Analysis

  • max time kernel
    124s
  • max time network
    130s
  • 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, 23:35

General

  • Target

    f359b2d460aa1481b4b2e2bab2fa6c154660c9bae7a47dbc383a87625fce4c71.exe

  • Size

    1.6MB

  • MD5

    e8b5da99b95f7f07f71794b3901bdb87

  • SHA1

    ac665d485ab0209c99c3f00fe657efbd5cf1345f

  • SHA256

    f359b2d460aa1481b4b2e2bab2fa6c154660c9bae7a47dbc383a87625fce4c71

  • SHA512

    56b0912f9d676c76ec8f043e8e3fb29b7c19bd03341a6fc99191ee71e53434116b0185ded6b71b03e69c29caf0039f52cdd6df847793a5c82b7eae90149b592a

  • 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\f359b2d460aa1481b4b2e2bab2fa6c154660c9bae7a47dbc383a87625fce4c71.exe
    "C:\Users\Admin\AppData\Local\Temp\f359b2d460aa1481b4b2e2bab2fa6c154660c9bae7a47dbc383a87625fce4c71.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:5112
    • 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:5004
    • 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:692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 1664
      2⤵
      • Program crash
      PID:4132
  • \??\c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
    1⤵
      PID:4404
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:3396

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              e8b5da99b95f7f07f71794b3901bdb87

              SHA1

              ac665d485ab0209c99c3f00fe657efbd5cf1345f

              SHA256

              f359b2d460aa1481b4b2e2bab2fa6c154660c9bae7a47dbc383a87625fce4c71

              SHA512

              56b0912f9d676c76ec8f043e8e3fb29b7c19bd03341a6fc99191ee71e53434116b0185ded6b71b03e69c29caf0039f52cdd6df847793a5c82b7eae90149b592a

            • C:\Users\Admin\AppData\Local\Temp\grandUIAwKTUGDsKb82Vf\information.txt

              Filesize

              3KB

              MD5

              29f64ee4c6ef1cf1086ddcac858135ca

              SHA1

              28affccf2b34357b45b92d13f0fb5acfb22e4b99

              SHA256

              f9229ea84805ea652cf6af27663b98501819e9db24d1aaad8640a57853d4656f

              SHA512

              5bf5672640748b4e4f5307a746101f684df9e179d905bccafb3eee73694797abd1ad118d9836b5761391a9bb45c9e1388319987888cc7706bcec9ee6248153c0

            • C:\Users\Admin\AppData\Local\Temp\posterBoxwKTUGDsKb82Vf\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              90a4e3db168e5bdc6b5e562ce7f41a06

              SHA1

              2bf235c33b3395caefc1b9f1a280f83422f94d40

              SHA256

              fdd37b06f981e619d6690edeaa17ba8d86c66cec9331632f3d9922bb2c6eabf5

              SHA512

              e30f0a67bbdc6507ac5babaa5fe1e0db7cde6b62812f6365fe83293e5fbba3f62db43c80c635a43b3b0ffb2e08ac2faf79eff0d3bea8e2aaaca6c55fb0833c0b