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Analysis

  • max time kernel
    13s
  • max time network
    13s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    05/01/2025, 13:14

General

  • Target

    ChromeUpdate.exe

  • Size

    119KB

  • MD5

    eedc846c4cf322bbcf849a4af793ced5

  • SHA1

    77fa1a6feb62bd77d30be181696802e13524da8d

  • SHA256

    b3ccfc4ddc7f6abf0fa7606be8495acd20c23f85ab23c2fa8bfe43e84befa126

  • SHA512

    6eb5963fa6d4cca6a2de25850cf47064d8ba523223a55048600fce8cadd120487507af50b0fd39c14b20bed3b976bb9510b5699efc7533e540350101c087ba2c

  • SSDEEP

    3072:Y/aazycnfYOgWPyZ9dOpbZqHVQWqzCrAZuuQD:HIsWqndOpb4K

Malware Config

Extracted

Family

toxiceye

C2

https://api.telegram.org/bot7742822790:AAHkizf3bilCkIqp8NNVcbWObKSVKo8Xifo/sendMessage?chat_id=7053620590

Signatures

  • ToxicEye

    ToxicEye is a trojan written in C#.

  • Toxiceye family
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ChromeUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\ChromeUpdate.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:308
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Update\Update.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2228
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp7899.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp7899.tmp.bat
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\system32\tasklist.exe
        Tasklist /fi "PID eq 308"
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2468
      • C:\Windows\system32\find.exe
        find ":"
        3⤵
          PID:2800
        • C:\Windows\system32\timeout.exe
          Timeout /T 1 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:2856
        • C:\Users\Update\Update.exe
          "Update.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2636
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Update\Update.exe"
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2032
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 2636 -s 1636
            4⤵
              PID:1796

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp7899.tmp.bat

        Filesize

        189B

        MD5

        811dc4cf338cfce6c81922f2db108554

        SHA1

        d5e60416b9b58afce084cbd11b862a80ca97cc19

        SHA256

        817ead25ecbe502e2fdf47bd87c767391d24df003a950dec34d8b0eb3c3abbc2

        SHA512

        9c08b37863d27d12cdb8a43160b9fbd024b0a47384d106e5c4f52cc6f8a730eb4b619abe1bf1bf8235e0464b2f6f715f6ea464dfeda7064eed9675890081398b

      • C:\Users\Update\Update.exe

        Filesize

        119KB

        MD5

        eedc846c4cf322bbcf849a4af793ced5

        SHA1

        77fa1a6feb62bd77d30be181696802e13524da8d

        SHA256

        b3ccfc4ddc7f6abf0fa7606be8495acd20c23f85ab23c2fa8bfe43e84befa126

        SHA512

        6eb5963fa6d4cca6a2de25850cf47064d8ba523223a55048600fce8cadd120487507af50b0fd39c14b20bed3b976bb9510b5699efc7533e540350101c087ba2c

      • memory/308-0-0x000007FEF5E63000-0x000007FEF5E64000-memory.dmp

        Filesize

        4KB

      • memory/308-1-0x0000000000CA0000-0x0000000000CC4000-memory.dmp

        Filesize

        144KB

      • memory/308-2-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB

      • memory/308-5-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB

      • memory/2636-10-0x0000000000890000-0x00000000008B4000-memory.dmp

        Filesize

        144KB