Resubmissions

02/03/2024, 22:38

240302-2kwptaae37 10

02/03/2024, 22:34

240302-2g86qsad96 10

Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/03/2024, 22:34

General

  • Target

    Fake AV/Antivirus.exe

  • Size

    2.0MB

  • MD5

    c7e9746b1b039b8bd1106bca3038c38f

  • SHA1

    cb93ac887876bafe39c5f9aa64970d5e747fb191

  • SHA256

    b1369bd254d96f7966047ad4be06103830136629590182d49e5cb8680529ebd4

  • SHA512

    cf5d688f1aec8ec65c1cb91d367da9a96911640c695d5c2d023836ef11e374ff158c152b4b6207e8fcdb5ccf0eed79741e080f1cbc915fe0af3dacd624525724

  • SSDEEP

    49152:FH/1Fdq0wneDrEoYxWFjmYMcKabLVp3diY7kp:FH/1Fdq0nIo2YAcl/NisA

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 System32 directory 7 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 use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 27 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 use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3104
    • C:\Windows\SysWOW64\net.exe
      net stop wscsvc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1056
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop wscsvc
        3⤵
          PID:2120
      • C:\Windows\SysWOW64\net.exe
        net stop winmgmt /y
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4480
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop winmgmt /y
          3⤵
            PID:4832
        • C:\Windows\SysWOW64\net.exe
          net start winmgmt
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4800
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start winmgmt
            3⤵
              PID:764
          • C:\Windows\SysWOW64\net.exe
            net start wscsvc
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1032
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start wscsvc
              3⤵
                PID:4984
            • C:\Windows\SysWOW64\Wbem\mofcomp.exe
              mofcomp C:\Users\Admin\AppData\Local\Temp\4otjesjty.mof
              2⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:876
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
            1⤵
            • Drops file in System32 directory
            • Suspicious use of AdjustPrivilegeToken
            PID:4384

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\Users\Admin\AppData\Local\Temp\4otjesjty.mof

                  Filesize

                  443B

                  MD5

                  7fad92afda308dca8acfc6ff45c80c24

                  SHA1

                  a7fa35e7f90f772fc943c2e940737a48b654c295

                  SHA256

                  76e19416eb826a27bdcf626c3877cf7812bbe9b62cc2ccc5c2f65461d644246f

                  SHA512

                  49eed1e1197401cb856064bf7fdbd9f3bc57f3c864d47f509346d44eed3b54757d8c6cdb6254990d21291065f0762d2a1588d09e43c5728f77a420f6a8dcd6ea