Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2024 09:58

General

  • Target

    TSTS 0005A.exe

  • Size

    922KB

  • MD5

    b195643d6d8c3f81c7409533ad14726c

  • SHA1

    c09b56928fb1f448ed9b3610a0b930f77e2ebcfe

  • SHA256

    f4eaa74eb268a58cff6f5d37607758bd49cc00af060da799857ae10cfd59efb2

  • SHA512

    b843153f581be5a77b8575cf09e25333d5eaf5af3b689441ad0af336c4494a6181d5882dfa8b2ba2d90acb64cd3db9ab26f1cf87e1991f996d26cbb6990c5fb8

  • SSDEEP

    24576:JgjHr6DLW5Gaxs00MUVXdtS6seDmw+Op8lCua51:WrpDxclG65mg8lCuo

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

sembe.duckdns.org:14645

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

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    notess

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-P0AEMX

  • 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 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
    "C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.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\vcEDbAjawlTHE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2648
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vcEDbAjawlTHE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5F6E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2736
    • C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
      "C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
      2⤵
        PID:2556
      • C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
        "C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
        2⤵
          PID:2724
        • C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
          "C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
          2⤵
          • Suspicious use of SetWindowsHookEx
          PID:2472

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp5F6E.tmp

        Filesize

        1KB

        MD5

        d2f2e1acea8a64fd3811f2a279e26dd5

        SHA1

        a37db029a9bd58051ccb13862d74d97d62c42128

        SHA256

        19c1ca1829277c41a9bc2ec1514e7660a860177552ab6becbf14ceb64550cef8

        SHA512

        ca58e782584a06b85d446c4d2c13fc7f1a7311f2074e0b3e722ebe98936d564f7b5eaad13cae7e5c39de3e81a4a752c7a3c3e4989889dcd3169555271f1d933d

      • C:\Users\Admin\AppData\Roaming\notess\logs.dat

        Filesize

        144B

        MD5

        b5162480a9ee1a48fab211a4c2209c56

        SHA1

        cd3274495aeaf6f6672dc304288d867f0313dc78

        SHA256

        44fa6b3161ed34fcbc66a80c9a460fe207d4bb4459488428b7643ae332270fa0

        SHA512

        8342969bced846750813a7e46b53dfa88e707742fc109b12e22e3c91b76946e85337a17d472078988439584be098f42f43039af5d9893d6cb5a0f13652bad040

      • memory/2396-26-0x0000000074800000-0x0000000074EEE000-memory.dmp

        Filesize

        6.9MB

      • memory/2396-1-0x0000000074800000-0x0000000074EEE000-memory.dmp

        Filesize

        6.9MB

      • memory/2396-2-0x0000000004CC0000-0x0000000004D00000-memory.dmp

        Filesize

        256KB

      • memory/2396-3-0x0000000000530000-0x0000000000540000-memory.dmp

        Filesize

        64KB

      • memory/2396-4-0x0000000000560000-0x000000000056C000-memory.dmp

        Filesize

        48KB

      • memory/2396-5-0x0000000005400000-0x00000000054C0000-memory.dmp

        Filesize

        768KB

      • memory/2396-0-0x0000000000310000-0x00000000003F8000-memory.dmp

        Filesize

        928KB

      • memory/2472-29-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-35-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-17-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-18-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-19-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2472-20-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-16-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-27-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-14-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-30-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-73-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-72-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-65-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-33-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-15-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-64-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-37-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-38-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-39-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-41-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-56-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-47-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-48-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2472-50-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2648-42-0x000000006EC60000-0x000000006F20B000-memory.dmp

        Filesize

        5.7MB

      • memory/2648-36-0x0000000002720000-0x0000000002760000-memory.dmp

        Filesize

        256KB

      • memory/2648-34-0x0000000002720000-0x0000000002760000-memory.dmp

        Filesize

        256KB

      • memory/2648-32-0x000000006EC60000-0x000000006F20B000-memory.dmp

        Filesize

        5.7MB

      • memory/2648-31-0x000000006EC60000-0x000000006F20B000-memory.dmp

        Filesize

        5.7MB