Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/08/2024, 07:44

General

  • Target

    a1b7377989cc363915ec2aab5de783bc_JaffaCakes118.exe

  • Size

    96KB

  • MD5

    a1b7377989cc363915ec2aab5de783bc

  • SHA1

    17e602f339268482f0698c625a28d101e264b87d

  • SHA256

    b4ef319bb5552ed848950e80359ee69b71ab0ea99209d5444bfc07b9ef1851ef

  • SHA512

    37e29c56cd02de3dda212e612c15e86ae1e083c4a8d943df75d405d5cc24afa726dab354c2553b4c532f3edf4430b7f3357ef941c8986a98e13799865b38a7fe

  • SSDEEP

    1536:fvcEg52p9tyVQO8P8ychvDewjj3RJNEo/knRzdnynE7RldNEP8lijOevNIjnZ/:f0E/pelychvDXzR3Ek65RldqvCnx

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 53 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\a1b7377989cc363915ec2aab5de783bc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a1b7377989cc363915ec2aab5de783bc_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:5000
    • C:\Users\Admin\siebuoc.exe
      "C:\Users\Admin\siebuoc.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:4872

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\siebuoc.exe

          Filesize

          96KB

          MD5

          e45af1febfc9bacbef1e81b7484b3614

          SHA1

          b0399295cfbff8f189574a301b5695a5b0bbee4c

          SHA256

          80c8185ca7a0b61d83ebefe89516045086655e95e9b6513505f986e408e6227e

          SHA512

          eb3aaf6ff2d304edfafd93307b335cc84e27da5fca61c1b6aff6d1e8f69c525a5d723a812896c7c6f7535e2f87b2a2ba6464e9a42662e9db83c72d1576aa5031