Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-07-2023 07:03

General

  • Target

    Clientexe.exe

  • Size

    335KB

  • MD5

    17783c63b34cb560cee2219a5a718511

  • SHA1

    0653a57e59b4bbb9735d0c2f320bcf79c414ba82

  • SHA256

    0cfe0c50487f6d372e650d4171b51dae5a085de9d604a6701c5ebec442268b5b

  • SHA512

    4a95b7972343d13bdb5ef1ed2f9d5cad3725fbdcb2aefe44987a4eb5ffa49c76fa07b73c6cc205ca7d73c39f50dbb59a9c337b82c69bee25051f836c55061a59

  • SSDEEP

    6144:lW8ABhSQBJd85Cnz4ny1+J6HRw2bLnZRo4G8u3i43FHm7p1:A8qdd85CnWycJ6HhTQ3M

Malware Config

Extracted

Family

purecrypter

C2

https://janiking.xyz/loader/uploads/Whotdf_Kzhgekln.png

Signatures

  • PureCrypter

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Clientexe.exe
    "C:\Users\Admin\AppData\Local\Temp\Clientexe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Users\Admin\AppData\Local\Temp\Clientexe.exe
      "C:\Users\Admin\AppData\Local\Temp\Clientexe.exe"
      2⤵
        PID:3708
      • C:\Users\Admin\AppData\Local\Temp\Clientexe.exe
        "C:\Users\Admin\AppData\Local\Temp\Clientexe.exe"
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3844

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3844-134-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

    • memory/3844-136-0x0000000005660000-0x0000000005670000-memory.dmp

      Filesize

      64KB

    • memory/3844-137-0x0000000005660000-0x0000000005670000-memory.dmp

      Filesize

      64KB

    • memory/4364-133-0x0000000000F70000-0x0000000000FC8000-memory.dmp

      Filesize

      352KB