Analysis

  • max time kernel
    149s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-09-2024 22:31

General

  • Target

    fb0552be6e0d8669693a70e63fdcbbd1_JaffaCakes118.exe

  • Size

    152KB

  • MD5

    fb0552be6e0d8669693a70e63fdcbbd1

  • SHA1

    f9f820cb6440767ad025818265cb8a5fcbf6a787

  • SHA256

    13931bf44a61ce53fec5b23a1aa1684fae00c89e6f3a49ecb5cee165f016e596

  • SHA512

    2fd44db8d52d20fd8b8582830cae2ca2607123719c1d5fb0f5c09f32724d6bf7f47fe414a4ee8f5bf2a2206640baa1c536d2c5cb83ae82e4d64ed77d4fd2e6b6

  • SSDEEP

    3072:eMGzPYYh0Zn+7DxNUbaxIcz93bOButK+u3:x+7DxVh3bH4

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 52 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb0552be6e0d8669693a70e63fdcbbd1_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fb0552be6e0d8669693a70e63fdcbbd1_JaffaCakes118.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\kuiuju.exe
      "C:\Users\Admin\kuiuju.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2924

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\kuiuju.exe

    Filesize

    152KB

    MD5

    b838a705b113e612bc6992bc469e38f7

    SHA1

    4853272ca492517b4a1f7b579004c5b0eb4c6eef

    SHA256

    c8da44e408c26c4ff99b6990555903fb465aab40bd650fbd3e2fc59558ba43ee

    SHA512

    4c41e5a831ea1867b59372e5889d26756ec9c5d78f7f69e06d04c49394e58fcdab714b47fe51de7b2c11b7992c041c8990c550af4f1124d466be65c0d2a60bb9