Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01-02-2023 13:13

General

  • Target

    file.exe

  • Size

    2.7MB

  • MD5

    79f47ea1ffef2cbc356aaa87610d9168

  • SHA1

    3dfa9f0128fbcb080f2dd22ccd5917d2d57d06be

  • SHA256

    3d9599c4660790e2a9ec335ff9384efb10443eae67d22925697fd30d48f87414

  • SHA512

    4330bc516693b647da60de7e109d811321e98164362ca495bd0f4402c3f42f7eb1fb265cdae685655b51ef837909c895281587ab4f9af987e9550ab495433cb6

  • SSDEEP

    49152:X3VxHbk7Rv6msAP/RpWY23Y7MrKSmSejpe:Hbr/O/BO+SV

Malware Config

Signatures

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:940
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      C:\Users\Admin\AppData\Local\Temp\file.exe
      2⤵
        PID:1020
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        C:\Users\Admin\AppData\Local\Temp\file.exe
        2⤵
          PID:320
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          C:\Users\Admin\AppData\Local\Temp\file.exe
          2⤵
            PID:972
          • C:\Users\Admin\AppData\Local\Temp\file.exe
            C:\Users\Admin\AppData\Local\Temp\file.exe
            2⤵
              PID:656
            • C:\Users\Admin\AppData\Local\Temp\file.exe
              C:\Users\Admin\AppData\Local\Temp\file.exe
              2⤵
                PID:1892
              • C:\Users\Admin\AppData\Local\Temp\file.exe
                C:\Users\Admin\AppData\Local\Temp\file.exe
                2⤵
                  PID:1872
                • C:\Users\Admin\AppData\Local\Temp\file.exe
                  C:\Users\Admin\AppData\Local\Temp\file.exe
                  2⤵
                    PID:1120
                  • C:\Users\Admin\AppData\Local\Temp\file.exe
                    C:\Users\Admin\AppData\Local\Temp\file.exe
                    2⤵
                      PID:1496
                    • C:\Users\Admin\AppData\Local\Temp\file.exe
                      C:\Users\Admin\AppData\Local\Temp\file.exe
                      2⤵
                        PID:1712
                      • C:\Users\Admin\AppData\Local\Temp\file.exe
                        C:\Users\Admin\AppData\Local\Temp\file.exe
                        2⤵
                          PID:632

                      Network

                      MITRE ATT&CK Matrix ATT&CK v6

                      Discovery

                      System Information Discovery

                      1
                      T1082

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • memory/752-54-0x0000000000340000-0x00000000005F8000-memory.dmp
                        Filesize

                        2.7MB

                      • memory/752-55-0x0000000004A00000-0x0000000004CA6000-memory.dmp
                        Filesize

                        2.6MB

                      • memory/752-56-0x0000000075D01000-0x0000000075D03000-memory.dmp
                        Filesize

                        8KB

                      • memory/752-62-0x00000000050E0000-0x0000000005160000-memory.dmp
                        Filesize

                        512KB

                      • memory/940-57-0x0000000000000000-mapping.dmp
                      • memory/940-59-0x000000006FD20000-0x00000000702CB000-memory.dmp
                        Filesize

                        5.7MB

                      • memory/940-60-0x000000006FD20000-0x00000000702CB000-memory.dmp
                        Filesize

                        5.7MB

                      • memory/940-61-0x000000006FD20000-0x00000000702CB000-memory.dmp
                        Filesize

                        5.7MB