Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    15-09-2024 06:36

General

  • Target

    e1e708bd666f6645a561f6b57f1c3e50_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    e1e708bd666f6645a561f6b57f1c3e50

  • SHA1

    7e1ff837005680d0bb333bd9124d2369bb2d2bec

  • SHA256

    40bd526a2b04656e8d9e3c514fecf6eda25378f16fd292c37d2fdec7afb5fc57

  • SHA512

    d62bac87c5d76ec40dea2d4fb2607cf3998d752e48a14fcf2c849e402a5f0705b8cade492dd29f61622e6830c4e1ea6d389525db4c44ccfe51cb2fffacff6566

  • SSDEEP

    24576:RbLguriILMSirYbcMNgef0QeQjGdD8kIIz6626M+vbOSSqTPVXmiHkQg:RnRMSPbcBVQejdqx+TSqTdX1HkQ

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3228) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 2 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows 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.

  • Modifies data under HKEY_USERS 24 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1e708bd666f6645a561f6b57f1c3e50_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1e708bd666f6645a561f6b57f1c3e50_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\WINDOWS\mssecsvr.exe
        C:\WINDOWS\mssecsvr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2432
  • C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:1808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvr.exe

    Filesize

    2.2MB

    MD5

    727ff6eeea5b7143c6b592a20584c19c

    SHA1

    06fc59f43e59f1ee76b86725d419cf69ec417e87

    SHA256

    bc4bb82cd30d1e4d58284e16a3854defaffe39d5ee4fe130f9ae4ab2c670fa8b

    SHA512

    d4416369d3eb8747a6c370a7153813e17985911f2347296bc85a08d3dddfb7a725e06b45bc54dd70a64560812162fa41f9d27c0ee85bc71bdc6e7c820aae5cc7