Analysis

  • max time kernel
    90s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-03-2024 02:27

General

  • Target

    a462eb00b12df844e4d9eddee75f2d5951f73e7b37d57f8d466af3ead56208e4.exe

  • Size

    5KB

  • MD5

    cbc30f28d7e0577f32295c731f3ef064

  • SHA1

    49741bf42b24ed3979f5e7b17abb32233474637f

  • SHA256

    a462eb00b12df844e4d9eddee75f2d5951f73e7b37d57f8d466af3ead56208e4

  • SHA512

    93d124ed1c7bed8adb9f1d4a1c67c7958125556ce5fc5b8a50eea5004ae23ae53709074cca940c29a5b8a01a446a061afbab5370157ff1cc12c8875d3b1d5ccf

  • SSDEEP

    48:6GLmUs7Ug7QwJfzwv1BqqsF3YCbdjebPQPmx54tiOlX3mqF6pfbNtmm:6gg7O4o8disPll3WzNt

Malware Config

Extracted

Family

purecrypter

C2

https://qu.ax/uNsA.pdf

Signatures

  • PureCrypter

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\a462eb00b12df844e4d9eddee75f2d5951f73e7b37d57f8d466af3ead56208e4.exe
    "C:\Users\Admin\AppData\Local\Temp\a462eb00b12df844e4d9eddee75f2d5951f73e7b37d57f8d466af3ead56208e4.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4556
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4556 -s 1560
      2⤵
      • Program crash
      PID:3608
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4556 -ip 4556
    1⤵
      PID:1824

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4556-0-0x0000000000620000-0x0000000000628000-memory.dmp

      Filesize

      32KB

    • memory/4556-1-0x0000000074760000-0x0000000074F10000-memory.dmp

      Filesize

      7.7MB

    • memory/4556-2-0x0000000004F80000-0x0000000004F90000-memory.dmp

      Filesize

      64KB

    • memory/4556-3-0x0000000074760000-0x0000000074F10000-memory.dmp

      Filesize

      7.7MB

    • memory/4556-4-0x0000000004F80000-0x0000000004F90000-memory.dmp

      Filesize

      64KB

    • memory/4556-5-0x0000000074760000-0x0000000074F10000-memory.dmp

      Filesize

      7.7MB