Resubmissions

02/03/2024, 22:38

240302-2kwptaae3710

02/03/2024, 22:34

240302-2g86qsad9610

Analysis

  • max time kernel
    1801s
  • max time network
    1770s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2024, 22:38

General

  • Target
    Fake AV/Antivirus.exe
  • Size 2.0MB
  • Sample240302-2kwptaae37
  • SHA256 b1369bd254d96f7966047ad4be06103830136629590182d49e5cb8680529ebd4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fake AV\Antivirus.exe
    "C:\Users\Admin\AppData\Local\Temp\Fake AV\Antivirus.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1944
    • C:\Windows\SysWOW64\net.exe
      net stop wscsvc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2572
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop wscsvc
        3⤵
          PID:2584
      • C:\Windows\SysWOW64\net.exe
        net stop winmgmt /y
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2664
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop winmgmt /y
          3⤵
            PID:2908
        • C:\Windows\SysWOW64\net.exe
          net start winmgmt
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2624
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start winmgmt
            3⤵
              PID:2440
          • C:\Windows\SysWOW64\net.exe
            net start wscsvc
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2600
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start wscsvc
              3⤵
                PID:2532
            • C:\Windows\SysWOW64\Wbem\mofcomp.exe
              mofcomp C:\Users\Admin\AppData\Local\Temp\4otjesjty.mof
              2⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2948

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                4otjesjty.mof

                • Path C:\Users\Admin\AppData\Local\Temp\4otjesjty.mof
                • Size 443B
                • SHA256 76e19416eb826a27bdcf626c3877cf7812bbe9b62cc2ccc5c2f65461d644246f
                • MD5 SHA1 SHA512