdac26c8a7b8c249b6778ce4a1403b

          SHA1

          76749f50f2fbbf73cfddc9adbb968291f39b90b2

          SHA256

          5fbdbdbdcfedc069c32c5ed0c2192e1877a797715fc5e67e7d29c728892561c1

          SHA512

          56b0512ff1531b955cbbe8ede233104243638c1610d79d3bc7de713fcacedda7a9ee93a42be74c17bcb5bb55e87c491c06122a5ca103b67345a9e3e8f229d178

        • memory/2396-35-0x0000000073F20000-0x000000007460E000-memory.dmp

          Filesize

          6.9MB

        • memory/2396-1-0x0000000073F20000-0x000000007460E000-memory.dmp

          Filesize

          6.9MB

        • memory/2396-2-0x0000000001DE0000-0x0000000001E20000-memory.dmp

          Filesize

          256KB

        • memory/2396-3-0x0000000000970000-0x0000000000980000-memory.dmp

          Filesize

          64KB

        • memory/2396-4-0x0000000001DA0000-0x0000000001DAC000-memory.dmp

          Filesize

          48KB

        • memory/2396-5-0x0000000005320000-0x00000000053E0000-memory.dmp

          Filesize

          768KB

        • memory/2396-6-0x0000000073F20000-0x000000007460E000-memory.dmp

          Filesize

          6.9MB

        • memory/2396-14-0x0000000001DE0000-0x0000000001E20000-memory.dmp

          Filesize

          256KB

        • memory/2396-0-0x00000000000F0000-0x00000000001D6000-memory.dmp

          Filesize

          920KB

        • memory/2436-34-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-42-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2436-32-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-19-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-17-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-81-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-80-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-37-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-74-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-43-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-73-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-45-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-68-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-51-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-53-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-54-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-59-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-61-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2436-67-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2696-47-0x000000006E2F0000-0x000000006E89B000-memory.dmp

          Filesize

          5.7MB

        • memory/2696-44-0x00000000021C0000-0x0000000002200000-memory.dmp

          Filesize

          256KB

        • memory/2696-40-0x00000000021C0000-0x0000000002200000-memory.dmp

          Filesize

          256KB

        • memory/2696-38-0x000000006E2F0000-0x000000006E89B000-memory.dmp

          Filesize

          5.7MB

        • memory/2696-36-0x000000006E2F0000-0x000000006E89B000-memory.dmp

          Filesize

          5.7MB