Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-02-2024 21:49

General

  • Target

    99feac4390f343575c9a059e6a525144.exe

  • Size

    24KB

  • MD5

    99feac4390f343575c9a059e6a525144

  • SHA1

    78bce32ad31ef286e2708b8fdde60ce2f8a4415f

  • SHA256

    05467cf1f1dd603934730a2529d31dc112c2a2f2b8508ec2b98c903ec895a1d6

  • SHA512

    2a02f29c6a6f1770ae087497a56bedd1a6a2247d26de33a28f9075c90cfd276802afffee8edf2267d6680826970ea93484a9af6bd79265c86c0198a598acbd4b

  • SSDEEP

    384:E3eVES+/xwGkRKJYklM61qmTTMVF9/q5F0:bGS+ZfbJYkO8qYoAK

Score
6/10

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99feac4390f343575c9a059e6a525144.exe
    "C:\Users\Admin\AppData\Local\Temp\99feac4390f343575c9a059e6a525144.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:892
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2384
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c set
        3⤵
          PID:4604
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          3⤵
          • Gathers network information
          PID:3228
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:3008
        • C:\Windows\SysWOW64\net.exe
          net start
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3244
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start
            4⤵
              PID:4296
          • C:\Windows\SysWOW64\NETSTAT.EXE
            netstat -an
            3⤵
            • Gathers network information
            • Suspicious use of AdjustPrivilegeToken
            PID:2668

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • \??\c:\windows\temp\flash.log

        Filesize

        13KB

        MD5

        861b308a9322c47e17f2857696d5e740

        SHA1

        4298391ed4ddf76e8711f169ebc69de15e1b5b13

        SHA256

        ecd7d239cfdf21686ba1e2ee4be5b031ca1a8f3807b41fcb6c39bd524202adbf

        SHA512

        37d87bccb632fdc82286563d2ed3bfe0ebdacc30a6abc18de01c7263f7956755f373989ad20acbc4d30a20da738b43d540292894772c9d6c8fd67d9800266edc