Analysis

  • max time kernel
    147s
  • max time network
    149s
  • 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, 23:23

General

  • Target

    3de96ce36b4a7a60a9f78933264c8691a1679b84f32b1d6658a84775a3412a51.exe

  • Size

    1.6MB

  • MD5

    f63acc9a5868a5a3d47ce6f541f1e12a

  • SHA1

    100c7f0a2d44b5e77a6be30f11afc0815e7c8a23

  • SHA256

    3de96ce36b4a7a60a9f78933264c8691a1679b84f32b1d6658a84775a3412a51

  • SHA512

    0d5a4aaac03e13db7edd116777f84369ccc57edfa90b250c6e20b6d9123d322f7dae0b4781dc7cca3982f330296b5121809b14208abe2c201ca1a6bc2b98ae57

  • 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\3de96ce36b4a7a60a9f78933264c8691a1679b84f32b1d6658a84775a3412a51.exe
    "C:\Users\Admin\AppData\Local\Temp\3de96ce36b4a7a60a9f78933264c8691a1679b84f32b1d6658a84775a3412a51.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:952
    • 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:3872
    • 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:3124
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 1592
      2⤵
      • Program crash
      PID:4900
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:2284
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:4252

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              f63acc9a5868a5a3d47ce6f541f1e12a

              SHA1

              100c7f0a2d44b5e77a6be30f11afc0815e7c8a23

              SHA256

              3de96ce36b4a7a60a9f78933264c8691a1679b84f32b1d6658a84775a3412a51

              SHA512

              0d5a4aaac03e13db7edd116777f84369ccc57edfa90b250c6e20b6d9123d322f7dae0b4781dc7cca3982f330296b5121809b14208abe2c201ca1a6bc2b98ae57

            • C:\Users\Admin\AppData\Local\Temp\grandUIAsxkCb1b0tuW53\information.txt

              Filesize

              3KB

              MD5

              f5a4c5ebdbee6ce5e87d17cdc3dd2fe7

              SHA1

              a8a9b2f819856a9d900672332ced43eb3726ee6f

              SHA256

              e654db4e267b20e5f29726d5f3d8bfd18ea2d2aeb99471620997426ccba39411

              SHA512

              8d3a7dbb6416665f4cb923187de319da2ecd7bf807d8bda08acdf701c46e9b89b10b6f4aa12a09d3dd88fd626ac44ea2f5ea42b26c69bc18761e1aeadd5ca095

            • C:\Users\Admin\AppData\Local\Temp\posterBoxsxkCb1b0tuW53\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              d540e45d4e0edb6aab5ed14cc52f1fa5

              SHA1

              0c9279b204416dfa86ee22993bd3325b5bc762b1

              SHA256

              ddd7cbb13ec9dca8859d1a0f54d3f326c0097a8d2809636d96d2e4d9cfa86153

              SHA512

              3dc3b50b4948f522f4746a0ef63cdc40995dad3a3ac901b277a37296a33eee2977121f7aa529d9ef7f0cb878c6e15fac6c5570f1e5f73e73b5379633bd0caf9f