Analysis

  • max time kernel
    25s
  • max time network
    28s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-11-2024 07:41

Errors

Reason
Machine shutdown

General

  • Target

    154080c5844ed76332320fcf3f1773391d80200f18f9025fd05b55b86f8ff795.msi

  • Size

    309KB

  • MD5

    495a4543965b4a92c6314294b338602f

  • SHA1

    a520425e51ae8211ddc85566111d204282e493df

  • SHA256

    154080c5844ed76332320fcf3f1773391d80200f18f9025fd05b55b86f8ff795

  • SHA512

    ddba1d22bb8cf1f4a0bc5dbc8c19087b908370d464b1a64683d69f5553a8da99650fe0ea0d88f5cfab14a37a0bfa5fdf0a9435d05a368efb40cb16c2ac4c9efb

  • SSDEEP

    3072:BSLkCN9BN23DnYjATwgz88ereWn/7w05g0l6dvcv:BSQn3DnYjAS8er1nzT6dvcv

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 9 IoCs
  • Loads dropped DLL 2 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\154080c5844ed76332320fcf3f1773391d80200f18f9025fd05b55b86f8ff795.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4416
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4220
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 14F382720ED40D7AB19AC0A74C8B6F4E
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:400
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C start /MIN reg add HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "Admin71Csd©" /t reg_sz /d "\"C:\Admin71Csd©\hEB71©.exe\"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3872
        • C:\Windows\SysWOW64\reg.exe
          reg add HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "Admin71Csd©" /t reg_sz /d "\"C:\Admin71Csd©\hEB71©.exe\"
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:1152
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C start /MIN shutdown -r -f -t 20 -c "Windows atualizado com sucesso,o computador será reiniciado,para aplicar as atualizações instaladas..."
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:220
        • C:\Windows\SysWOW64\shutdown.exe
          shutdown -r -f -t 20 -c "Windows atualizado com sucesso,o computador será reiniciado,para aplicar as atualizações instaladas..."
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:4852
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa39b6055 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\e57a328.rbs

    Filesize

    934B

    MD5

    b4ddfa1a86dd15eb19d310bfa7555d65

    SHA1

    ff3126f4be47acf690f6eff5156bef0c1abbb9d3

    SHA256

    1d002209187789e378b1327aca1d5a68a10335c3f637c130c374fd75c297fdf2

    SHA512

    1ed507087a487f3e4d2f0c54b2713cff1a9c925019a4a8e1f3f9522e7cf34ea6b847892581b9842bebfcbcde13581e9e404041719aa03eeb07acc3033e8d0ed0

  • C:\Windows\Installer\MSIA383.tmp

    Filesize

    91KB

    MD5

    9f1e5d66c2889018daef4aef604eebc4

    SHA1

    b80294261c8a1635e16e14f55a3d76889ff2c857

    SHA256

    02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

    SHA512

    8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b