Analysis

  • max time kernel
    142s
  • max time network
    147s
  • 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 03:38

General

  • Target

    66adac15ffbd3e032f0587c33008376c_JaffaCakes118.exe

  • Size

    63KB

  • MD5

    66adac15ffbd3e032f0587c33008376c

  • SHA1

    ccdfc0b45ff4c9ccdcbbdf5a9e67420e1c75c215

  • SHA256

    9eea9caa338a673c1d88240839b08fe021ff9264620e7935ba5cb5bd3d00ebf6

  • SHA512

    5f8ec34caa6f7deb99e666bfc505faeb56fd79d202526f3b08e427d08aee046bb82ac9eb3f02368567007dbbe15c8d08d332ab8b9b2c8c22d824ff0e72038502

  • SSDEEP

    768:NiwhyOVDeJvHQ5H2YScYeFevyJrkcvPhOS4/Vi3xnehErtX+GsM1:NJhTVmGHJScYe+QzPhOvVihneW9+g

Malware Config

Extracted

Family

purecrypter

C2

https://store2.gofile.io/download/96b952fb-8e27-40a6-843c-fed6f2b108c2/Eqseirepfpkzxmnjhetxw.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\66adac15ffbd3e032f0587c33008376c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\66adac15ffbd3e032f0587c33008376c_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4984
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 1788
      2⤵
      • Program crash
      PID:3992
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4984 -ip 4984
    1⤵
      PID:2960
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:4492

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4984-0-0x0000000074E40000-0x00000000755F0000-memory.dmp

        Filesize

        7.7MB

      • memory/4984-1-0x00000000004F0000-0x0000000000506000-memory.dmp

        Filesize

        88KB

      • memory/4984-2-0x0000000074E40000-0x00000000755F0000-memory.dmp

        Filesize

        7.7MB

      • memory/4984-3-0x00000000051A0000-0x00000000051B0000-memory.dmp

        Filesize

        64KB

      • memory/4984-4-0x0000000074E40000-0x00000000755F0000-memory.dmp

        Filesize

        7.7MB