Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-04-2024 14:23

General

  • Target

    737732b33bdfa729010c81fba507c59e_JaffaCakes118.exe

  • Size

    76KB

  • MD5

    737732b33bdfa729010c81fba507c59e

  • SHA1

    a4fe38b55f7ea8618ced754eedbfdfee9b7da5a6

  • SHA256

    e01b0ac8411fc377c317ed6aabf5656b400c17bbb4a61b55204ea335bbe2f0ce

  • SHA512

    c699c29e68290d0ae6c3a4f392ccb73e29ef00b8808e643a7ca90cbcccd91afa8916c576aba7a48ca79d316bebc332b37f6748ad89b92ef50bab6b93c34be1f9

  • SSDEEP

    768:SYuJsFWIULFMBc237bobA7ymRd0uxUDTJL6oNsgBvAyox0cM:SDIULFMAAiu6JL6oNsgFAyox0cM

Malware Config

Extracted

Family

purecrypter

C2

https://store2.gofile.io/download/c1c50e23-f9b6-4ac2-8371-95dfa4c7dae8/Syumykmcoyegsimtkeftesyb.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\737732b33bdfa729010c81fba507c59e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\737732b33bdfa729010c81fba507c59e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3272
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3272 -s 1776
      2⤵
      • Program crash
      PID:4920
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3272 -ip 3272
    1⤵
      PID:3748

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3272-0-0x0000000000840000-0x0000000000858000-memory.dmp

      Filesize

      96KB

    • memory/3272-1-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/3272-2-0x0000000005260000-0x0000000005270000-memory.dmp

      Filesize

      64KB

    • memory/3272-3-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/3272-4-0x0000000005260000-0x0000000005270000-memory.dmp

      Filesize

      64KB

    • memory/3272-5-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB