Analysis

  • max time kernel
    90s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25/08/2024, 11:00

General

  • Target
    vcxsrv.exe
  • Size 3.6MB
  • Sample240825-m4dwsasfln
  • SHA256 a00a750402f9940073e1b4be8cf260f368e1a23ecf6f637de3aa4d4b4cd4e213
  • MD5 SHA1 SHA512 SSDEEP
Score
1/10

Malware Config

Signatures

  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\vcxsrv.exe
    "C:\Users\Admin\AppData\Local\Temp\vcxsrv.exe"
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3388
    • C:\Users\Admin\AppData\Local\Temp\xkbcomp.exe
      "C:\Users\Admin\AppData\Local\Temp\xkbcomp" -w 1 "-RC:\Users\Admin\AppData\Local\Temp\xkbdata" -xkm "C:\Users\Admin\AppData\Local\Temp\xkb_a02956" -em1 "The XKEYBOARD keymap compiler (xkbcomp) reports:" -emp "> " -eml "Errors from xkbcomp are not fatal to the X server" "C:\Users\Admin\AppData\Local\Temp\server-0.xkm"
      2⤵
        PID:3484
      • C:\Users\Admin\AppData\Local\Temp\xkbcomp.exe
        "C:\Users\Admin\AppData\Local\Temp\xkbcomp" -w 1 "-RC:\Users\Admin\AppData\Local\Temp\xkbdata" -xkm "C:\Users\Admin\AppData\Local\Temp\xkb_a02956" -em1 "The XKEYBOARD keymap compiler (xkbcomp) reports:" -emp "> " -eml "Errors from xkbcomp are not fatal to the X server" "C:\Users\Admin\AppData\Local\Temp\server-0.xkm"
        2⤵
          PID:3980

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            server-0.xkm

            • Path C:\Users\Admin\AppData\Local\Temp\server-0.xkm
            • Size 11KB
            • SHA256 6f35e27783e77695a0b10b2fad9980d8d4929e4f01d313820550e36782b3d94d
            • MD5 SHA1 SHA512 SSDEEP

            server-0.xkm

            • Path C:\Users\Admin\AppData\Local\Temp\server-0.xkm
            • Size 11KB
            • SHA256 215ba1c65d720e1df3072e490e6aed1b0e4bbd0d03cf4d402fe7c4a6aaf1334b
            • MD5 SHA1 SHA512 SSDEEP

            xkb_a02956

            • Path C:\Users\Admin\AppData\Local\Temp\xkb_a02956
            • Size 311B
            • SHA256 46d3af7295ff52ea426d3a72cc25c2a55ede1dbc8d8c9a977abc92842acdb181
            • MD5 SHA1 SHA512

            xkb_a02956

            • Path C:\Users\Admin\AppData\Local\Temp\xkb_a02956
            • Size 343B
            • SHA256 5a0e759b25e97915fe7380d76866dfd692d218faa7e9c6b10377fbcb688e4e55
            • MD5 SHA1 SHA512