Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 21:39

General

  • Target

    8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe

  • Size

    1.6MB

  • MD5

    cbb0b9dd19e5913079cd699250b66b00

  • SHA1

    e98599cad9443bf9f1b93ff976799568d440ada3

  • SHA256

    8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af

  • SHA512

    8d75a56ee2397c1485d066057fd975c48a6807b91b85db411f5dc013e4f106df63e93cdf033da98e59bd089750b0aab926dbd41cd0bbdcbcdf9d6411620b450e

  • 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\8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe
    "C:\Users\Admin\AppData\Local\Temp\8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.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:3536
    • 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:4056
    • 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:5000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 1668
      2⤵
      • Program crash
      PID:4500
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:5116
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:3724
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3536 -ip 3536
        1⤵
          PID:2080

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                cbb0b9dd19e5913079cd699250b66b00

                SHA1

                e98599cad9443bf9f1b93ff976799568d440ada3

                SHA256

                8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af

                SHA512

                8d75a56ee2397c1485d066057fd975c48a6807b91b85db411f5dc013e4f106df63e93cdf033da98e59bd089750b0aab926dbd41cd0bbdcbcdf9d6411620b450e

              • C:\Users\Admin\AppData\Local\Temp\grandUIA2SEsERBj9Cw3X\information.txt

                Filesize

                3KB

                MD5

                0f89daaa51d50acf103338caba631eee

                SHA1

                ebca1f3038c64d32138515678103c93abc0595af

                SHA256

                97faed85525489b4ab4951a70b828e83a7bb6b346efa83af513434ba53c3dbca

                SHA512

                3ec19f78ecca0948d8769c06cf76bd00a3cfbc76739723bf590e6026b2063661753cebe7ca90e9437ca66acf86c31943391404706d498893a701b6ae0e0c4d1c

              • C:\Users\Admin\AppData\Local\Temp\posterBox2SEsERBj9Cw3X\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                44de9f4a837691e623c12425421c22d1

                SHA1

                5229b2b16468353e9ae72ae2d97840448b055e55

                SHA256

                683050f55ee81e6cdd868cad8df884f327f903bca54f06f19e24d196d514fcae

                SHA512

                5f15e672310ef2f67e7517e4b23d3d1500fe18c4e53785ed8191d0b74139ccb2142e5b7495ec966e207fd46ead84bbd929d2d169b71d9477fbac4b383b0b55c5

              • C:\Users\Admin\AppData\Local\Temp\posterBox2SEsERBj9Cw3X\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84