Analysis

  • max time kernel
    131s
  • max time network
    141s
  • platform
    windows10-1703_x64
  • resource
    win10-20231129-en
  • resource tags

    arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system
  • submitted
    14/12/2023, 00:11

General

  • Target

    4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe

  • Size

    1.6MB

  • MD5

    e94dce896b9504ef6a54fb33528bb923

  • SHA1

    f99b8a14c147c1dd5f5ab763132b3f8926d2cb64

  • SHA256

    4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e

  • SHA512

    8926a9539b0d4b4b38c5c19e0eb2595cf15c5a954859a601dce936f50c768c736fb50d90fe9fbc741bd3b0601cce72c2a72aec160d6338b345b5e280e4b1e282

  • 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\4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe
    "C:\Users\Admin\AppData\Local\Temp\4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.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:4248
    • 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:3064
    • 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:2696
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 1608
      2⤵
      • Program crash
      PID:1284
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:1540
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:4788

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              e94dce896b9504ef6a54fb33528bb923

              SHA1

              f99b8a14c147c1dd5f5ab763132b3f8926d2cb64

              SHA256

              4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e

              SHA512

              8926a9539b0d4b4b38c5c19e0eb2595cf15c5a954859a601dce936f50c768c736fb50d90fe9fbc741bd3b0601cce72c2a72aec160d6338b345b5e280e4b1e282

            • C:\Users\Admin\AppData\Local\Temp\grandUIACUk7Y3sL8N9UN\information.txt

              Filesize

              3KB

              MD5

              4da4599220a2a301a9a8bdbabe0d7887

              SHA1

              a5334cef53909f703cc6ea9d0f8a6956f395d82e

              SHA256

              be07cc1d199c2d04cf74cf798b720126a61cec8c4f54de27d8b547deb5e3b910

              SHA512

              a52154ea1fc460d3a816ac288bc661015e750770068a9d7cc3a049c93802987148bf103ce1f7da940581161173e47f62467806a323cbb4ae1786d4ced86378f3

            • C:\Users\Admin\AppData\Local\Temp\posterBoxCUk7Y3sL8N9UN\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              8e8e7137325b5aa4e1206f338a7ccde7

              SHA1

              23a2d46d2812f664d8fff942d493e85afe5f6a27

              SHA256

              bbbd94e3e65b0cf446d3f651f1a557e479c2adc8c0c955a18addd89fcd7ffe25

              SHA512

              1512bc6ad27b5b794d44b2599ace04a325b32726a1c96e2f8a6f75d55c494e65a4cdd1ea241027d693cd54dc049ad4a23b2147bb1a49450b7949cc71dba06233