Analysis

  • max time kernel
    72s
  • max time network
    63s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    16-02-2023 07:26

General

  • Target

    file.exe

  • Size

    23KB

  • MD5

    4a5b45207512b2f4ee3bd8cd7a25ba9e

  • SHA1

    2700be565b25a627c86adf20798e90e99958a3ea

  • SHA256

    47fb3f47c7d8d30d6bc605805e10fa9c60af5c0516b93e475c030da9144a715d

  • SHA512

    a1e26da024c534083fde7dee2846973489ceb06c536a751bde47fa74977efe5ab3762bd8f82bc427800eb43ee9e56064dcbd755d00454c2be112cdd04eb2e4ce

  • SSDEEP

    384:YbrFmwPzQHzVZJq/S8frSo62tCT+UuSvwiFawG:Ah2HzIfrS8fiFa/

Malware Config

Extracted

Family

purecrypter

C2

https://onedrive.live.com/download?cid=BD9480D014FE52E5&resid=BD9480D014FE52E5%21385&authkey=AB7WYGSbxFgcTyw

Signatures

  • PureCrypter

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

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1332
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 1824
      2⤵
      • Program crash
      PID:1912

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1332-54-0x00000000010B0000-0x00000000010BC000-memory.dmp

    Filesize

    48KB

  • memory/1332-55-0x0000000074ED1000-0x0000000074ED3000-memory.dmp

    Filesize

    8KB