Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-09-2024 23:42

General

  • Target

    d3121d321acbf7b44d80580e7ae02930_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    d3121d321acbf7b44d80580e7ae02930

  • SHA1

    36551efd55f4964d01d3a56d859e2ac0e022c9ea

  • SHA256

    e58007e757967bfeecd78e6c80e38a167c699636cf03c9e1f58ae3fbd06e038d

  • SHA512

    05f097b2c128748c1f5fd956eba1916d145a8b6987182c5c176026ad614e4477803cb29251565e9fcf4934a58d232564879b6aca97cc28ce9fa2cb2adb972a63

  • SSDEEP

    12288:T1bLgmluCtgQbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+DHeQYSUjEXFp:RbLgurgDdmMSirYbcMNgef0QeQjG

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (2060) amount of remote hosts 1 TTPs

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

  • Executes dropped EXE 2 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 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\d3121d321acbf7b44d80580e7ae02930_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3600
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\d3121d321acbf7b44d80580e7ae02930_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4968
      • C:\WINDOWS\mssecsvr.exe
        C:\WINDOWS\mssecsvr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:1076
  • C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe -m security
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:1512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvr.exe

    Filesize

    2.2MB

    MD5

    f85c6a33211750023b97bcc0321f25da

    SHA1

    f272dd9a0b16a3e49b54986c45e25c73ae9de2c6

    SHA256

    751fa045e68c1f42fca2d3b6dda2460135f692f0dbff6c74eb66096318504838

    SHA512

    b537c13e0424e3570010107d05bedded016117fae67cf7a9a9d775581fcff551e665cc19f45309cabb0532a927712ecd0bc9d073e49588e0d1a2f5206c123924