Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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, 21:40

General

  • Target

    c079139a3d67042d01965a5a8cc1ad8bc53eaaec8457745c807c383ce654f06c.exe

  • Size

    1.6MB

  • MD5

    ebf85ce98e1e3cd174dc0b9364924127

  • SHA1

    5ad8441e71c453ecc272ddd350f336d5de2edf99

  • SHA256

    c079139a3d67042d01965a5a8cc1ad8bc53eaaec8457745c807c383ce654f06c

  • SHA512

    e4ea1ece6e6501c582baee273d29cef6b6a7aeab5f5682c351f8cec6c8d8fc4ecec2cd9d8af03e9d3e636e0319b188a0f83a6bb467fd4859afcbccb753485a88

  • 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\c079139a3d67042d01965a5a8cc1ad8bc53eaaec8457745c807c383ce654f06c.exe
    "C:\Users\Admin\AppData\Local\Temp\c079139a3d67042d01965a5a8cc1ad8bc53eaaec8457745c807c383ce654f06c.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:4208
    • 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:3624
    • 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:788
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4208 -s 1512
      2⤵
      • Program crash
      PID:3764
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4572
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:860

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              ebf85ce98e1e3cd174dc0b9364924127

              SHA1

              5ad8441e71c453ecc272ddd350f336d5de2edf99

              SHA256

              c079139a3d67042d01965a5a8cc1ad8bc53eaaec8457745c807c383ce654f06c

              SHA512

              e4ea1ece6e6501c582baee273d29cef6b6a7aeab5f5682c351f8cec6c8d8fc4ecec2cd9d8af03e9d3e636e0319b188a0f83a6bb467fd4859afcbccb753485a88

            • C:\Users\Admin\AppData\Local\Temp\grandUIAKYXWJI2Uq8EWe\information.txt

              Filesize

              3KB

              MD5

              6bf2104b9087f7bd525fac26ae7ef58f

              SHA1

              29207882c06acab8e1c7c14d0f8bf60d842ce479

              SHA256

              129caa0400758821862cfa6687a4efd50d8036facb2ebdce31e9c993a79a8b53

              SHA512

              4f81fc6e7f491e1fb0442e471420031b3940439f598b3ff34d1328841741d1abb35314f6bce944a91251cef84c7988d0501ea0ff70d4abf800cc61d00707c678

            • C:\Users\Admin\AppData\Local\Temp\posterBoxKYXWJI2Uq8EWe\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              982861d9583057c9107636f512d24c82

              SHA1

              b8f0f8e9d07dc653f587912d1aba91bfd8cd9bab

              SHA256

              49bcb23ce630b736c6ff8a08cc8929ac5c1168fd367c9ddfa79c1939efed95d5

              SHA512

              31f616df72551dc1b5732692efd746ec336fb0dfe38dd3a7a2f08c46abb8b6757d9542889f63f63698317a50fc0de65aa0d29cc9ac0115c59486ed7a163c3539