Analysis

  • max time kernel
    93s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-03-2024 07:59

General

  • Target

    5139e24e3fa4d06a143dd7d297a44ee7_JaffaCakes118.exe

  • Size

    76KB

  • MD5

    5139e24e3fa4d06a143dd7d297a44ee7

  • SHA1

    2ee7f89720c68680db7e0b96b30069ed1bed913a

  • SHA256

    f5a980b01f25dea8e566dff4cc9750bdd5ea67e76c6d02fe490d7366039c9f92

  • SHA512

    89358f28afa42de62c7519d6427d71481a9acafba58e665ea199e0f41fe4fa507028d316070b9317d74005b408f2e965261347755854ec7d1a1607606af445b6

  • SSDEEP

    768:1gktFPr7fIULFMBc237bobA7ymRd0uxUDTJL6oNsgBvAyox0cj:1pxr7fIULFMAAiu6JL6oNsgFAyox0cj

Malware Config

Extracted

Family

purecrypter

C2

https://store2.gofile.io/download/6d09093e-3140-4f91-86bc-50e2ec5aba70/Spxetbpourfw.dll

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\5139e24e3fa4d06a143dd7d297a44ee7_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5139e24e3fa4d06a143dd7d297a44ee7_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4464
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4464 -s 1776
      2⤵
      • Program crash
      PID:2552
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4464 -ip 4464
    1⤵
      PID:1304

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4464-1-0x0000000074A00000-0x00000000751B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4464-0-0x0000000000450000-0x0000000000468000-memory.dmp

      Filesize

      96KB

    • memory/4464-2-0x0000000004E30000-0x0000000004E40000-memory.dmp

      Filesize

      64KB

    • memory/4464-3-0x0000000074A00000-0x00000000751B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4464-4-0x0000000074A00000-0x00000000751B0000-memory.dmp

      Filesize

      7.7MB