Analysis

  • max time kernel
    144s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/12/2023, 12:31

General

  • Target

    good.exe

  • Size

    1.6MB

  • MD5

    81e30f580f1a0b6d719c84658469179d

  • SHA1

    125c7c16efadafcb7e8c9374c4b034f8714f5da1

  • SHA256

    9596077ce994b0a259cad7d45f7c848a763d913ae2fb3e86c21ec4b15b1255e5

  • SHA512

    2d02bfe821a7e7b03f91ba53b9874f2420bcf237ae14d97b77753c30e74979286b0a3ca431724f5746462000c9fd6756da24937b52ef9ef2d8efe80d2dd33770

  • SSDEEP

    49152:qWg8wUmZOzqiavjDUJO/WH89ctcO0ljbbQnIQGotBKqy8TJCHEGU42sn6:ZiUmZOzqiavjDUM/WH89y8bboGO

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\good.exe
    "C:\Users\Admin\AppData\Local\Temp\good.exe"
    1⤵
    • Drops startup file
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Drops file in System32 directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:3768
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:5072
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:3632
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3768 -s 1804
      2⤵
      • Program crash
      PID:2680
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4692
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:4552
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3768 -ip 3768
        1⤵
          PID:3576

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

          Filesize

          1.6MB

          MD5

          81e30f580f1a0b6d719c84658469179d

          SHA1

          125c7c16efadafcb7e8c9374c4b034f8714f5da1

          SHA256

          9596077ce994b0a259cad7d45f7c848a763d913ae2fb3e86c21ec4b15b1255e5

          SHA512

          2d02bfe821a7e7b03f91ba53b9874f2420bcf237ae14d97b77753c30e74979286b0a3ca431724f5746462000c9fd6756da24937b52ef9ef2d8efe80d2dd33770

        • C:\Users\Admin\AppData\Local\Temp\grandUIAJQsaFvfDRTMQ8\information.txt

          Filesize

          3KB

          MD5

          162e94c32e0a34a9f9ec199d7fbadb4c

          SHA1

          37c3311d85dcdb203d68400987419cc9e4e2c0be

          SHA256

          19e84cb2aa9ce833e485e62024104d3c94b4adb12f7ac81ecf40e99549857080

          SHA512

          3cd0e7031c6c213a714c1ea57332335cd9a7177d4b25d6987f677979bf97ebb0bbae4e62d801d8a0e9f7bec921370474c86523c8cb2b4651f7af23f53b206cd2