Analysis

  • max time kernel
    140s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-07-2023 02:12

General

  • Target

    Payment_Confirmation_230721pdf.exe

  • Size

    53KB

  • MD5

    4feef1aae6a0fec7806c2c0fbbee297e

  • SHA1

    2be923d8dc05abe584621a4bff5c9178cf43777a

  • SHA256

    e03f7cbee9ba8443d200f1bcc47101185dcdc27b965b0ce9b650a0aae4c40492

  • SHA512

    44c8d14b4543909e5f1451f25330f8d7a9679d12b2eaefab2c21dd8cf1d41491d1e41b00230a4cf36b5be63ba1b9721ce8c4ee07d0f802b5c284c6c655661a31

  • SSDEEP

    768:qgyiRquYaRH/+MSlKphRUsSnDK3EaC8l2bP3SScNY8nfRqTuM+1+S:q1iRTYqNuKZUsgDK3EaqL36G8ETugS

Malware Config

Extracted

Family

purecrypter

C2

https://files.catbox.moe/730d8u.wav

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\Payment_Confirmation_230721pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation_230721pdf.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:556
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 1940
      2⤵
      • Program crash
      PID:2820
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 556 -ip 556
    1⤵
      PID:4480

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/556-133-0x0000000000F70000-0x0000000000F84000-memory.dmp

      Filesize

      80KB

    • memory/556-134-0x0000000074740000-0x0000000074EF0000-memory.dmp

      Filesize

      7.7MB

    • memory/556-135-0x00000000031A0000-0x00000000031B0000-memory.dmp

      Filesize

      64KB

    • memory/556-136-0x0000000074740000-0x0000000074EF0000-memory.dmp

      Filesize

      7.7MB