Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 03:02

General

  • Target

    8157b685c864ed653938a86a18c61aeb_JaffaCakes118.exe

  • Size

    106KB

  • MD5

    8157b685c864ed653938a86a18c61aeb

  • SHA1

    c8de3b88ba1c2cdcfce054b2a18f08dbc61d4753

  • SHA256

    b58b79e854bc26f935d23d1d665021c1551be54ef1af660a8d4c37ef4111aec3

  • SHA512

    a23e173881051ded42aea6353dc8a555c774a88750c9b9599b91e49c9a19d34f670eacbf160612ade2375b5eb5efa21102f3d60bd02fb05c787f81afa72ec3d1

  • SSDEEP

    3072:gkWMvzjIc4Cw0BkxofyHckq6VqVMe7ws/Y:gyvzjIcukvyHZqlb5Y

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in System32 directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8157b685c864ed653938a86a18c61aeb_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8157b685c864ed653938a86a18c61aeb_JaffaCakes118.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\8157B6~1.EXE > nul
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4152
  • C:\Windows\SysWOW64\kcuyyg.exe
    C:\Windows\SysWOW64\kcuyyg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    PID:4324

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Windows\SysWOW64\kcuyyg.exe

          Filesize

          106KB

          MD5

          8157b685c864ed653938a86a18c61aeb

          SHA1

          c8de3b88ba1c2cdcfce054b2a18f08dbc61d4753

          SHA256

          b58b79e854bc26f935d23d1d665021c1551be54ef1af660a8d4c37ef4111aec3

          SHA512

          a23e173881051ded42aea6353dc8a555c774a88750c9b9599b91e49c9a19d34f670eacbf160612ade2375b5eb5efa21102f3d60bd02fb05c787f81afa72ec3d1