Analysis

  • max time kernel
    131s
  • max time network
    142s
  • platform
    windows10-1703_x64
  • resource
    win10-20231129-en
  • resource tags

    arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/12/2023, 21:35

General

  • Target

    351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe

  • Size

    1.6MB

  • MD5

    bfac31b87f82e4505f1f1966bafa4e23

  • SHA1

    fc85c8c2801ff6d5d2373ff2b2080c87ef6f6c68

  • SHA256

    351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd

  • SHA512

    f7693e898c97a88125ca3295d8eee22ab5319827eff3322e4f6ecc82b9fbfd26e5c24112077d067391034fbce181006f11f635d0bb079d43402013388bdf5f05

  • SSDEEP

    49152:80ceOGgUYYEmluRKYoFh4kGWusbQnIyDi1E1uonTKi/OjCCNG:1XOGgUYC4RKXFhrusbaDkE1u

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\351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe
    "C:\Users\Admin\AppData\Local\Temp\351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.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:1416
    • 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:2856
    • 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:1056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1416 -s 1568
      2⤵
      • Program crash
      PID:4912
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:2400
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:2368

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              bfac31b87f82e4505f1f1966bafa4e23

              SHA1

              fc85c8c2801ff6d5d2373ff2b2080c87ef6f6c68

              SHA256

              351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd

              SHA512

              f7693e898c97a88125ca3295d8eee22ab5319827eff3322e4f6ecc82b9fbfd26e5c24112077d067391034fbce181006f11f635d0bb079d43402013388bdf5f05

            • C:\Users\Admin\AppData\Local\Temp\grandUIANru9NqXR73ea_\information.txt

              Filesize

              3KB

              MD5

              4508521c5ad7146fcc561c4cb3822b1d

              SHA1

              98375746192e149524fd78d03f48a901122e2bf9

              SHA256

              afdb8c0161150c9c570ae1265ecaaf853217d31647cf337a88e5ccf85d48ce9b

              SHA512

              799bfd561a228a847d8ffb3eb4b9451f7dd87f1e68e4f27988c477d065d3b482dd7ac6838a8fc5ebc20e7deda91e1d3f288dec09b55c10babcc357184a28ea8a

            • C:\Users\Admin\AppData\Local\Temp\posterBoxNru9NqXR73ea_\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              982861d9583057c9107636f512d24c82

              SHA1

              b8f0f8e9d07dc653f587912d1aba91bfd8cd9bab

              SHA256

              49bcb23ce630b736c6ff8a08cc8929ac5c1168fd367c9ddfa79c1939efed95d5

              SHA512

              31f616df72551dc1b5732692efd746ec336fb0dfe38dd3a7a2f08c46abb8b6757d9542889f63f63698317a50fc0de65aa0d29cc9ac0115c59486ed7a163c3539