Analysis

  • max time kernel
    127s
  • max time network
    133s
  • platform
    windows10-1703_x64
  • resource
    win10-20231023-en
  • resource tags

    arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/12/2023, 23:02

General

  • Target
    15e7d4de4f9eb17953d673407c6feca9df0852fb9baea17307a24bb0822d6b62.exe
  • Size 1.6MB
  • Sample231213-21f93aaaam
  • SHA256 15e7d4de4f9eb17953d673407c6feca9df0852fb9baea17307a24bb0822d6b62
  • MD5 SHA1 SHA512 SSDEEP

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\15e7d4de4f9eb17953d673407c6feca9df0852fb9baea17307a24bb0822d6b62.exe
    "C:\Users\Admin\AppData\Local\Temp\15e7d4de4f9eb17953d673407c6feca9df0852fb9baea17307a24bb0822d6b62.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:4492
    • 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:96
    • 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:2992
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4492 -s 1708
      2⤵
      • Program crash
      PID:5060
  • \??\c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
    1⤵
      PID:3712
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:3320

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            OfficeTrackerNMP131.exe

            • Path C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe
            • Size 1.6MB
            • SHA256 15e7d4de4f9eb17953d673407c6feca9df0852fb9baea17307a24bb0822d6b62
            • MD5 SHA1 SHA512 SSDEEP

            information.txt

            • Path C:\Users\Admin\AppData\Local\Temp\grandUIATIfNl8GSaP1Gc\information.txt
            • Size 3KB
            • SHA256 7ec8f7e5afdb24e7cda7c7b374dc720b2c2933f81f69b19594cb0905d724df9d
            • MD5 SHA1 SHA512

            QdX9ITDLyCRBWeb Data

            • Path C:\Users\Admin\AppData\Local\Temp\posterBoxTIfNl8GSaP1Gc\QdX9ITDLyCRBWeb Data
            • Size 92KB
            • SHA256 6d9706346ebea4d1cdb447635404e8a662bc2f40bc6d829b45d50aeedeeaffaa
            • MD5 SHA1 SHA512 SSDEEP