Analysis

  • max time kernel
    140s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2024, 18:33

General

  • Target
    a379c16f2858be2cefdc91878c3d8b8e_JaffaCakes118.exe
  • Size 28KB
  • Sample240403-w7behahd83
  • SHA256 4aae795faf59f3a25492cd7799c434f6183f4cbb476a51a5e4df766570a2c13c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a379c16f2858be2cefdc91878c3d8b8e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a379c16f2858be2cefdc91878c3d8b8e_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:3020

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        EazS9fthEXohdQn.exe

        • Path C:\Users\Admin\AppData\Local\Temp\EazS9fthEXohdQn.exe
        • Size 289B
        • SHA256 32006b6d177998be9aee1b81062d77413c20307aa8979eef3024fed4ef674a40
        • MD5 SHA1 SHA512

        CTS.exe

        • Path C:\Windows\CTS.exe
        • Size 28KB
        • SHA256 b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118
        • MD5 SHA1 SHA512 SSDEEP

        memory/2924-1-0x0000000000890000-0x00000000008A7000-memory.dmp

        memory/2924-8-0x0000000000890000-0x00000000008A7000-memory.dmp

        memory/2924-11-0x00000000000E0000-0x00000000000F7000-memory.dmp

        memory/2924-18-0x00000000000E0000-0x00000000000F7000-memory.dmp

        memory/3020-12-0x0000000000160000-0x0000000000177000-memory.dmp