Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-09-2024 11:05

General

  • Target

    de3c1185b81639f42fa0dce3064d14b9_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    de3c1185b81639f42fa0dce3064d14b9

  • SHA1

    a246a3caab7b98c8fa95c81f42a299207885da6a

  • SHA256

    3ac96c4b9ae78707b2a3b7a47a08c62380b73ddec9a2e3633be582d0e5690456

  • SHA512

    5ec5097bfd6e4e229ddd25701373cf3e325b3dc4eef2f1d84e8074af144e4a08741fff12605b6eb4efe901d857db4f0a8d6d871d7015eaab6a1ad4f21c58242c

  • SSDEEP

    49152:SnAQqMSPbcBVQejvRdhQaEau3R8yAH1plAH:+DqPoBh1dhM3R8yAVp2H

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3356) amount of remote hosts 1 TTPs

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

  • Executes dropped EXE 3 IoCs
  • Creates a large amount of network flows 1 TTPs

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

  • 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\de3c1185b81639f42fa0dce3064d14b9_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1456
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\de3c1185b81639f42fa0dce3064d14b9_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1880
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:428
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:1860
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:3956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    5f04396b3f971bdf68ec3c9f2f4d060d

    SHA1

    aadaee281798b73d5890e42d7cc1b9cbb686aef5

    SHA256

    24cde198171c771bc7e90a0ad7602a4ef6e2da78499c91c4effaed8bebdb5ca9

    SHA512

    c8ae07e033cb1a1b089eec08db9ea6b85cd1e9442f060722d3e01f6094962cb7a952d7200e2744ebc87732e28429d4dca0bd15cf6356e9f8442cc448035126d3

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    310f6ee5b793d17555aecb000ae6ec43

    SHA1

    45cfb924b2e25f5081044924576f95466522ba9c

    SHA256

    8c210b091511746ef357a18a2dd24f189defe5b30ad69a273a74e3e5e0ff217c

    SHA512

    cf3350f1917ad8c500d2edc0ba9d72438a11c096c05c63727890c1e4120b4c3cb1551fc82abf9ab420ac95f2ad5baf587d7520d40533f133ee721321715eb3f6