Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2024 04:55

General

  • Target

    cb6522c54e75460642502cdea443635c_JaffaCakes118.exe

  • Size

    35KB

  • MD5

    cb6522c54e75460642502cdea443635c

  • SHA1

    3a14bbc52144e155d246c3e279b4b993fd483b5d

  • SHA256

    58223934638d3e88fc8740a0f509c24191b797b32f5e41b152a3b26ede01fe81

  • SHA512

    e1175ef3c681ab56973e11aa4d7e58e8dda4d9f5c0fdeeb35c6955831fd7531bcaaf3e3518384aa2f8e3a76258a7a40b41180b1035234664e4b6d76ae22c4fca

  • SSDEEP

    384:0J0xMfa7ElEnmBAET2p5iomkoLv/W/5Lt5HU1KU+GBWpAKfjpfAVLK6j4DJd/Sik:GhqnXQCpH0t2pf4LKPJZSidGsxmE+

Malware Config

Extracted

Family

purecrypter

C2

https://store2.gofile.io/download/fec978ee-1a49-4a43-954d-7da6379cd77a/Kylxeagwjyigaxcymqrxc.dll

Signatures

  • PureCrypter

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

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb6522c54e75460642502cdea443635c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\cb6522c54e75460642502cdea443635c_JaffaCakes118.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 1568
      2⤵
      • Program crash
      PID:2580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2252-0-0x0000000000890000-0x00000000008A0000-memory.dmp

    Filesize

    64KB

  • memory/2252-1-0x0000000073E10000-0x00000000744FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2252-2-0x00000000050C0000-0x0000000005100000-memory.dmp

    Filesize

    256KB

  • memory/2252-3-0x0000000073E10000-0x00000000744FE000-memory.dmp

    Filesize

    6.9MB